I'm trying to figure out how to detect the type of credit card based purely on its number. Does anyone know of a definitive, reliable way to find this?
This question is related to
algorithm
language-agnostic
e-commerce
The first numbers of the credit card can be used to approximate the vendor:
In swift you can create an enum to detect the credit card type.
enum CreditCardType: Int { // Enum which encapsulates different card types and method to find the type of card.
case Visa
case Master
case Amex
case Discover
func validationRegex() -> String {
var regex = ""
switch self {
case .Visa:
regex = "^4[0-9]{6,}$"
case .Master:
regex = "^5[1-5][0-9]{5,}$"
case .Amex:
regex = "^3[47][0-9]{13}$"
case .Discover:
regex = "^6(?:011|5[0-9]{2})[0-9]{12}$"
}
return regex
}
func validate(cardNumber: String) -> Bool {
let predicate = NSPredicate(format: "SELF MATCHES %@", validationRegex())
return predicate.evaluateWithObject(cardNumber)
}
// Method returns the credit card type for given card number
static func cardTypeForCreditCardNumber(cardNumber: String) -> CreditCardType? {
var creditCardType: CreditCardType?
var index = 0
while let cardType = CreditCardType(rawValue: index) {
if cardType.validate(cardNumber) {
creditCardType = cardType
break
} else {
index++
}
}
return creditCardType
}
}
Call the method CreditCardType.cardTypeForCreditCardNumber("#card number") which returns CreditCardType enum value.
Check this out:
http://www.breakingpar.com/bkp/home.nsf/0/87256B280015193F87256CC70060A01B
function isValidCreditCard(type, ccnum) {
/* Visa: length 16, prefix 4, dashes optional.
Mastercard: length 16, prefix 51-55, dashes optional.
Discover: length 16, prefix 6011, dashes optional.
American Express: length 15, prefix 34 or 37.
Diners: length 14, prefix 30, 36, or 38. */
var re = new Regex({
"visa": "/^4\d{3}-?\d{4}-?\d{4}-?\d",
"mc": "/^5[1-5]\d{2}-?\d{4}-?\d{4}-?\d{4}$/",
"disc": "/^6011-?\d{4}-?\d{4}-?\d{4}$/",
"amex": "/^3[47]\d{13}$/",
"diners": "/^3[068]\d{12}$/"
}[type.toLowerCase()])
if (!re.test(ccnum)) return false;
// Remove all dashes for the checksum checks to eliminate negative numbers
ccnum = ccnum.split("-").join("");
// Checksum ("Mod 10")
// Add even digits in even length strings or odd digits in odd length strings.
var checksum = 0;
for (var i = (2 - (ccnum.length % 2)); i <= ccnum.length; i += 2) {
checksum += parseInt(ccnum.charAt(i - 1));
}
// Analyze odd digits in even length strings or even digits in odd length strings.
for (var i = (ccnum.length % 2) + 1; i < ccnum.length; i += 2) {
var digit = parseInt(ccnum.charAt(i - 1)) * 2;
if (digit < 10) { checksum += digit; } else { checksum += (digit - 9); }
}
if ((checksum % 10) == 0) return true;
else return false;
}
The first numbers of the credit card can be used to approximate the vendor:
Swift 5+
extension String {
func isMatch(_ Regex: String) -> Bool {
do {
let regex = try NSRegularExpression(pattern: Regex)
let results = regex.matches(in: self, range: NSRange(self.startIndex..., in: self))
return results.map {
String(self[Range($0.range, in: self)!])
}.count > 0
} catch {
return false
}
}
func getCreditCardType() -> String? {
let VISA_Regex = "^4[0-9]{6,}$"
let MasterCard_Regex = "^5[1-5][0-9]{5,}|222[1-9][0-9]{3,}|22[3-9][0-9]{4,}|2[3-6][0-9]{5,}|27[01][0-9]{4,}|2720[0-9]{3,}$"
let AmericanExpress_Regex = "^3[47][0-9]{5,}$"
let DinersClub_Regex = "^3(?:0[0-5]|[68][0-9])[0-9]{4,}$"
let Discover_Regex = "^6(?:011|5[0-9]{2})[0-9]{3,}$"
let JCB_Regex = "^(?:2131|1800|35[0-9]{3})[0-9]{3,}$"
if self.isMatch(VISA_Regex) {
return "VISA"
} else if self.isMatch(MasterCard_Regex) {
return "MasterCard"
} else if self.isMatch(AmericanExpress_Regex) {
return "AmericanExpress"
} else if self.isMatch(DinersClub_Regex) {
return "DinersClub"
} else if self.isMatch(Discover_Regex) {
return "Discover"
} else if self.isMatch(JCB_Regex) {
return "JCB"
} else {
return nil
}
}
}
Use.
"1234123412341234".getCreditCardType()
Here is an example of some boolean functions written in Python that return True if the card is detected as per the function name.
def is_american_express(cc_number):
"""Checks if the card is an american express. If us billing address country code, & is_amex, use vpos
https://en.wikipedia.org/wiki/Bank_card_number#cite_note-GenCardFeatures-3
:param cc_number: unicode card number
"""
return bool(re.match(r'^3[47][0-9]{13}$', cc_number))
def is_visa(cc_number):
"""Checks if the card is a visa, begins with 4 and 12 or 15 additional digits.
:param cc_number: unicode card number
"""
# Standard Visa is 13 or 16, debit can be 19
if bool(re.match(r'^4', cc_number)) and len(cc_number) in [13, 16, 19]:
return True
return False
def is_mastercard(cc_number):
"""Checks if the card is a mastercard. Begins with 51-55 or 2221-2720 and 16 in length.
:param cc_number: unicode card number
"""
if len(cc_number) == 16 and cc_number.isdigit(): # Check digit, before cast to int
return bool(re.match(r'^5[1-5]', cc_number)) or int(cc_number[:4]) in range(2221, 2721)
return False
def is_discover(cc_number):
"""Checks if the card is discover, re would be too hard to maintain. Not a supported card.
:param cc_number: unicode card number
"""
if len(cc_number) == 16:
try:
# return bool(cc_number[:4] == '6011' or cc_number[:2] == '65' or cc_number[:6] in range(622126, 622926))
return bool(cc_number[:4] == '6011' or cc_number[:2] == '65' or 622126 <= int(cc_number[:6]) <= 622925)
except ValueError:
return False
return False
def is_jcb(cc_number):
"""Checks if the card is a jcb. Not a supported card.
:param cc_number: unicode card number
"""
# return bool(re.match(r'^(?:2131|1800|35\d{3})\d{11}$', cc_number)) # wikipedia
return bool(re.match(r'^35(2[89]|[3-8][0-9])[0-9]{12}$', cc_number)) # PawelDecowski
def is_diners_club(cc_number):
"""Checks if the card is a diners club. Not a supported card.
:param cc_number: unicode card number
"""
return bool(re.match(r'^3(?:0[0-6]|[68][0-9])[0-9]{11}$', cc_number)) # 0-5 = carte blance, 6 = international
def is_laser(cc_number):
"""Checks if the card is laser. Not a supported card.
:param cc_number: unicode card number
"""
return bool(re.match(r'^(6304|670[69]|6771)', cc_number))
def is_maestro(cc_number):
"""Checks if the card is maestro. Not a supported card.
:param cc_number: unicode card number
"""
possible_lengths = [12, 13, 14, 15, 16, 17, 18, 19]
return bool(re.match(r'^(50|5[6-9]|6[0-9])', cc_number)) and len(cc_number) in possible_lengths
# Child cards
def is_visa_electron(cc_number):
"""Child of visa. Checks if the card is a visa electron. Not a supported card.
:param cc_number: unicode card number
"""
return bool(re.match(r'^(4026|417500|4508|4844|491(3|7))', cc_number)) and len(cc_number) == 16
def is_total_rewards_visa(cc_number):
"""Child of visa. Checks if the card is a Total Rewards Visa. Not a supported card.
:param cc_number: unicode card number
"""
return bool(re.match(r'^41277777[0-9]{8}$', cc_number))
def is_diners_club_carte_blanche(cc_number):
"""Child card of diners. Checks if the card is a diners club carte blance. Not a supported card.
:param cc_number: unicode card number
"""
return bool(re.match(r'^30[0-5][0-9]{11}$', cc_number)) # github PawelDecowski, jquery-creditcardvalidator
def is_diners_club_carte_international(cc_number):
"""Child card of diners. Checks if the card is a diners club international. Not a supported card.
:param cc_number: unicode card number
"""
return bool(re.match(r'^36[0-9]{12}$', cc_number)) # jquery-creditcardvalidator
In Card Range Recognition (CRR), a drawback with algorithms that use a series of regex or other hard-coded ranges, is that the BINs/IINs do change over time in my experience. The co-branding of cards is an ongoing complication. Different Card Acquirers / merchants may need you treat the same card differently, depending on e.g. geolocation.
Additionally, in the last few years with e.g. UnionPay cards in wider circulation, existing models do not cope with new ranges that sometimes interleave with broader ranges that they supersede.
Knowing the geography your system needs to cover may help, as some ranges are restricted to use in particular countries. For example, ranges 62 include some AAA sub-ranges in the US, but if your merchant base is outside the US, you may be able to treat all 62 as UnionPay.
You may be also asked to treat a card differently based on merchant location. E.g. to treat certain UK cards as debit domestically, but as credit internationally.
There are very useful set of rules maintained by one major Acquiring Bank. E.g. https://www.barclaycard.co.uk/business/files/BIN-Rules-EIRE.pdf and https://www.barclaycard.co.uk/business/files/BIN-Rules-UK.pdf. (Valid links as of June 2017, thanks to the user who provided a link to updated reference.) But be aware of the caveat that, while these CRR rules may represent the Card Issuing universe as it applies to the merchants acquired by that entity, it does not include e.g. ranges identified as CUP/UPI.
These comments apply to magnetic stripe (MagStripe) or PKE (Pan Key Entry) scenarios. The situation is different again in the ICC/EMV world.
Update: Other answers on this page (and also the linked WikiPedia page) have JCB as always 16 long. However, in my company we have a dedicated team of engineers who certify our POS devices and software across multiple acquiring banks and geographies. The most recent Certification Pack of cards this team have from JCB, had a pass case for a 19 long PAN.
My solution with jQuery:
function detectCreditCardType() {
var type = new Array;
type[1] = '^4[0-9]{12}(?:[0-9]{3})?$'; // visa
type[2] = '^5[1-5][0-9]{14}$'; // mastercard
type[3] = '^6(?:011|5[0-9]{2})[0-9]{12}$'; // discover
type[4] = '^3[47][0-9]{13}$'; // amex
var ccnum = $('.creditcard').val().replace(/[^\d.]/g, '');
var returntype = 0;
$.each(type, function(idx, re) {
var regex = new RegExp(re);
if(regex.test(ccnum) && idx>0) {
returntype = idx;
}
});
return returntype;
}
In case 0 is returned, credit card type is undetected.
"creditcard" class should be added to the credit card input field.
Swift 5+
extension String {
func isMatch(_ Regex: String) -> Bool {
do {
let regex = try NSRegularExpression(pattern: Regex)
let results = regex.matches(in: self, range: NSRange(self.startIndex..., in: self))
return results.map {
String(self[Range($0.range, in: self)!])
