News release: "A critical point in the history of the Internet was reached today with the allocation of the last remaining IPv4 (Internet Protocol version 4) Internet addresses from a central pool. It means the future expansion of the Internet is now dependant on the successful global deployment of the next generation of Internet protocol, called IPv6. The announcement was made by four international non-profit groups, which collaboratively work to coordinate the world’s Internet addressing system and its technical standards. At a news conference in Miami, Florida, the Internet Corporation for Assigned Names and Numbers (ICANN) joined the Number Resources Organization (NRO), the Internet Architecture Board (IAB) and the Internet Society in announcing that the pool of first generation Internet addresses has now been completely emptied.
The final allocation of Internet addresses was administered by the Internet Assigned Numbers Authority (IANA), which is a function of ICANN...The new 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 (about 4.3 billion), which means the number of IPv6 addresses is virtually inexhaustible for the foreseeable future."