The Number Resource Organization, the coordinating mechanism for the five Regional Internet Registries or RIRs, this morning announced that less than 5% of the world’s IPv4 (Internet Protocol version 4) addresses remain unallocated. The IPv4 pool first dipped below 10% in January 2010, and in the next nine months some 200 million addresses have subsequently been allocated from the Internet Assigned Numbers Authority (IANA) to the RIRs.

NRO anticipates to allocate the last IPv4 address blocks to the registries within months.