History of the NRO

The Number Resource Organization (NRO) was established in 2003 as a coordinating body for the world’s Regional Internet Registries (RIRs).

On 24 October 2003, the four existing RIRs – APNIC, ARIN, LACNIC, and RIPE NCC – entered into a Memorandum of Understanding (MoU) to form the NRO.

On 31 October 2003, the RIRs delivered an Open Letter to ICANN advising it of the formation of the NRO.

The letter included a copy of the NRO MoU and a proposed MoU to form a new ICANN Supporting Organization (SO) for the Numbers community: the Address Supporting Organization (ASO).

The world’s fifth RIR, AFRINIC, was incorporated in April 2005 and subsequently signed the NRO MoU.

Founding Documents

NRO-ICANN Memorandum of Understanding (MOU)
ASO Memorandum of Understanding
 Open Letter to ICANN upon NRO’s Formation

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Last modified on 07/11/2018