What is the total amount of public IPv4 addresses

Question

Yes  I am needing to know what the total number possible IPs in the public IPv4 space    I m not sure where to even get a neat list of all the IP address ranges  so could someone point me to a resource to calculate this myself or calculate the total number of IPs for me    Also  by Public IPs I mean not counting reserved or private-range IP addresses   Only the ones that can be access through the internet

User · Answer

Just a small correction for Marko s answer  exact number can t be produced out of some general calculations straight forward due to the next fact  Valid IP addresses should also not end with binary 0 or 1 sequences that have same length as zero sequence in subnet mask  So the final answer really depends on the total number of subnets  Marko s answer - 2   total subnet count

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https   www ripe net internet-coordination press-centre understanding-ip-addressing  For IPv4  this pool is 32-bits  2      in size and contains 4 294 967 296 IPv4 addresses   In case of IPv6  The IPv6 address space is 128-bits  2    8  in size  containing 340 282 366 920 938 463 463 374 607 431 768 211 456 IPv6 addresses   inclusive of RESERVED IP  Reserved address blocks  Range  Description Reference   0 0 0 0 8  Current network  only valid as source address   RFC 6890  10 0 0 0 8 Private network RFC 1918  100 64 0 0 10  Shared Address Space    RFC 6598  127 0 0 0 8    Loopback    RFC 6890  169 254 0 0 16 Link-local  RFC 3927  172 16 0 0 12  Private network RFC 1918  192 0 0 0 24   IETF Protocol Assignments   RFC 6890  192 0 2 0 24   TEST-NET-1  documentation and examples  RFC 5737  192 88 99 0 24 IPv6 to IPv4 relay  includes 2002   16  RFC 3068  192 168 0 0 16 Private network RFC 1918  198 18 0 0 15  Network benchmark tests RFC 2544  198 51 100 0 24    TEST-NET-2  documentation and examples  RFC 5737  203 0 113 0 24 TEST-NET-3  documentation and examples  RFC 5737  224 0 0 0 4    IP multicast  former Class D network    RFC 5771  240 0 0 0 4    Reserved  former Class E network    RFC 1700  255 255 255 255    Broadcast   RFC 919  wiki has full details and this has details of IPv6

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According to Reserved IP addresses there are 588 514 304 reserved addresses and since there are 4 294 967 296  2 32  IPv4 addressess in total  there are 3 706 452 992 public addresses   And too many addresses in this post

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3 681 billion is the current total in the year 2020   Source  https   blog apnic net 2020 01 21 addressing-2019

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Public IP Addresses     https   github com stephenlb geo-ip will generate a list of Valid IP Public Addresses including Localities     1 0 0 0 8  to  191 0 0 0 8  are the valid public IP Address range exclusive of the reserved Private IP Addresses as follows   import iptools    Private IP Addresses private ips   iptools IpRangeList       0 0 0 0 8         10 0 0 0 8        100 64 0 0 10    127 0 0 0 8        169 254 0 0 16    172 16 0 0 12     192 0 0 0 24     192 0 2 0 24        192 88 99 0 24    192 168 0 0 16    198 18 0 0 15    198 51 100 0 24        203 0 113 0 24    224 0 0 0 4       240 0 0 0 4      255 255 255 255 32      IP Generator  Generates a JSON dump of IP Addresses and associated Geo information  Note that the valid public IP Address range is from  1 0 0 0 8  to  191 0 0 0 8  excluding the reserved Private IP Address ranges shown lower down in this readme   docker build -t geo-ip   docker run -e IPRANGE  54 0 0 0 30  geo-ip                  a few IPs docker run -e IPRANGE  54 0 0 0 26  geo-ip                  a few more IPs docker run -e IPRANGE  54 0 0 0 16  geo-ip                  a lot more IPs docker run -e IPRANGE  0 0 0 0 0    geo-ip                  ALL IPs   slooooowwwwww   docker run -e IPRANGE  0 0 0 0 0    geo-ip  gt  geo-ip json    ALL IPs saved to JSON File docker run geo-ip    A little faster option for scanning all valid public addresses   for i in   seq 1 191   do       docker run -e IPRANGE   i 0 0 0 8  geo-ip        sleep 1     done   This prints less than 4 228 250 625 JSON lines to STDOUT  Here is an example of one of the lines     city    Palo Alto    ip    0 0 0 0    longitude   -122 1274    continent    North America    continent code    NA     state    California    country    United States    latitude   37 418    iso code    US    state code    CA    aso    PubNub     asn    11404    zip code    94107     Private and Reserved IP Range  The dockerfile in the repo above will exclude non-usable IP addresses following the guide from the wikipedia article  https   en wikipedia org wiki Reserved IP addresses  MaxMind Geo IP  The dockerfile imports a free public Database provided by https   www maxmind com en home

[ip-address] What is the total amount of public IPv4 addresses?

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