[ALAC-Announce] Announcement on full allocation of the unicast IPv4 address space

ICANN At-Large Staff staff at atlarge.icann.org
Sat Feb 5 03:17:00 UTC 2011

Dear All, 


Please see below a message from Leo Vegoda, Operational Excellence Officer -
IANA, on the full allocation of the unicast IPv4 address space that took
place Thursday, 3 February 2011:





Dear At-Large Advisory Committee,


We are writing to you to provide you information about the full allocation
of the unicast IPv4 address space.


As you know, IP address policy is developed in a bottom-up fashion, through
the RIR communities. When ICANN's IANA Department needs to perform an
action, a single policy is developed and ratified by ICANN's Board of
Directors. These policies are termed Global Policies. The RIR communities
followed this process during 2008 and 2009 to develop such a policy for the
allocation of the last unicast IPv4 blocks to the RIRs: the Global Policy
for the Allocation of the Remaining IPv4 Address Space. The ICANN Board of
Directors ratified the policy on 6 March 2009.


A background report on the policy development process was published on the
ICANN web site at:


      . http://www.icann.org/en/announcements/announcement-2-05feb09-en.htm


A summary of the ICANN Board of Director's action can be seen on ICANN's
Community wiki at:




The actual policy is published on the ICANN web site at:


      . http://www.icann.org/en/general/allocation-remaining-ipv4-space.htm


The policy is triggered when just five IPv4 /8s remain unallocated.


On 18 January 2011, ICANN received a request from APNIC and after verifying
that it met the requirements set out in the Policy For Allocation of IPv4
Blocks to Regional Internet Registries, which was also developed through the
RIRs' bottom-up process and can be found on the ICANN web site at:


      . http://www.icann.org/en/general/allocation-IPv4-rirs.html


ICANN staff allocated two /8s to APNIC. This triggered the implementation of
the Exhaustion Phase set out in the Global Policy for the Allocation of the
Remaining IPv4 Address Space, which occurred yesterday.


As a result of the implementation of this policy, each RIR has received a
single /8 and there are no more unallocated IPv4 unicast /8s. The current
status of the IPv4 address space can be seen in the IANA IPv4 Address Space
Registry at:




If you have any questions about this then please let us know.


Kind regards,


Leo Vegoda





Heidi Ullrich, Matthias Langenegger, Seth Greene, Gisella Gruber-White,
Marilyn Vernon, 

ICANN At-Large Staff


More information about the ALAC-Announce mailing list