4.3 Billion IP Addresses Have Been Allocated

The Internet Corporation for Assigned Names and Numbers (icann.org) announced that the last remaining IPv4 (Internet Protocol version 4) Internet addresses from the central pool of about 4.3 billlion were allocated.

The next Internet protocol, IPv6, will open up a pool of Internet addresses that is a billion-trillion times larger than the total pool of IPv4 addresses--a supply that should be sufficient for the foreseeable future.