}.count > 0
} catch {
return false
}
}
func getCreditCardType() -> String? {
let VISA_Regex = "^4[0-9]{6,}$"
let MasterCard_Regex = "^5[1-5][0-9]{5,}|222[1-9][0-9]{3,}|22[3-9][0-9]{4,}|2[3-6][0-9]{5,}|27[01][0-9]{4,}|2720[0-9]{3,}$"
let AmericanExpress_Regex = "^3[47][0-9]{5,}$"
let DinersClub_Regex = "^3(?:0[0-5]|[68][0-9])[0-9]{4,}$"
let Discover_Regex = "^6(?:011|5[0-9]{2})[0-9]{3,}$"
let JCB_Regex = "^(?:2131|1800|35[0-9]{3})[0-9]{3,}$"
if self.isMatch(VISA_Regex) {
return "VISA"
} else if self.isMatch(MasterCard_Regex) {
return "MasterCard"
} else if self.isMatch(AmericanExpress_Regex) {
return "AmericanExpress"
} else if self.isMatch(DinersClub_Regex) {
return "DinersClub"
} else if self.isMatch(Discover_Regex) {
return "Discover"
} else if self.isMatch(JCB_Regex) {
return "JCB"
} else {
return nil
}
}
}
Use.
"1234123412341234".getCreditCardType()
I use https://github.com/bendrucker/creditcards-types/ to detect the credit card type from number. One issue I ran into is discover test number 6011 1111 1111 1117
from https://www.cybersource.com/developers/other_resources/quick_references/test_cc_numbers/ we can see it is a discover number because it starts by 6011. But the result I get from the creditcards-types is "Maestro". I opened the issue to the author. He replied me very soon and provide this pdf doc https://www.discovernetwork.com/downloads/IPP_VAR_Compliance.pdf From the doc we can see clearly that 6011 1111 1111 1117 does not fall into the range of discover credit card.
The regular expression rules that match the respective card vendors:
(4\d{12}(?:\d{3})?) for VISA.(5[1-5]\d{14}) for MasterCard.(3[47]\d{13}) for AMEX.((?:5020|5038|6304|6579|6761)\d{12}(?:\d\d)?) for Maestro.(3(?:0[0-5]|[68][0-9])[0-9]{11}) for Diners Club.(6(?:011|5[0-9]{2})[0-9]{12}) for Discover.(35[2-8][89]\d\d\d{10}) for JCB.Swift 2.1 Version of Usman Y's answer. Use a print statement to verify so call by some string value
print(self.validateCardType(self.creditCardField.text!))
func validateCardType(testCard: String) -> String {
let regVisa = "^4[0-9]{12}(?:[0-9]{3})?$"
let regMaster = "^5[1-5][0-9]{14}$"
let regExpress = "^3[47][0-9]{13}$"
let regDiners = "^3(?:0[0-5]|[68][0-9])[0-9]{11}$"
let regDiscover = "^6(?:011|5[0-9]{2})[0-9]{12}$"
let regJCB = "^(?:2131|1800|35\\d{3})\\d{11}$"
let regVisaTest = NSPredicate(format: "SELF MATCHES %@", regVisa)
let regMasterTest = NSPredicate(format: "SELF MATCHES %@", regMaster)
let regExpressTest = NSPredicate(format: "SELF MATCHES %@", regExpress)
let regDinersTest = NSPredicate(format: "SELF MATCHES %@", regDiners)
let regDiscoverTest = NSPredicate(format: "SELF MATCHES %@", regDiscover)
let regJCBTest = NSPredicate(format: "SELF MATCHES %@", regJCB)
if regVisaTest.evaluateWithObject(testCard){
return "Visa"
}
else if regMasterTest.evaluateWithObject(testCard){
return "MasterCard"
}
else if regExpressTest.evaluateWithObject(testCard){
return "American Express"
}
else if regDinersTest.evaluateWithObject(testCard){
return "Diners Club"
}
else if regDiscoverTest.evaluateWithObject(testCard){
return "Discover"
}
else if regJCBTest.evaluateWithObject(testCard){
return "JCB"
}
return ""
}
In javascript:
function detectCardType(number) {
var re = {
electron: /^(4026|417500|4405|4508|4844|4913|4917)\d+$/,
maestro: /^(5018|5020|5038|5612|5893|6304|6759|6761|6762|6763|0604|6390)\d+$/,
dankort: /^(5019)\d+$/,
interpayment: /^(636)\d+$/,
unionpay: /^(62|88)\d+$/,
visa: /^4[0-9]{12}(?:[0-9]{3})?$/,
mastercard: /^5[1-5][0-9]{14}$/,
amex: /^3[47][0-9]{13}$/,
diners: /^3(?:0[0-5]|[68][0-9])[0-9]{11}$/,
discover: /^6(?:011|5[0-9]{2})[0-9]{12}$/,
jcb: /^(?:2131|1800|35\d{3})\d{11}$/
}
for(var key in re) {
if(re[key].test(number)) {
return key
}
}
}
Unit test:
describe('CreditCard', function() {
describe('#detectCardType', function() {
var cards = {
'8800000000000000': 'UNIONPAY',
'4026000000000000': 'ELECTRON',
'4175000000000000': 'ELECTRON',
'4405000000000000': 'ELECTRON',
'4508000000000000': 'ELECTRON',
'4844000000000000': 'ELECTRON',
'4913000000000000': 'ELECTRON',
'4917000000000000': 'ELECTRON',
'5019000000000000': 'DANKORT',
'5018000000000000': 'MAESTRO',
'5020000000000000': 'MAESTRO',
'5038000000000000': 'MAESTRO',
'5612000000000000': 'MAESTRO',
'5893000000000000': 'MAESTRO',
'6304000000000000': 'MAESTRO',
'6759000000000000': 'MAESTRO',
'6761000000000000': 'MAESTRO',
'6762000000000000': 'MAESTRO',
'6763000000000000': 'MAESTRO',
'0604000000000000': 'MAESTRO',
'6390000000000000': 'MAESTRO',
'3528000000000000': 'JCB',
'3589000000000000': 'JCB',
'3529000000000000': 'JCB',
'6360000000000000': 'INTERPAYMENT',
'4916338506082832': 'VISA',
'4556015886206505': 'VISA',
'4539048040151731': 'VISA',
'4024007198964305': 'VISA',
'4716175187624512': 'VISA',
'5280934283171080': 'MASTERCARD',
'5456060454627409': 'MASTERCARD',
'5331113404316994': 'MASTERCARD',
'5259474113320034': 'MASTERCARD',
'5442179619690834': 'MASTERCARD',
'6011894492395579': 'DISCOVER',
'6011388644154687': 'DISCOVER',
'6011880085013612': 'DISCOVER',
'6011652795433988': 'DISCOVER',
'6011375973328347': 'DISCOVER',
'345936346788903': 'AMEX',
'377669501013152': 'AMEX',
'373083634595479': 'AMEX',
'370710819865268': 'AMEX',
'371095063560404': 'AMEX'
};
Object.keys(cards).forEach(function(number) {
it('should detect card ' + number + ' as ' + cards[number], function() {
Basket.detectCardType(number).should.equal(cards[number]);
});
});
});
});
I searched around quite a bit for credit card formatting and phone number formatting. Found lots of good tips but nothing really suited my exact desires so I created this bit of code. You use it like this:
var sf = smartForm.formatCC(myInputString);
var cardType = sf.cardType;
Anatoliy's answer in PHP:
public static function detectCardType($num)
{
$re = array(
"visa" => "/^4[0-9]{12}(?:[0-9]{3})?$/",
"mastercard" => "/^5[1-5][0-9]{14}$/",
"amex" => "/^3[47][0-9]{13}$/",
"discover" => "/^6(?:011|5[0-9]{2})[0-9]{12}$/",
);
if (preg_match($re['visa'],$num))
{
return 'visa';
}
else if (preg_match($re['mastercard'],$num))
{
return 'mastercard';
}
else if (preg_match($re['amex'],$num))
{
return 'amex';
}
else if (preg_match($re['discover'],$num))
{
return 'discover';
}
else
{
return false;
}
}
The first numbers of the credit card can be used to approximate the vendor:
Stripe has provided this fantastic javascript library for card scheme detection. Let me add few code snippets and show you how to use it.
Firstly Include it to your web page as
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery.payment/1.2.3/jquery.payment.js " ></script>
Secondly use the function cardType for detecting the card scheme.
$(document).ready(function() {
var type = $.payment.cardType("4242 4242 4242 4242"); //test card number
console.log(type);
});
Here are the reference links for more examples and demos.
Compact javascript version
var getCardType = function (number) {
var cards = {
visa: /^4[0-9]{12}(?:[0-9]{3})?$/,
mastercard: /^5[1-5][0-9]{14}$/,
amex: /^3[47][0-9]{13}$/,
diners: /^3(?:0[0-5]|[68][0-9])[0-9]{11}$/,
discover: /^6(?:011|5[0-9]{2})[0-9]{12}$/,
jcb: /^(?:2131|1800|35\d{3})\d{11}$/
};
for (var card in cards) {
if (cards[card].test(number)) {
return card;
}
}
};
Here's Complete C# or VB code for all kinds of CC related things on codeproject.
This article has been up for a couple years with no negative comments.
recently I needed such functionality, I was porting Zend Framework Credit Card Validator to ruby. ruby gem: https://github.com/Fivell/credit_card_validations zend framework: https://github.com/zendframework/zf2/blob/master/library/Zend/Validator/CreditCard.php
They both use INN ranges for detecting type. Here you can read about INN
According to this you can detect credit card alternatively (without regexps,but declaring some rules about prefixes and possible length)
So we have next rules for most used cards
######## most used brands #########
visa: [
{length: [13, 16], prefixes: ['4']}
],
mastercard: [
{length: [16], prefixes: ['51', '52', '53', '54', '55']}
],
amex: [
{length: [15], prefixes: ['34', '37']}
],
######## other brands ########
diners: [
{length: [14], prefixes: ['300', '301', '302', '303', '304', '305', '36', '38']},
],
#There are Diners Club (North America) cards that begin with 5. These are a joint venture between Diners Club and MasterCard, and are processed like a MasterCard
# will be removed in next major version
diners_us: [
{length: [16], prefixes: ['54', '55']}
],
discover: [
{length: [16], prefixes: ['6011', '644', '645', '646', '647', '648',
'649', '65']}
],
jcb: [
{length: [16], prefixes: ['3528', '3529', '353', '354', '355', '356', '357', '358', '1800', '2131']}
],
laser: [
{length: [16, 17, 18, 19], prefixes: ['6304', '6706', '6771']}
],
solo: [
{length: [16, 18, 19], prefixes: ['6334', '6767']}
],
switch: [
{length: [16, 18, 19], prefixes: ['633110', '633312', '633304', '633303', '633301', '633300']}
],
maestro: [
{length: [12, 13, 14, 15, 16, 17, 18, 19], prefixes: ['5010', '5011', '5012', '5013', '5014', '5015', '5016', '5017', '5018',
'502', '503', '504', '505', '506', '507', '508',
'6012', '6013', '6014', '6015', '6016', '6017', '6018', '6019',
'602', '603', '604', '605', '6060',
'677', '675', '674', '673', '672', '671', '670',
'6760', '6761', '6762', '6763', '6764', '6765', '6766', '6768', '6769']}
],
# Luhn validation are skipped for union pay cards because they have unknown generation algoritm
unionpay: [
{length: [16, 17, 18, 19], prefixes: ['622', '624', '625', '626', '628'], skip_luhn: true}
],
dankrot: [
{length: [16], prefixes: ['5019']}
],
rupay: [
{length: [16], prefixes: ['6061', '6062', '6063', '6064', '6065', '6066', '6067', '6068', '6069', '607', '608'], skip_luhn: true}
]
}
Then by searching prefix and comparing length you can detect credit card brand. Also don't forget about luhn algoritm (it is descibed here http://en.wikipedia.org/wiki/Luhn).
