Today the Number Resource Organization (NRO), the body which represents the five
Regional Internet Registries (RIRs) announced the final five remaining address
blocks (one /8 block containing approximately 16.5 million IP addresses) were shared
equally among the world’s five regions.
This event indicates a key milestone in IPv4 exhaustion; the Internet Assigned
Numbers Authority’s (IANA) store of unallocated IPv4 address space is now fully
depleted and only the regional free pools remain unallocated.