<Li> tighter control by regional Internet registries on the allocation of addresses to local Internet registries; </Li> <Li> network renumbering and subnetting to reclaim large blocks of address space allocated in the early days of the Internet, when the Internet used inefficient classful network addressing . </Li> <P> On 31 January 2011, the last two unreserved IANA / 8 address blocks were allocated to APNIC according to RIR request procedures . This left five reserved but unallocated / 8 blocks . In accord with ICANN policies, IANA proceeded to allocate one of those five / 8s to each RIR, exhausting the IANA pool, at a ceremony and press conference on 3 February 2011 . </P> <P> The various legacy address blocks with administration historically split among the RIRs were distributed to the RIRs in February 2011 . </P>

When did iana make the final /8 allocations of ipv4 addresses