UPDATE
updated list of rules can be found here https://raw.githubusercontent.com/Fivell/credit_card_validations/master/lib/data/brands.yaml
function GetCreditCardBrand(CardNumber: string): string;
begin
if TRegEx.IsMatch(CardNumber,'^4[0-9]{12}(?:[0-9]{3})?$') then
Result := 'visa'
else if TRegEx.IsMatch(CardNumber,'^5[1-5][0-9]{14}$') then
Result := 'master'
else if TRegEx.IsMatch(CardNumber,'^3[47][0-9]{13}$') then
Result := 'express'
else if TRegEx.IsMatch(CardNumber,'^3(?:0[0-5]|[68][0-9])[0-9]{11}$') then
Result := 'diners'
else if TRegEx.IsMatch(CardNumber,'^6(?:011|5[0-9]{2})[0-9]{12}$') then
Result := 'discover'
else if TRegEx.IsMatch(CardNumber,'^(?:2131|1800|35\\d{3})\\d{11}$') then
Result := 'jcb'
end;
Here is the function to check Credit card type using Regex , delphi
In Card Range Recognition (CRR), a drawback with algorithms that use a series of regex or other hard-coded ranges, is that the BINs/IINs do change over time in my experience. The co-branding of cards is an ongoing complication. Different Card Acquirers / merchants may need you treat the same card differently, depending on e.g. geolocation.
Additionally, in the last few years with e.g. UnionPay cards in wider circulation, existing models do not cope with new ranges that sometimes interleave with broader ranges that they supersede.
Knowing the geography your system needs to cover may help, as some ranges are restricted to use in particular countries. For example, ranges 62 include some AAA sub-ranges in the US, but if your merchant base is outside the US, you may be able to treat all 62 as UnionPay.
You may be also asked to treat a card differently based on merchant location. E.g. to treat certain UK cards as debit domestically, but as credit internationally.
There are very useful set of rules maintained by one major Acquiring Bank. E.g. https://www.barclaycard.co.uk/business/files/BIN-Rules-EIRE.pdf and https://www.barclaycard.co.uk/business/files/BIN-Rules-UK.pdf. (Valid links as of June 2017, thanks to the user who provided a link to updated reference.) But be aware of the caveat that, while these CRR rules may represent the Card Issuing universe as it applies to the merchants acquired by that entity, it does not include e.g. ranges identified as CUP/UPI.
These comments apply to magnetic stripe (MagStripe) or PKE (Pan Key Entry) scenarios. The situation is different again in the ICC/EMV world.
Update: Other answers on this page (and also the linked WikiPedia page) have JCB as always 16 long. However, in my company we have a dedicated team of engineers who certify our POS devices and software across multiple acquiring banks and geographies. The most recent Certification Pack of cards this team have from JCB, had a pass case for a 19 long PAN.
I searched around quite a bit for credit card formatting and phone number formatting. Found lots of good tips but nothing really suited my exact desires so I created this bit of code. You use it like this:
var sf = smartForm.formatCC(myInputString);
var cardType = sf.cardType;
follow Luhn’s algorithm
private boolean validateCreditCardNumber(String str) {
int[] ints = new int[str.length()];
for (int i = 0; i < str.length(); i++) {
ints[i] = Integer.parseInt(str.substring(i, i + 1));
}
for (int i = ints.length - 2; i >= 0; i = i - 2) {
int j = ints[i];
j = j * 2;
if (j > 9) {
j = j % 10 + 1;
}
ints[i] = j;
}
int sum = 0;
for (int i = 0; i < ints.length; i++) {
sum += ints[i];
}
if (sum % 10 == 0) {
return true;
} else {
return false;
}
}
then call this method
Edittext mCreditCardNumberEt;
mCreditCardNumberEt.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
int cardcount= s.toString().length();
if(cardcount>=16) {
boolean cardnumbervalid= validateCreditCardNumber(s.toString());
if(cardnumbervalid) {
cardvalidtesting.setText("Valid Card");
cardvalidtesting.setTextColor(ContextCompat.getColor(context,R.color.green));
}
else {
cardvalidtesting.setText("Invalid Card");
cardvalidtesting.setTextColor(ContextCompat.getColor(context,R.color.red));
}
}
else if(cardcount>0 &&cardcount<16) {
cardvalidtesting.setText("Invalid Card");
cardvalidtesting.setTextColor(ContextCompat.getColor(context,R.color.red));
}
else {
cardvalidtesting.setText("");
}
}
@Override
public void afterTextChanged(Editable s) {
}
});
A javascript improve of @Anatoliy answer
function getCardType (number) {
const numberFormated = number.replace(/\D/g, '')
var patterns = {
VISA: /^4[0-9]{12}(?:[0-9]{3})?$/,
MASTER: /^5[1-5][0-9]{14}$/,
AMEX: /^3[47][0-9]{13}$/,
ELO: /^((((636368)|(438935)|(504175)|(451416)|(636297))\d{0,10})|((5067)|(4576)|(4011))\d{0,12})$/,
AURA: /^(5078\d{2})(\d{2})(\d{11})$/,
JCB: /^(?:2131|1800|35\d{3})\d{11}$/,
DINERS: /^3(?:0[0-5]|[68][0-9])[0-9]{11}$/,
DISCOVERY: /^6(?:011|5[0-9]{2})[0-9]{12}$/,
HIPERCARD: /^(606282\d{10}(\d{3})?)|(3841\d{15})$/,
ELECTRON: /^(4026|417500|4405|4508|4844|4913|4917)\d+$/,
MAESTRO: /^(5018|5020|5038|5612|5893|6304|6759|6761|6762|6763|0604|6390)\d+$/,
DANKORT: /^(5019)\d+$/,
INTERPAYMENT: /^(636)\d+$/,
UNIONPAY: /^(62|88)\d+$/,
}
for (var key in patterns) {
if (patterns[key].test(numberFormated)) {
return key
}
}
}
console.log(getCardType("4539 5684 7526 2091"))Stripe has provided this fantastic javascript library for card scheme detection. Let me add few code snippets and show you how to use it.
Firstly Include it to your web page as
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery.payment/1.2.3/jquery.payment.js " ></script>
Secondly use the function cardType for detecting the card scheme.
$(document).ready(function() {
var type = $.payment.cardType("4242 4242 4242 4242"); //test card number
console.log(type);
});
Here are the reference links for more examples and demos.
Try this.For swift.
func checkCardValidation(number : String) -> Bool
{
let reversedInts = number.characters.reversed().map { Int(String($0)) }
return reversedInts.enumerated().reduce(0, {(sum, val) in
let odd = val.offset % 2 == 1
return sum + (odd ? (val.element! == 9 ? 9 : (val.element! * 2) % 9) : val.element!)
}) % 10 == 0
}
Use.
if (self.checkCardValidation(number: "yourNumber") == true) {
print("Card Number valid")
}else{
print("Card Number not valid")
}
follow Luhn’s algorithm
private boolean validateCreditCardNumber(String str) {
int[] ints = new int[str.length()];
for (int i = 0; i < str.length(); i++) {
ints[i] = Integer.parseInt(str.substring(i, i + 1));
}
for (int i = ints.length - 2; i >= 0; i = i - 2) {
int j = ints[i];
j = j * 2;
if (j > 9) {
j = j % 10 + 1;
}
ints[i] = j;
}
int sum = 0;
for (int i = 0; i < ints.length; i++) {
sum += ints[i];
}
if (sum % 10 == 0) {
return true;
} else {
return false;
}
}
then call this method
Edittext mCreditCardNumberEt;
mCreditCardNumberEt.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
int cardcount= s.toString().length();
if(cardcount>=16) {
boolean cardnumbervalid= validateCreditCardNumber(s.toString());
if(cardnumbervalid) {
cardvalidtesting.setText("Valid Card");
cardvalidtesting.setTextColor(ContextCompat.getColor(context,R.color.green));
}
else {
cardvalidtesting.setText("Invalid Card");
cardvalidtesting.setTextColor(ContextCompat.getColor(context,R.color.red));
}
}
else if(cardcount>0 &&cardcount<16) {
cardvalidtesting.setText("Invalid Card");
cardvalidtesting.setTextColor(ContextCompat.getColor(context,R.color.red));
}
else {
cardvalidtesting.setText("");
}
}
@Override
public void afterTextChanged(Editable s) {
}
});
In swift you can create an enum to detect the credit card type.
enum CreditCardType: Int { // Enum which encapsulates different card types and method to find the type of card.
case Visa
case Master
case Amex
case Discover
func validationRegex() -> String {
var regex = ""
switch self {
case .Visa:
regex = "^4[0-9]{6,}$"
case .Master:
regex = "^5[1-5][0-9]{5,}$"
case .Amex:
regex = "^3[47][0-9]{13}$"
case .Discover:
regex = "^6(?:011|5[0-9]{2})[0-9]{12}$"
}
return regex
}
func validate(cardNumber: String) -> Bool {
let predicate = NSPredicate(format: "SELF MATCHES %@", validationRegex())
return predicate.evaluateWithObject(cardNumber)
}
// Method returns the credit card type for given card number
static func cardTypeForCreditCardNumber(cardNumber: String) -> CreditCardType? {
var creditCardType: CreditCardType?
var index = 0
while let cardType = CreditCardType(rawValue: index) {
if cardType.validate(cardNumber) {
creditCardType = cardType
break
} else {
index++
}
}
return creditCardType
}
}
Call the method CreditCardType.cardTypeForCreditCardNumber("#card number") which returns CreditCardType enum value.
