The Number Resource Organization (NRO) announced today that the free pool of available IPv4 addresses is now fully depleted.
On Monday, January 31, the Internet Assigned Numbers Authority (IANA)
allocated two blocks of IPv4 address space to APNIC, the Regional
Internet Registry (RIR) for the Asia Pacific region, which triggered
a global policy to allocate the remaining IANA pool equally between
the five RIRs. Today IANA allocated those blocks. This means that
there are no longer any IPv4 addresses available for allocation from
the IANA to the five RIRs.
IANA assigns IPv4 addresses to the RIRs in blocks that equate to
1/256th of the entire IPv4 address space. Each block is referred to
as a "/8" or "slash-8". A global policy agreed on by all five RIR
communities and ratified in 2009 by ICANN, the international body
responsible for the IANA function, dictated that when the IANA IPv4
free pool reached five remaining /8 blocks, these blocks were to be
simultaneously and equally distributed to the five RIRs.
"This is an historic day in the history of the Internet, and one we
have been anticipating for quite some time," states Raul Echeberria,
Chairman of the Number Resource Organization (NRO), the official
representative of the five RIRs. "The future of the Internet is in
IPv6. All Internet stakeholders must now take definitive action to
"This is truly a major turning point in the on-going development of
the Internet," said Rod Beckstrom, ICANN's President and Chief
Executive Officer. "Nobody was caught off guard by this, the Internet
technical community has been planning for IPv4 depletion for quite
some time. But it means the adoption of IPv6 is now of paramount
importance, since it will allow the Internet to continue its amazing
growth and foster the global innovation we?ve all come to expect."
IPv6 is the "next generation" of the Internet Protocol, providing a
hugely expanded address space and allowing the Internet to grow into
the future. "Billions of people world wide use the Internet for
everything from sending tweets to paying bills. The transition to
IPv6 from IPv4 represents an opportunity for even more innovative
applications without the fear of running out of essential Internet IP
addresses," said Vice President of IANA Elise Gerich.
Adoption of IPv6 is now vital for all Internet stakeholders. The RIRs
have been working with network operators at the local, regional, and
global level for more than a decade to offer training and advice on
IPv6 adoption and ensure that everyone is prepared for the exhaustion
"Each RIR will have its final full /8 from IANA, plus any existing IP
address holdings to distribute. Depending on address space requests
received, this could last each RIR anywhere from a few weeks to many
months. It's only a matter of time before the RIRs and Internet
Service Providers (ISPs) must start denying requests for IPv4 address
space. Deploying IPv6 is now a requirement, not an option," added
Echeberria. IPv6 address space has been available since 1999. Visit
http://www.nro.net/ipv6/ for more information on IPv6, or your local
RIR for information on how to get address space.