How to find Port number of IP address

Question

We can find out IP address of a domain name or URL  But how to find out Port number on which a domain name is hosted

User · Accepted Answer

Unfortunately the standard DNS A-record (domain name to IP address) used by web-browsers to locate web-servers does not include a port number. Web-browsers use the URL protocol prefix (http://) to determine the port number (http = 80, https = 443, ftp = 21, etc.) unless the port number is specifically typed in the URL (for example "http://www.simpledns.com:5000" = port 5000).

Can I specify a TCP/IP port number for my web-server in DNS? (Other than the standard port 80)

User · Answer

The port is usually fixed  for DNS it s 53

User · Answer

Use of the netstat -a command will give you a list of connections to your system server where you are executing the command   For example it will display as below  where 35070 is the port number   TCP    10 144 0 159   52121      sd-s-fgh 35070   ESTABLISHED

User · Answer

domain   self env  ir config parameter   get param  web base url     I got the hostname and port number using this

User · Answer

Port numbers are defined by convention   HTTP servers generally listen on port 80  ssh servers listen on 22   But there are no requirements that they do

User · Answer

DNS server usually have a standard of ports used  But if it s different  you could try nmap and do a port scan like so    gt  nmap 127 0 0 1

User · Answer

Quite an old question  but might be helpful to somebody in need   If you know the url   1  open the chrome browser   2  open developer tools in chrome    3  Put the url in search bar and hit enter 4  look in network tab  you will see the ip and port both

User · Answer

If it is a normal then the port number is always 80 and may be written as http   www somewhere com 80 Though you don t need to specify it as  80 is the default of every web browser    If the site chose to use something else then they are intending to hide from anything not sent by a  friendly  or linked to  Those ones usually show with https and their port number is unknown and decided by their admin   If you choose to runn a port scanner trying every number nn from say 10000 to 30000 in https   something somewhere com nn Then your isp or their antivirus will probably notice and disconnect you

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