// abobjects.com, parvez ahmad ab bulk mailer
use below script
function isValidCreditCard2(type, ccnum) {
if (type == "Visa") {
// Visa: length 16, prefix 4, dashes optional.
var re = /^4\d{3}?\d{4}?\d{4}?\d{4}$/;
} else if (type == "MasterCard") {
// Mastercard: length 16, prefix 51-55, dashes optional.
var re = /^5[1-5]\d{2}?\d{4}?\d{4}?\d{4}$/;
} else if (type == "Discover") {
// Discover: length 16, prefix 6011, dashes optional.
var re = /^6011?\d{4}?\d{4}?\d{4}$/;
} else if (type == "AmEx") {
// American Express: length 15, prefix 34 or 37.
var re = /^3[4,7]\d{13}$/;
} else if (type == "Diners") {
// Diners: length 14, prefix 30, 36, or 38.
var re = /^3[0,6,8]\d{12}$/;
}
if (!re.test(ccnum)) return false;
return true;
/*
// Remove all dashes for the checksum checks to eliminate negative numbers
ccnum = ccnum.split("-").join("");
// Checksum ("Mod 10")
// Add even digits in even length strings or odd digits in odd length strings.
var checksum = 0;
for (var i=(2-(ccnum.length % 2)); i<=ccnum.length; i+=2) {
checksum += parseInt(ccnum.charAt(i-1));
}
// Analyze odd digits in even length strings or even digits in odd length strings.
for (var i=(ccnum.length % 2) + 1; i<ccnum.length; i+=2) {
var digit = parseInt(ccnum.charAt(i-1)) * 2;
if (digit < 10) { checksum += digit; } else { checksum += (digit-9); }
}
if ((checksum % 10) == 0) return true; else return false;
*/
}
jQuery.validator.addMethod("isValidCreditCard", function(postalcode, element) {
return isValidCreditCard2($("#cardType").val(), $("#cardNum").val());
}, "<br>credit card is invalid");
Type</td>
<td class="text"> <form:select path="cardType" cssclass="fields" style="border: 1px solid #D5D5D5;padding: 0px 0px 0px 0px;width: 130px;height: 22px;">
<option value="SELECT">SELECT</option>
<option value="MasterCard">Mastercard</option>
<option value="Visa">Visa</option>
<option value="AmEx">American Express</option>
<option value="Discover">Discover</option>
</form:select> <font color="#FF0000">*</font>
$("#signupForm").validate({
rules:{
companyName:{required: true},
address1:{required: true},
city:{required: true},
state:{required: true},
zip:{required: true},
country:{required: true},
chkAgree:{required: true},
confPassword:{required: true},
lastName:{required: true},
firstName:{required: true},
ccAddress1:{required: true},
ccZip:{
postalcode : true
},
phone:{required: true},
email:{
required: true,
email: true
},
userName:{
required: true,
minlength: 6
},
password:{
required: true,
minlength: 6
},
cardNum:{
isValidCreditCard : true
},
Try this for kotlin. Add Regex and add to the when statement.
private fun getCardType(number: String): String {
val visa = Regex("^4[0-9]{12}(?:[0-9]{3})?$")
val mastercard = Regex("^5[1-5][0-9]{14}$")
val amx = Regex("^3[47][0-9]{13}$")
return when {
visa.matches(number) -> "Visa"
mastercard.matches(number) -> "Mastercard"
amx.matches(number) -> "American Express"
else -> "Unknown"
}
}
Updated: 15th June 2016 (as an ultimate solution currently)
Please note that I even give vote up for the one is top voted, but to make it clear these are the regexps actually works i tested it with thousands of real BIN codes. The most important is to use start strings (^) otherwise it will give false results in real world!
JCB ^(?:2131|1800|35)[0-9]{0,}$ Start with: 2131, 1800, 35 (3528-3589)
American Express ^3[47][0-9]{0,}$ Start with: 34, 37
Diners Club ^3(?:0[0-59]{1}|[689])[0-9]{0,}$ Start with: 300-305, 309, 36, 38-39
Visa ^4[0-9]{0,}$ Start with: 4
MasterCard ^(5[1-5]|222[1-9]|22[3-9]|2[3-6]|27[01]|2720)[0-9]{0,}$ Start with: 2221-2720, 51-55
Maestro ^(5[06789]|6)[0-9]{0,}$ Maestro always growing in the range: 60-69, started with / not something else, but starting 5 must be encoded as mastercard anyway. Maestro cards must be detected in the end of the code because some others has in the range of 60-69. Please look at the code.
Discover ^(6011|65|64[4-9]|62212[6-9]|6221[3-9]|622[2-8]|6229[01]|62292[0-5])[0-9]{0,}$ Discover quite difficult to code, start with: 6011, 622126-622925, 644-649, 65
In javascript I use this function. This is good when u assign it to an onkeyup event and it give result as soon as possible.
function cc_brand_id(cur_val) {
// the regular expressions check for possible matches as you type, hence the OR operators based on the number of chars
// regexp string length {0} provided for soonest detection of beginning of the card numbers this way it could be used for BIN CODE detection also
//JCB
jcb_regex = new RegExp('^(?:2131|1800|35)[0-9]{0,}$'); //2131, 1800, 35 (3528-3589)
// American Express
amex_regex = new RegExp('^3[47][0-9]{0,}$'); //34, 37
// Diners Club
diners_regex = new RegExp('^3(?:0[0-59]{1}|[689])[0-9]{0,}$'); //300-305, 309, 36, 38-39
// Visa
visa_regex = new RegExp('^4[0-9]{0,}$'); //4
// MasterCard
mastercard_regex = new RegExp('^(5[1-5]|222[1-9]|22[3-9]|2[3-6]|27[01]|2720)[0-9]{0,}$'); //2221-2720, 51-55
maestro_regex = new RegExp('^(5[06789]|6)[0-9]{0,}$'); //always growing in the range: 60-69, started with / not something else, but starting 5 must be encoded as mastercard anyway
//Discover
discover_regex = new RegExp('^(6011|65|64[4-9]|62212[6-9]|6221[3-9]|622[2-8]|6229[01]|62292[0-5])[0-9]{0,}$');
////6011, 622126-622925, 644-649, 65
// get rid of anything but numbers
cur_val = cur_val.replace(/\D/g, '');
// checks per each, as their could be multiple hits
//fix: ordering matter in detection, otherwise can give false results in rare cases
var sel_brand = "unknown";
if (cur_val.match(jcb_regex)) {
sel_brand = "jcb";
} else if (cur_val.match(amex_regex)) {
sel_brand = "amex";
} else if (cur_val.match(diners_regex)) {
sel_brand = "diners_club";
} else if (cur_val.match(visa_regex)) {
sel_brand = "visa";
} else if (cur_val.match(mastercard_regex)) {
sel_brand = "mastercard";
} else if (cur_val.match(discover_regex)) {
sel_brand = "discover";
} else if (cur_val.match(maestro_regex)) {
if (cur_val[0] == '5') { //started 5 must be mastercard
sel_brand = "mastercard";
} else {
sel_brand = "maestro"; //maestro is all 60-69 which is not something else, thats why this condition in the end
}
}
return sel_brand;
}
Here you can play with it:
For PHP use this function, this detects some sub VISA/MC cards too:
/**
* Obtain a brand constant from a PAN
*
* @param string $pan Credit card number
* @param bool $include_sub_types Include detection of sub visa brands
* @return string
*/
public static function getCardBrand($pan, $include_sub_types = false)
{
//maximum length is not fixed now, there are growing number of CCs has more numbers in length, limiting can give false negatives atm
//these regexps accept not whole cc numbers too
//visa
$visa_regex = "/^4[0-9]{0,}$/";
$vpreca_regex = "/^428485[0-9]{0,}$/";
$postepay_regex = "/^(402360|402361|403035|417631|529948){0,}$/";
$cartasi_regex = "/^(432917|432930|453998)[0-9]{0,}$/";
$entropay_regex = "/^(406742|410162|431380|459061|533844|522093)[0-9]{0,}$/";
$o2money_regex = "/^(422793|475743)[0-9]{0,}$/";
// MasterCard
$mastercard_regex = "/^(5[1-5]|222[1-9]|22[3-9]|2[3-6]|27[01]|2720)[0-9]{0,}$/";
$maestro_regex = "/^(5[06789]|6)[0-9]{0,}$/";
$kukuruza_regex = "/^525477[0-9]{0,}$/";
$yunacard_regex = "/^541275[0-9]{0,}$/";
// American Express
$amex_regex = "/^3[47][0-9]{0,}$/";
// Diners Club
$diners_regex = "/^3(?:0[0-59]{1}|[689])[0-9]{0,}$/";
//Discover
$discover_regex = "/^(6011|65|64[4-9]|62212[6-9]|6221[3-9]|622[2-8]|6229[01]|62292[0-5])[0-9]{0,}$/";
//JCB
$jcb_regex = "/^(?:2131|1800|35)[0-9]{0,}$/";
//ordering matter in detection, otherwise can give false results in rare cases
if (preg_match($jcb_regex, $pan)) {
return "jcb";
}
if (preg_match($amex_regex, $pan)) {
return "amex";
}
if (preg_match($diners_regex, $pan)) {
return "diners_club";
}
//sub visa/mastercard cards
if ($include_sub_types) {
if (preg_match($vpreca_regex, $pan)) {
return "v-preca";
}
if (preg_match($postepay_regex, $pan)) {
return "postepay";
}
if (preg_match($cartasi_regex, $pan)) {
return "cartasi";
}
if (preg_match($entropay_regex, $pan)) {
return "entropay";
}
if (preg_match($o2money_regex, $pan)) {
return "o2money";
}
if (preg_match($kukuruza_regex, $pan)) {
return "kukuruza";
}
if (preg_match($yunacard_regex, $pan)) {
return "yunacard";
}
}
if (preg_match($visa_regex, $pan)) {
return "visa";
}
if (preg_match($mastercard_regex, $pan)) {
return "mastercard";
}
if (preg_match($discover_regex, $pan)) {
return "discover";
}
if (preg_match($maestro_regex, $pan)) {
if ($pan[0] == '5') { //started 5 must be mastercard
return "mastercard";
}
return "maestro"; //maestro is all 60-69 which is not something else, thats why this condition in the end
}
return "unknown"; //unknown for this system
}
function GetCreditCardBrand(CardNumber: string): string;
begin
if TRegEx.IsMatch(CardNumber,'^4[0-9]{12}(?:[0-9]{3})?$') then
Result := 'visa'
else if TRegEx.IsMatch(CardNumber,'^5[1-5][0-9]{14}$') then
Result := 'master'
else if TRegEx.IsMatch(CardNumber,'^3[47][0-9]{13}$') then
Result := 'express'
else if TRegEx.IsMatch(CardNumber,'^3(?:0[0-5]|[68][0-9])[0-9]{11}$') then
Result := 'diners'
else if TRegEx.IsMatch(CardNumber,'^6(?:011|5[0-9]{2})[0-9]{12}$') then
Result := 'discover'
else if TRegEx.IsMatch(CardNumber,'^(?:2131|1800|35\\d{3})\\d{11}$') then
Result := 'jcb'
end;
Here is the function to check Credit card type using Regex , delphi
In javascript:
function detectCardType(number) {
var re = {
electron: /^(4026|417500|4405|4508|4844|4913|4917)\d+$/,
maestro: /^(5018|5020|5038|5612|5893|6304|6759|6761|6762|6763|0604|6390)\d+$/,
dankort: /^(5019)\d+$/,
interpayment: /^(636)\d+$/,
unionpay: /^(62|88)\d+$/,
visa: /^4[0-9]{12}(?:[0-9]{3})?$/,
mastercard: /^5[1-5][0-9]{14}$/,
amex: /^3[47][0-9]{13}$/,
diners: /^3(?:0[0-5]|[68][0-9])[0-9]{11}$/,
discover: /^6(?:011|5[0-9]{2})[0-9]{12}$/,
jcb: /^(?:2131|1800|35\d{3})\d{11}$/
}
for(var key in re) {
if(re[key].test(number)) {
return key
}
}
}
Unit test:
describe('CreditCard', function() {
describe('#detectCardType', function() {
var cards = {
'8800000000000000': 'UNIONPAY',
'4026000000000000': 'ELECTRON',
'4175000000000000': 'ELECTRON',
'4405000000000000': 'ELECTRON',
'4508000000000000': 'ELECTRON',
'4844000000000000': 'ELECTRON',
'4913000000000000': 'ELECTRON',
'4917000000000000': 'ELECTRON',
'5019000000000000': 'DANKORT',
'5018000000000000': 'MAESTRO',
'5020000000000000': 'MAESTRO',
'5038000000000000': 'MAESTRO',
'5612000000000000': 'MAESTRO',
'5893000000000000': 'MAESTRO',
'6304000000000000': 'MAESTRO',
'6759000000000000': 'MAESTRO',
'6761000000000000': 'MAESTRO',
'6762000000000000': 'MAESTRO',
'6763000000000000': 'MAESTRO',
'0604000000000000': 'MAESTRO',
'6390000000000000': 'MAESTRO',
'3528000000000000': 'JCB',
'3589000000000000': 'JCB',
'3529000000000000': 'JCB',
'6360000000000000': 'INTERPAYMENT',
'4916338506082832': 'VISA',
'4556015886206505': 'VISA',
'4539048040151731': 'VISA',
'4024007198964305': 'VISA',
'4716175187624512': 'VISA',
'5280934283171080': 'MASTERCARD',
'5456060454627409': 'MASTERCARD',
'5331113404316994': 'MASTERCARD',
'5259474113320034': 'MASTERCARD',
'5442179619690834': 'MASTERCARD',
'6011894492395579': 'DISCOVER',
'6011388644154687': 'DISCOVER',
'6011880085013612': 'DISCOVER',
'6011652795433988': 'DISCOVER',
'6011375973328347': 'DISCOVER',
'345936346788903': 'AMEX',
'377669501013152': 'AMEX',
'373083634595479': 'AMEX',
'370710819865268': 'AMEX',
'371095063560404': 'AMEX'
};
Object.keys(cards).forEach(function(number) {
it('should detect card ' + number + ' as ' + cards[number], function() {
Basket.detectCardType(number).should.equal(cards[number]);
});
});
});
});
Do not try to detect credit card type as part of processing a payment. You are risking of declining valid transactions.
