NRO.NET
On October 24, 2003, the four Regional Internet Registries (RIRs) - APNIC, ARIN, LACNIC and RIPE NCC - entered into a Memorandum of Understanding (MoU) to form the Number Resource Organization (NRO). The purpose of the NRO is to undertake joint activities of the RIRs, including joint technical projects, liaison activities and policy co-ordination.
Since the NRO was formed, if has been joined by AfriNIC, the fifth RIR.
See: http://www.nro.net
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