Five /8s allocated to RIRs - no unallocated IPv4 unicast /8s remain


The IANA IPv4 registry has been updated to reflect the allocation of five /8 IPv4 blocks: one to each RIR, in February 2011. You can find the updated IANA IPv4 registry at:

Please update your filters as appropriate.

There are no more unallocated unicast IPv4 /8s in the IANA IPv4 Address Space Registry.

Kind regards,

Leo Vegoda
Number Resources Manager, IANA