If you need to provide information to your payment processor (e.g. PayPal credit card object requires to name the card type), then guess it from the least information available, e.g.
$credit_card['pan'] = preg_replace('/[^0-9]/', '', $credit_card['pan']);
$inn = (int) mb_substr($credit_card['pan'], 0, 2);
// @see http://en.wikipedia.org/wiki/List_of_Bank_Identification_Numbers#Overview
if ($inn >= 40 && $inn <= 49) {
$type = 'visa';
} else if ($inn >= 51 && $inn <= 55) {
$type = 'mastercard';
} else if ($inn >= 60 && $inn <= 65) {
$type = 'discover';
} else if ($inn >= 34 && $inn <= 37) {
$type = 'amex';
} else {
throw new \UnexpectedValueException('Unsupported card type.');
}
This implementation (using only the first two digits) is enough to identify all of the major (and in PayPal's case all of the supported) card schemes. In fact, you might want to skip the exception altogether and default to the most popular card type. Let the payment gateway/processor tell you if there is a validation error in response to your request.
The reality is that your payment gateway does not care about the value you provide.
I use https://github.com/bendrucker/creditcards-types/ to detect the credit card type from number. One issue I ran into is discover test number 6011 1111 1111 1117
from https://www.cybersource.com/developers/other_resources/quick_references/test_cc_numbers/ we can see it is a discover number because it starts by 6011. But the result I get from the creditcards-types is "Maestro". I opened the issue to the author. He replied me very soon and provide this pdf doc https://www.discovernetwork.com/downloads/IPP_VAR_Compliance.pdf From the doc we can see clearly that 6011 1111 1111 1117 does not fall into the range of discover credit card.
public string GetCreditCardType(string CreditCardNumber)
{
Regex regVisa = new Regex("^4[0-9]{12}(?:[0-9]{3})?$");
Regex regMaster = new Regex("^5[1-5][0-9]{14}$");
Regex regExpress = new Regex("^3[47][0-9]{13}$");
Regex regDiners = new Regex("^3(?:0[0-5]|[68][0-9])[0-9]{11}$");
Regex regDiscover = new Regex("^6(?:011|5[0-9]{2})[0-9]{12}$");
Regex regJCB = new Regex("^(?:2131|1800|35\\d{3})\\d{11}$");
if (regVisa.IsMatch(CreditCardNumber))
return "VISA";
else if (regMaster.IsMatch(CreditCardNumber))
return "MASTER";
else if (regExpress.IsMatch(CreditCardNumber))
return "AEXPRESS";
else if (regDiners.IsMatch(CreditCardNumber))
return "DINERS";
else if (regDiscover.IsMatch(CreditCardNumber))
return "DISCOVERS";
else if (regJCB.IsMatch(CreditCardNumber))
return "JCB";
else
return "invalid";
}
Here is the function to check Credit card type using Regex , c#
Check this out:
http://www.breakingpar.com/bkp/home.nsf/0/87256B280015193F87256CC70060A01B
function isValidCreditCard(type, ccnum) {
/* Visa: length 16, prefix 4, dashes optional.
Mastercard: length 16, prefix 51-55, dashes optional.
Discover: length 16, prefix 6011, dashes optional.
American Express: length 15, prefix 34 or 37.
Diners: length 14, prefix 30, 36, or 38. */
var re = new Regex({
"visa": "/^4\d{3}-?\d{4}-?\d{4}-?\d",
"mc": "/^5[1-5]\d{2}-?\d{4}-?\d{4}-?\d{4}$/",
"disc": "/^6011-?\d{4}-?\d{4}-?\d{4}$/",
"amex": "/^3[47]\d{13}$/",
"diners": "/^3[068]\d{12}$/"
}[type.toLowerCase()])
if (!re.test(ccnum)) return false;
// Remove all dashes for the checksum checks to eliminate negative numbers
ccnum = ccnum.split("-").join("");
// Checksum ("Mod 10")
// Add even digits in even length strings or odd digits in odd length strings.
var checksum = 0;
for (var i = (2 - (ccnum.length % 2)); i <= ccnum.length; i += 2) {
checksum += parseInt(ccnum.charAt(i - 1));
}
// Analyze odd digits in even length strings or even digits in odd length strings.
for (var i = (ccnum.length % 2) + 1; i < ccnum.length; i += 2) {
var digit = parseInt(ccnum.charAt(i - 1)) * 2;
if (digit < 10) { checksum += digit; } else { checksum += (digit - 9); }
}
if ((checksum % 10) == 0) return true;
else return false;
}
Here is an example of some boolean functions written in Python that return True if the card is detected as per the function name.
def is_american_express(cc_number):
"""Checks if the card is an american express. If us billing address country code, & is_amex, use vpos
https://en.wikipedia.org/wiki/Bank_card_number#cite_note-GenCardFeatures-3
:param cc_number: unicode card number
"""
return bool(re.match(r'^3[47][0-9]{13}$', cc_number))
def is_visa(cc_number):
"""Checks if the card is a visa, begins with 4 and 12 or 15 additional digits.
:param cc_number: unicode card number
"""
# Standard Visa is 13 or 16, debit can be 19
if bool(re.match(r'^4', cc_number)) and len(cc_number) in [13, 16, 19]:
return True
return False
def is_mastercard(cc_number):
"""Checks if the card is a mastercard. Begins with 51-55 or 2221-2720 and 16 in length.
:param cc_number: unicode card number
"""
if len(cc_number) == 16 and cc_number.isdigit(): # Check digit, before cast to int
return bool(re.match(r'^5[1-5]', cc_number)) or int(cc_number[:4]) in range(2221, 2721)
return False
def is_discover(cc_number):
"""Checks if the card is discover, re would be too hard to maintain. Not a supported card.
:param cc_number: unicode card number
"""
if len(cc_number) == 16:
try:
# return bool(cc_number[:4] == '6011' or cc_number[:2] == '65' or cc_number[:6] in range(622126, 622926))
return bool(cc_number[:4] == '6011' or cc_number[:2] == '65' or 622126 <= int(cc_number[:6]) <= 622925)
except ValueError:
return False
return False
def is_jcb(cc_number):
"""Checks if the card is a jcb. Not a supported card.
:param cc_number: unicode card number
"""
# return bool(re.match(r'^(?:2131|1800|35\d{3})\d{11}$', cc_number)) # wikipedia
return bool(re.match(r'^35(2[89]|[3-8][0-9])[0-9]{12}$', cc_number)) # PawelDecowski
def is_diners_club(cc_number):
"""Checks if the card is a diners club. Not a supported card.
:param cc_number: unicode card number
"""
return bool(re.match(r'^3(?:0[0-6]|[68][0-9])[0-9]{11}$', cc_number)) # 0-5 = carte blance, 6 = international
def is_laser(cc_number):
"""Checks if the card is laser. Not a supported card.
:param cc_number: unicode card number
"""
return bool(re.match(r'^(6304|670[69]|6771)', cc_number))
def is_maestro(cc_number):
"""Checks if the card is maestro. Not a supported card.
:param cc_number: unicode card number
"""
possible_lengths = [12, 13, 14, 15, 16, 17, 18, 19]
return bool(re.match(r'^(50|5[6-9]|6[0-9])', cc_number)) and len(cc_number) in possible_lengths
# Child cards
def is_visa_electron(cc_number):
"""Child of visa. Checks if the card is a visa electron. Not a supported card.
:param cc_number: unicode card number
"""
return bool(re.match(r'^(4026|417500|4508|4844|491(3|7))', cc_number)) and len(cc_number) == 16
def is_total_rewards_visa(cc_number):
"""Child of visa. Checks if the card is a Total Rewards Visa. Not a supported card.
:param cc_number: unicode card number
"""
return bool(re.match(r'^41277777[0-9]{8}$', cc_number))
def is_diners_club_carte_blanche(cc_number):
"""Child card of diners. Checks if the card is a diners club carte blance. Not a supported card.
:param cc_number: unicode card number
"""
return bool(re.match(r'^30[0-5][0-9]{11}$', cc_number)) # github PawelDecowski, jquery-creditcardvalidator
def is_diners_club_carte_international(cc_number):
"""Child card of diners. Checks if the card is a diners club international. Not a supported card.
:param cc_number: unicode card number
"""
return bool(re.match(r'^36[0-9]{12}$', cc_number)) # jquery-creditcardvalidator
// abobjects.com, parvez ahmad ab bulk mailer
use below script
function isValidCreditCard2(type, ccnum) {
if (type == "Visa") {
// Visa: length 16, prefix 4, dashes optional.
var re = /^4\d{3}?\d{4}?\d{4}?\d{4}$/;
} else if (type == "MasterCard") {
// Mastercard: length 16, prefix 51-55, dashes optional.
var re = /^5[1-5]\d{2}?\d{4}?\d{4}?\d{4}$/;
} else if (type == "Discover") {
// Discover: length 16, prefix 6011, dashes optional.
var re = /^6011?\d{4}?\d{4}?\d{4}$/;
} else if (type == "AmEx") {
// American Express: length 15, prefix 34 or 37.
var re = /^3[4,7]\d{13}$/;
} else if (type == "Diners") {
// Diners: length 14, prefix 30, 36, or 38.
var re = /^3[0,6,8]\d{12}$/;
}
if (!re.test(ccnum)) return false;
return true;
/*
// Remove all dashes for the checksum checks to eliminate negative numbers
ccnum = ccnum.split("-").join("");
// Checksum ("Mod 10")
// Add even digits in even length strings or odd digits in odd length strings.
var checksum = 0;
for (var i=(2-(ccnum.length % 2)); i<=ccnum.length; i+=2) {
checksum += parseInt(ccnum.charAt(i-1));
}
// Analyze odd digits in even length strings or even digits in odd length strings.
for (var i=(ccnum.length % 2) + 1; i<ccnum.length; i+=2) {
var digit = parseInt(ccnum.charAt(i-1)) * 2;
if (digit < 10) { checksum += digit; } else { checksum += (digit-9); }
}
if ((checksum % 10) == 0) return true; else return false;
*/
}
jQuery.validator.addMethod("isValidCreditCard", function(postalcode, element) {
return isValidCreditCard2($("#cardType").val(), $("#cardNum").val());
}, "<br>credit card is invalid");
Type</td>
<td class="text"> <form:select path="cardType" cssclass="fields" style="border: 1px solid #D5D5D5;padding: 0px 0px 0px 0px;width: 130px;height: 22px;">
<option value="SELECT">SELECT</option>
<option value="MasterCard">Mastercard</option>
<option value="Visa">Visa</option>
<option value="AmEx">American Express</option>
<option value="Discover">Discover</option>
</form:select> <font color="#FF0000">*</font>
$("#signupForm").validate({
rules:{
companyName:{required: true},
address1:{required: true},
city:{required: true},
state:{required: true},
zip:{required: true},
country:{required: true},
chkAgree:{required: true},
confPassword:{required: true},
lastName:{required: true},
firstName:{required: true},
ccAddress1:{required: true},
ccZip:{
postalcode : true
},
phone:{required: true},
email:{
required: true,
email: true
},
userName:{
required: true,
minlength: 6
},
password:{
required: true,
minlength: 6
},
cardNum:{
isValidCreditCard : true
},
public string GetCreditCardType(string CreditCardNumber)
{
Regex regVisa = new Regex("^4[0-9]{12}(?:[0-9]{3})?$");
Regex regMaster = new Regex("^5[1-5][0-9]{14}$");
Regex regExpress = new Regex("^3[47][0-9]{13}$");
Regex regDiners = new Regex("^3(?:0[0-5]|[68][0-9])[0-9]{11}$");
Regex regDiscover = new Regex("^6(?:011|5[0-9]{2})[0-9]{12}$");
Regex regJCB = new Regex("^(?:2131|1800|35\\d{3})\\d{11}$");
if (regVisa.IsMatch(CreditCardNumber))
return "VISA";
else if (regMaster.IsMatch(CreditCardNumber))
return "MASTER";
else if (regExpress.IsMatch(CreditCardNumber))
return "AEXPRESS";
else if (regDiners.IsMatch(CreditCardNumber))
return "DINERS";
else if (regDiscover.IsMatch(CreditCardNumber))
return "DISCOVERS";
else if (regJCB.IsMatch(CreditCardNumber))
return "JCB";
else
return "invalid";
}
Here is the function to check Credit card type using Regex , c#
The first numbers of the credit card can be used to approximate the vendor:
The first six digits of a card number (including the initial MII digit) are known as the issuer identification number (IIN). These identify the card issuing institution that issued the card to the card holder. The rest of the number is allocated by the card issuer. The card number's length is its number of digits. Many card issuers print the entire IIN and account number on their card.
Based on the above facts I would like to keep a snippet of JAVA code to identify card brand.
Sample card types
public static final String AMERICAN_EXPRESS = "American Express";
public static final String DISCOVER = "Discover";
public static final String JCB = "JCB";
public static final String DINERS_CLUB = "Diners Club";
public static final String VISA = "Visa";
public static final String MASTERCARD = "MasterCard";
public static final String UNKNOWN = "Unknown";
Card Prefixes
// Based on http://en.wikipedia.org/wiki/Bank_card_number#Issuer_identification_number_.28IIN.29
public static final String[] PREFIXES_AMERICAN_EXPRESS = {"34", "37"};
public static final String[] PREFIXES_DISCOVER = {"60", "62", "64", "65"};
public static final String[] PREFIXES_JCB = {"35"};
public static final String[] PREFIXES_DINERS_CLUB = {"300", "301", "302", "303", "304", "305", "309", "36", "38", "39"};
public static final String[] PREFIXES_VISA = {"4"};
public static final String[] PREFIXES_MASTERCARD = {
"2221", "2222", "2223", "2224", "2225", "2226", "2227", "2228", "2229",
"223", "224", "225", "226", "227", "228", "229",
"23", "24", "25", "26",
"270", "271", "2720",
"50", "51", "52", "53", "54", "55"
};
Check to see if the input number has any of the given prefixes.
public String getBrand(String number) {
String evaluatedType;
if (StripeTextUtils.hasAnyPrefix(number, PREFIXES_AMERICAN_EXPRESS)) {
evaluatedType = AMERICAN_EXPRESS;
} else if (StripeTextUtils.hasAnyPrefix(number, PREFIXES_DISCOVER)) {
evaluatedType = DISCOVER;
} else if (StripeTextUtils.hasAnyPrefix(number, PREFIXES_JCB)) {
evaluatedType = JCB;
} else if (StripeTextUtils.hasAnyPrefix(number, PREFIXES_DINERS_CLUB)) {
evaluatedType = DINERS_CLUB;
} else if (StripeTextUtils.hasAnyPrefix(number, PREFIXES_VISA)) {
evaluatedType = VISA;
} else if (StripeTextUtils.hasAnyPrefix(number, PREFIXES_MASTERCARD)) {
evaluatedType = MASTERCARD;
} else {
evaluatedType = UNKNOWN;
}
return evaluatedType;
}
Finally, The Utility method
/**
* Check to see if the input number has any of the given prefixes.
*
* @param number the number to test
* @param prefixes the prefixes to test against
* @return {@code true} if number begins with any of the input prefixes
*/
public static boolean hasAnyPrefix(String number, String... prefixes) {
if (number == null) {
return false;
}
for (String prefix : prefixes) {
if (number.startsWith(prefix)) {
return true;
}
}
return false;
}
Reference
My solution with jQuery:
function detectCreditCardType() {
var type = new Array;
type[1] = '^4[0-9]{12}(?:[0-9]{3})?$'; // visa
type[2] = '^5[1-5][0-9]{14}$'; // mastercard
type[3] = '^6(?:011|5[0-9]{2})[0-9]{12}$'; // discover
type[4] = '^3[47][0-9]{13}$'; // amex
var ccnum = $('.creditcard').val().replace(/[^\d.]/g, '');
var returntype = 0;
$.each(type, function(idx, re) {
var regex = new RegExp(re);
if(regex.test(ccnum) && idx>0) {
returntype = idx;
}
});
return returntype;
}
In case 0 is returned, credit card type is undetected.
"creditcard" class should be added to the credit card input field.
Do not try to detect credit card type as part of processing a payment. You are risking of declining valid transactions.
If you need to provide information to your payment processor (e.g. PayPal credit card object requires to name the card type), then guess it from the least information available, e.g.
$credit_card['pan'] = preg_replace('/[^0-9]/', '', $credit_card['pan']);
$inn = (int) mb_substr($credit_card['pan'], 0, 2);
// @see http://en.wikipedia.org/wiki/List_of_Bank_Identification_Numbers#Overview
if ($inn >= 40 && $inn <= 49) {
$type = 'visa';
} else if ($inn >= 51 && $inn <= 55) {
$type = 'mastercard';
} else if ($inn >= 60 && $inn <= 65) {
$type = 'discover';
} else if ($inn >= 34 && $inn <= 37) {
$type = 'amex';
} else {
throw new \UnexpectedValueException('Unsupported card type.');
}
This implementation (using only the first two digits) is enough to identify all of the major (and in PayPal's case all of the supported) card schemes. In fact, you might want to skip the exception altogether and default to the most popular card type. Let the payment gateway/processor tell you if there is a validation error in response to your request.
The reality is that your payment gateway does not care about the value you provide.
Try this for kotlin. Add Regex and add to the when statement.
private fun getCardType(number: String): String {
val visa = Regex("^4[0-9]{12}(?:[0-9]{3})?$")
val mastercard = Regex("^5[1-5][0-9]{14}$")
val amx = Regex("^3[47][0-9]{13}$")
return when {
visa.matches(number) -> "Visa"
mastercard.matches(number) -> "Mastercard"
amx.matches(number) -> "American Express"
else -> "Unknown"
}
}
Anatoliy's answer in PHP:
public static function detectCardType($num)
{
$re = array(
"visa" => "/^4[0-9]{12}(?:[0-9]{3})?$/",
"mastercard" => "/^5[1-5][0-9]{14}$/",
"amex" => "/^3[47][0-9]{13}$/",
"discover" => "/^6(?:011|5[0-9]{2})[0-9]{12}$/",
);
if (preg_match($re['visa'],$num))
{
return 'visa';
}
else if (preg_match($re['mastercard'],$num))
{
return 'mastercard';
}
else if (preg_match($re['amex'],$num))
{
return 'amex';
}
else if (preg_match($re['discover'],$num))
{
return 'discover';
}
else
{
return false;
}
}
Here's Complete C# or VB code for all kinds of CC related things on codeproject.
This article has been up for a couple years with no negative comments.
The regular expression rules that match the respective card vendors:
(4\d{12}(?:\d{3})?) for VISA.(5[1-5]\d{14}) for MasterCard.(3[47]\d{13}) for AMEX.((?:5020|5038|6304|6579|6761)\d{12}(?:\d\d)?) for Maestro.(3(?:0[0-5]|[68][0-9])[0-9]{11}) for Diners Club.(6(?:011|5[0-9]{2})[0-9]{12}) for Discover.(35[2-8][89]\d\d\d{10}) for JCB.The first six digits of a card number (including the initial MII digit) are known as the issuer identification number (IIN). These identify the card issuing institution that issued the card to the card holder. The rest of the number is allocated by the card issuer. The card number's length is its number of digits. Many card issuers print the entire IIN and account number on their card.
Based on the above facts I would like to keep a snippet of JAVA code to identify card brand.
Sample card types
public static final String AMERICAN_EXPRESS = "American Express";
public static final String DISCOVER = "Discover";
public static final String JCB = "JCB";
public static final String DINERS_CLUB = "Diners Club";
public static final String VISA = "Visa";
public static final String MASTERCARD = "MasterCard";
public static final String UNKNOWN = "Unknown";
Card Prefixes
// Based on http://en.wikipedia.org/wiki/Bank_card_number#Issuer_identification_number_.28IIN.29
public static final String[] PREFIXES_AMERICAN_EXPRESS = {"34", "37"};
public static final String[] PREFIXES_DISCOVER = {"60", "62", "64", "65"};
public static final String[] PREFIXES_JCB = {"35"};
public static final String[] PREFIXES_DINERS_CLUB = {"300", "301", "302", "303", "304", "305", "309", "36", "38", "39"};
public static final String[] PREFIXES_VISA = {"4"};
public static final String[] PREFIXES_MASTERCARD = {
"2221", "2222", "2223", "2224", "2225", "2226", "2227", "2228", "2229",
"223", "224", "225", "226", "227", "228", "229",
"23", "24", "25", "26",
"270", "271", "2720",
"50", "51", "52", "53", "54", "55"
};
Check to see if the input number has any of the given prefixes.
public String getBrand(String number) {
String evaluatedType;
if (StripeTextUtils.hasAnyPrefix(number, PREFIXES_AMERICAN_EXPRESS)) {
evaluatedType = AMERICAN_EXPRESS;
} else if (StripeTextUtils.hasAnyPrefix(number, PREFIXES_DISCOVER)) {
evaluatedType = DISCOVER;
} else if (StripeTextUtils.hasAnyPrefix(number, PREFIXES_JCB)) {
evaluatedType = JCB;
} else if (StripeTextUtils.hasAnyPrefix(number, PREFIXES_DINERS_CLUB)) {
evaluatedType = DINERS_CLUB;
} else if (StripeTextUtils.hasAnyPrefix(number, PREFIXES_VISA)) {
evaluatedType = VISA;
} else if (StripeTextUtils.hasAnyPrefix(number, PREFIXES_MASTERCARD)) {
evaluatedType = MASTERCARD;
} else {
evaluatedType = UNKNOWN;
}
return evaluatedType;
}
Finally, The Utility method
/**
* Check to see if the input number has any of the given prefixes.
*
* @param number the number to test
* @param prefixes the prefixes to test against
* @return {@code true} if number begins with any of the input prefixes
*/
public static boolean hasAnyPrefix(String number, String... prefixes) {
if (number == null) {
return false;
}
for (String prefix : prefixes) {
if (number.startsWith(prefix)) {
return true;
}
}
return false;
}
Reference
Swift 2.1 Version of Usman Y's answer. Use a print statement to verify so call by some string value
print(self.validateCardType(self.creditCardField.text!))
func validateCardType(testCard: String) -> String {
let regVisa = "^4[0-9]{12}(?:[0-9]{3})?$"
let regMaster = "^5[1-5][0-9]{14}$"
let regExpress = "^3[47][0-9]{13}$"
let regDiners = "^3(?:0[0-5]|[68][0-9])[0-9]{11}$"
let regDiscover = "^6(?:011|5[0-9]{2})[0-9]{12}$"
let regJCB = "^(?:2131|1800|35\\d{3})\\d{11}$"
let regVisaTest = NSPredicate(format: "SELF MATCHES %@", regVisa)
let regMasterTest = NSPredicate(format: "SELF MATCHES %@", regMaster)
let regExpressTest = NSPredicate(format: "SELF MATCHES %@", regExpress)
let regDinersTest = NSPredicate(format: "SELF MATCHES %@", regDiners)
let regDiscoverTest = NSPredicate(format: "SELF MATCHES %@", regDiscover)
let regJCBTest = NSPredicate(format: "SELF MATCHES %@", regJCB)
if regVisaTest.evaluateWithObject(testCard){
return "Visa"
}
else if regMasterTest.evaluateWithObject(testCard){
return "MasterCard"
}
else if regExpressTest.evaluateWithObject(testCard){
return "American Express"
}
else if regDinersTest.evaluateWithObject(testCard){
return "Diners Club"
}
else if regDiscoverTest.evaluateWithObject(testCard){
return "Discover"
}
else if regJCBTest.evaluateWithObject(testCard){
return "JCB"
}
return ""
}
Here is a php class function returns CCtype by CCnumber.
This code not validates the card or not runs Luhn algorithm only try to find credit card type based on table in this page. basicly uses CCnumber length and CCcard prefix to determine CCcard type.
<?php
class CreditcardType
{
public static $creditcardTypes = [
[
'Name' => 'American Express',
'cardLength' => [15],
'cardPrefix' => ['34', '37'],
], [
'Name' => 'Maestro',
'cardLength' => [12, 13, 14, 15, 16, 17, 18, 19],
'cardPrefix' => ['5018', '5020', '5038', '6304', '6759', '6761', '6763'],
], [
'Name' => 'Mastercard',
'cardLength' => [16],
'cardPrefix' => ['51', '52', '53', '54', '55'],
], [
'Name' => 'Visa',
'cardLength' => [13, 16],
'cardPrefix' => ['4'],
], [
'Name' => 'JCB',
'cardLength' => [16],
'cardPrefix' => ['3528', '3529', '353', '354', '355', '356', '357', '358'],
], [
'Name' => 'Discover',
'cardLength' => [16],
'cardPrefix' => ['6011', '622126', '622127', '622128', '622129', '62213','62214', '62215', '62216', '62217', '62218', '62219','6222', '6223', '6224', '6225', '6226', '6227', '6228','62290', '62291', '622920', '622921', '622922', '622923','622924', '622925', '644', '645', '646', '647', '648','649', '65'],
], [
'Name' => 'Solo',
'cardLength' => [16, 18, 19],
'cardPrefix' => ['6334', '6767'],
], [
'Name' => 'Unionpay',
'cardLength' => [16, 17, 18, 19],
'cardPrefix' => ['622126', '622127', '622128', '622129', '62213', '62214','62215', '62216', '62217', '62218', '62219', '6222', '6223','6224', '6225', '6226', '6227', '6228', '62290', '62291','622920', '622921', '622922', '622923', '622924', '622925'],
], [
'Name' => 'Diners Club',
'cardLength' => [14],
'cardPrefix' => ['300', '301', '302', '303', '304', '305', '36'],
], [
'Name' => 'Diners Club US',
'cardLength' => [16],
'cardPrefix' => ['54', '55'],
], [
'Name' => 'Diners Club Carte Blanche',
'cardLength' => [14],
'cardPrefix' => ['300', '305'],
], [
'Name' => 'Laser',
'cardLength' => [16, 17, 18, 19],
'cardPrefix' => ['6304', '6706', '6771', '6709'],
],
];
public static function getType($CCNumber)
{
$CCNumber = trim($CCNumber);
$type = 'Unknown';
foreach (CreditcardType::$creditcardTypes as $card) {
if (! in_array(strlen($CCNumber), $card['cardLength'])) {
continue;
}
$prefixes = '/^(' . implode('|', $card['cardPrefix']) . ')/';
if (preg_match($prefixes, $CCNumber) == 1) {
$type = $card['Name'];
break;
}
}
return $type;
}
}
Just a little spoon feeding:
$("#CreditCardNumber").focusout(function () {
var regVisa = /^4[0-9]{12}(?:[0-9]{3})?$/;
var regMasterCard = /^5[1-5][0-9]{14}$/;
var regAmex = /^3[47][0-9]{13}$/;
var regDiscover = /^6(?:011|5[0-9]{2})[0-9]{12}$/;
if (regVisa.test($(this).val())) {
$("#CCImage").html("<img height='40px' src='@Url.Content("~/images/visa.png")'>");
}
else if (regMasterCard.test($(this).val())) {
$("#CCImage").html("<img height='40px' src='@Url.Content("~/images/mastercard.png")'>");
}
else if (regAmex.test($(this).val())) {
$("#CCImage").html("<img height='40px' src='@Url.Content("~/images/amex.png")'>");
}
else if (regDiscover.test($(this).val())) {
$("#CCImage").html("<img height='40px' src='@Url.Content("~/images/discover.png")'>");
}
else {
$("#CCImage").html("NA");
}
});
A javascript improve of @Anatoliy answer
function getCardType (number) {
const numberFormated = number.replace(/\D/g, '')
var patterns = {
VISA: /^4[0-9]{12}(?:[0-9]{3})?$/,
MASTER: /^5[1-5][0-9]{14}$/,
AMEX: /^3[47][0-9]{13}$/,
ELO: /^((((636368)|(438935)|(504175)|(451416)|(636297))\d{0,10})|((5067)|(4576)|(4011))\d{0,12})$/,
AURA: /^(5078\d{2})(\d{2})(\d{11})$/,
JCB: /^(?:2131|1800|35\d{3})\d{11}$/,
DINERS: /^3(?:0[0-5]|[68][0-9])[0-9]{11}$/,
DISCOVERY: /^6(?:011|5[0-9]{2})[0-9]{12}$/,
HIPERCARD: /^(606282\d{10}(\d{3})?)|(3841\d{15})$/,
ELECTRON: /^(4026|417500|4405|4508|4844|4913|4917)\d+$/,
MAESTRO: /^(5018|5020|5038|5612|5893|6304|6759|6761|6762|6763|0604|6390)\d+$/,
DANKORT: /^(5019)\d+$/,
INTERPAYMENT: /^(636)\d+$/,
UNIONPAY: /^(62|88)\d+$/,
}
for (var key in patterns) {
if (patterns[key].test(numberFormated)) {
return key
}
}
}
console.log(getCardType("4539 5684 7526 2091"))Just a little spoon feeding:
$("#CreditCardNumber").focusout(function () {
var regVisa = /^4[0-9]{12}(?:[0-9]{3})?$/;
var regMasterCard = /^5[1-5][0-9]{14}$/;
var regAmex = /^3[47][0-9]{13}$/;
var regDiscover = /^6(?:011|5[0-9]{2})[0-9]{12}$/;
if (regVisa.test($(this).val())) {
$("#CCImage").html("<img height='40px' src='@Url.Content("~/images/visa.png")'>");
}
else if (regMasterCard.test($(this).val())) {
$("#CCImage").html("<img height='40px' src='@Url.Content("~/images/mastercard.png")'>");
}
else if (regAmex.test($(this).val())) {
$("#CCImage").html("<img height='40px' src='@Url.Content("~/images/amex.png")'>");
}
else if (regDiscover.test($(this).val())) {
$("#CCImage").html("<img height='40px' src='@Url.Content("~/images/discover.png")'>");
}
else {
$("#CCImage").html("NA");
}
});
recently I needed such functionality, I was porting Zend Framework Credit Card Validator to ruby. ruby gem: https://github.com/Fivell/credit_card_validations zend framework: https://github.com/zendframework/zf2/blob/master/library/Zend/Validator/CreditCard.php
They both use INN ranges for detecting type. Here you can read about INN
According to this you can detect credit card alternatively (without regexps,but declaring some rules about prefixes and possible length)
So we have next rules for most used cards
######## most used brands #########
visa: [
{length: [13, 16], prefixes: ['4']}
],
mastercard: [
{length: [16], prefixes: ['51', '52', '53', '54', '55']}
],
amex: [
{length: [15], prefixes: ['34', '37']}
],
######## other brands ########
diners: [
{length: [14], prefixes: ['300', '301', '302', '303', '304', '305', '36', '38']},
],
#There are Diners Club (North America) cards that begin with 5. These are a joint venture between Diners Club and MasterCard, and are processed like a MasterCard
# will be removed in next major version
diners_us: [
{length: [16], prefixes: ['54', '55']}
],
discover: [
{length: [16], prefixes: ['6011', '644', '645', '646', '647', '648',
'649', '65']}
],
jcb: [
{length: [16], prefixes: ['3528', '3529', '353', '354', '355', '356', '357', '358', '1800', '2131']}
],
laser: [
{length: [16, 17, 18, 19], prefixes: ['6304', '6706', '6771']}
],
solo: [
{length: [16, 18, 19], prefixes: ['6334', '6767']}
],
switch: [
{length: [16, 18, 19], prefixes: ['633110', '633312', '633304', '633303', '633301', '633300']}
],
maestro: [
{length: [12, 13, 14, 15, 16, 17, 18, 19], prefixes: ['5010', '5011', '5012', '5013', '5014', '5015', '5016', '5017', '5018',
'502', '503', '504', '505', '506', '507', '508',
'6012', '6013', '6014', '6015', '6016', '6017', '6018', '6019',
'602', '603', '604', '605', '6060',
'677', '675', '674', '673', '672', '671', '670',
'6760', '6761', '6762', '6763', '6764', '6765', '6766', '6768', '6769']}
],
# Luhn validation are skipped for union pay cards because they have unknown generation algoritm
unionpay: [
{length: [16, 17, 18, 19], prefixes: ['622', '624', '625', '626', '628'], skip_luhn: true}
],
dankrot: [
{length: [16], prefixes: ['5019']}
],
rupay: [
{length: [16], prefixes: ['6061', '6062', '6063', '6064', '6065', '6066', '6067', '6068', '6069', '607', '608'], skip_luhn: true}
]
}
Then by searching prefix and comparing length you can detect credit card brand. Also don't forget about luhn algoritm (it is descibed here http://en.wikipedia.org/wiki/Luhn).
UPDATE
updated list of rules can be found here https://raw.githubusercontent.com/Fivell/credit_card_validations/master/lib/data/brands.yaml
Try this.For swift.
func checkCardValidation(number : String) -> Bool
{
let reversedInts = number.characters.reversed().map { Int(String($0)) }
return reversedInts.enumerated().reduce(0, {(sum, val) in
let odd = val.offset % 2 == 1
return sum + (odd ? (val.element! == 9 ? 9 : (val.element! * 2) % 9) : val.element!)
}) % 10 == 0
}
Use.
if (self.checkCardValidation(number: "yourNumber") == true) {
print("Card Number valid")
}else{
print("Card Number not valid")
}
Here is a php class function returns CCtype by CCnumber.
This code not validates the card or not runs Luhn algorithm only try to find credit card type based on table in this page. basicly uses CCnumber length and CCcard prefix to determine CCcard type.
<?php
class CreditcardType
{
public static $creditcardTypes = [
[
'Name' => 'American Express',
'cardLength' => [15],
'cardPrefix' => ['34', '37'],
], [
'Name' => 'Maestro',
'cardLength' => [12, 13, 14, 15, 16, 17, 18, 19],
'cardPrefix' => ['5018', '5020', '5038', '6304', '6759', '6761', '6763'],
], [
'Name' => 'Mastercard',
'cardLength' => [16],
'cardPrefix' => ['51', '52', '53', '54', '55'],
], [
'Name' => 'Visa',
'cardLength' => [13, 16],
'cardPrefix' => ['4'],
], [
'Name' => 'JCB',
'cardLength' => [16],
'cardPrefix' => ['3528', '3529', '353', '354', '355', '356', '357', '358'],
], [
'Name' => 'Discover',
'cardLength' => [16],
'cardPrefix' => ['6011', '622126', '622127', '622128', '622129', '62213','62214', '62215', '62216', '62217', '62218', '62219','6222', '6223', '6224', '6225', '6226', '6227', '6228','62290', '62291', '622920', '622921', '622922', '622923','622924', '622925', '644', '645', '646', '647', '648','649', '65'],
], [
'Name' => 'Solo',
'cardLength' => [16, 18, 19],
'cardPrefix' => ['6334', '6767'],
], [
'Name' => 'Unionpay',
'cardLength' => [16, 17, 18, 19],
'cardPrefix' => ['622126', '622127', '622128', '622129', '62213', '62214','62215', '62216', '62217', '62218', '62219', '6222', '6223','6224', '6225', '6226', '6227', '6228', '62290', '62291','622920', '622921', '622922', '622923', '622924', '622925'],
], [
'Name' => 'Diners Club',
'cardLength' => [14],
'cardPrefix' => ['300', '301', '302', '303', '304', '305', '36'],
], [
'Name' => 'Diners Club US',
'cardLength' => [16],
'cardPrefix' => ['54', '55'],
], [
'Name' => 'Diners Club Carte Blanche',
'cardLength' => [14],
'cardPrefix' => ['300', '305'],
], [
'Name' => 'Laser',
'cardLength' => [16, 17, 18, 19],
'cardPrefix' => ['6304', '6706', '6771', '6709'],
],
];
public static function getType($CCNumber)
{
$CCNumber = trim($CCNumber);
$type = 'Unknown';
foreach (CreditcardType::$creditcardTypes as $card) {
if (! in_array(strlen($CCNumber), $card['cardLength'])) {
continue;
}
$prefixes = '/^(' . implode('|', $card['cardPrefix']) . ')/';
if (preg_match($prefixes, $CCNumber) == 1) {
$type = $card['Name'];
break;
}
}
return $type;
}
}
Updated: 15th June 2016 (as an ultimate solution currently)
Please note that I even give vote up for the one is top voted, but to make it clear these are the regexps actually works i tested it with thousands of real BIN codes. The most important is to use start strings (^) otherwise it will give false results in real world!
JCB ^(?:2131|1800|35)[0-9]{0,}$ Start with: 2131, 1800, 35 (3528-3589)
American Express ^3[47][0-9]{0,}$ Start with: 34, 37
Diners Club ^3(?:0[0-59]{1}|[689])[0-9]{0,}$ Start with: 300-305, 309, 36, 38-39
Visa ^4[0-9]{0,}$ Start with: 4
MasterCard ^(5[1-5]|222[1-9]|22[3-9]|2[3-6]|27[01]|2720)[0-9]{0,}$ Start with: 2221-2720, 51-55
Maestro ^(5[06789]|6)[0-9]{0,}$ Maestro always growing in the range: 60-69, started with / not something else, but starting 5 must be encoded as mastercard anyway. Maestro cards must be detected in the end of the code because some others has in the range of 60-69. Please look at the code.
Discover ^(6011|65|64[4-9]|62212[6-9]|6221[3-9]|622[2-8]|6229[01]|62292[0-5])[0-9]{0,}$ Discover quite difficult to code, start with: 6011, 622126-622925, 644-649, 65
In javascript I use this function. This is good when u assign it to an onkeyup event and it give result as soon as possible.
function cc_brand_id(cur_val) {
// the regular expressions check for possible matches as you type, hence the OR operators based on the number of chars
// regexp string length {0} provided for soonest detection of beginning of the card numbers this way it could be used for BIN CODE detection also
//JCB
jcb_regex = new RegExp('^(?:2131|1800|35)[0-9]{0,}$'); //2131, 1800, 35 (3528-3589)
// American Express
amex_regex = new RegExp('^3[47][0-9]{0,}$'); //34, 37
// Diners Club
diners_regex = new RegExp('^3(?:0[0-59]{1}|[689])[0-9]{0,}$'); //300-305, 309, 36, 38-39
// Visa
visa_regex = new RegExp('^4[0-9]{0,}$'); //4
// MasterCard
mastercard_regex = new RegExp('^(5[1-5]|222[1-9]|22[3-9]|2[3-6]|27[01]|2720)[0-9]{0,}$'); //2221-2720, 51-55
maestro_regex = new RegExp('^(5[06789]|6)[0-9]{0,}$'); //always growing in the range: 60-69, started with / not something else, but starting 5 must be encoded as mastercard anyway
//Discover
discover_regex = new RegExp('^(6011|65|64[4-9]|62212[6-9]|6221[3-9]|622[2-8]|6229[01]|62292[0-5])[0-9]{0,}$');
////6011, 622126-622925, 644-649, 65
// get rid of anything but numbers
cur_val = cur_val.replace(/\D/g, '');
// checks per each, as their could be multiple hits
//fix: ordering matter in detection, otherwise can give false results in rare cases
var sel_brand = "unknown";
if (cur_val.match(jcb_regex)) {
sel_brand = "jcb";
} else if (cur_val.match(amex_regex)) {
sel_brand = "amex";
} else if (cur_val.match(diners_regex)) {
sel_brand = "diners_club";
} else if (cur_val.match(visa_regex)) {
sel_brand = "visa";
} else if (cur_val.match(mastercard_regex)) {
sel_brand = "mastercard";
} else if (cur_val.match(discover_regex)) {
sel_brand = "discover";
} else if (cur_val.match(maestro_regex)) {
if (cur_val[0] == '5') { //started 5 must be mastercard
sel_brand = "mastercard";
} else {
sel_brand = "maestro"; //maestro is all 60-69 which is not something else, thats why this condition in the end
}
}
return sel_brand;
}
Here you can play with it:
For PHP use this function, this detects some sub VISA/MC cards too:
/**
* Obtain a brand constant from a PAN
*
* @param string $pan Credit card number
* @param bool $include_sub_types Include detection of sub visa brands
* @return string
*/
public static function getCardBrand($pan, $include_sub_types = false)
{
//maximum length is not fixed now, there are growing number of CCs has more numbers in length, limiting can give false negatives atm
//these regexps accept not whole cc numbers too
//visa
$visa_regex = "/^4[0-9]{0,}$/";
$vpreca_regex = "/^428485[0-9]{0,}$/";
$postepay_regex = "/^(402360|402361|403035|417631|529948){0,}$/";
$cartasi_regex = "/^(432917|432930|453998)[0-9]{0,}$/";
$entropay_regex = "/^(406742|410162|431380|459061|533844|522093)[0-9]{0,}$/";
$o2money_regex = "/^(422793|475743)[0-9]{0,}$/";
// MasterCard
$mastercard_regex = "/^(5[1-5]|222[1-9]|22[3-9]|2[3-6]|27[01]|2720)[0-9]{0,}$/";
$maestro_regex = "/^(5[06789]|6)[0-9]{0,}$/";
$kukuruza_regex = "/^525477[0-9]{0,}$/";
$yunacard_regex = "/^541275[0-9]{0,}$/";
// American Express
$amex_regex = "/^3[47][0-9]{0,}$/";
// Diners Club
$diners_regex = "/^3(?:0[0-59]{1}|[689])[0-9]{0,}$/";
//Discover
$discover_regex = "/^(6011|65|64[4-9]|62212[6-9]|6221[3-9]|622[2-8]|6229[01]|62292[0-5])[0-9]{0,}$/";
//JCB
$jcb_regex = "/^(?:2131|1800|35)[0-9]{0,}$/";
//ordering matter in detection, otherwise can give false results in rare cases
if (preg_match($jcb_regex, $pan)) {
return "jcb";
}
if (preg_match($amex_regex, $pan)) {
return "amex";
}
if (preg_match($diners_regex, $pan)) {
return "diners_club";
}
//sub visa/mastercard cards
if ($include_sub_types) {
if (preg_match($vpreca_regex, $pan)) {
return "v-preca";
}
if (preg_match($postepay_regex, $pan)) {
return "postepay";
}
if (preg_match($cartasi_regex, $pan)) {
return "cartasi";
}
if (preg_match($entropay_regex, $pan)) {
return "entropay";
}
if (preg_match($o2money_regex, $pan)) {
return "o2money";
}
if (preg_match($kukuruza_regex, $pan)) {
return "kukuruza";
}
if (preg_match($yunacard_regex, $pan)) {
return "yunacard";
}
}
if (preg_match($visa_regex, $pan)) {
return "visa";
}
if (preg_match($mastercard_regex, $pan)) {
return "mastercard";
}
if (preg_match($discover_regex, $pan)) {
return "discover";
}
if (preg_match($maestro_regex, $pan)) {
if ($pan[0] == '5') { //started 5 must be mastercard
return "mastercard";
}
return "maestro"; //maestro is all 60-69 which is not something else, thats why this condition in the end
}
return "unknown"; //unknown for this system
}
Source: Stackoverflow.com