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Regional Internet registry

Regional Internet Registry
Area served

A regional Internet registry (RIR) is an organization that manages the allocation and registration of Internet number resources within a particular region of the world. Internet number resources include IP addresses and autonomous system (AS) numbers.

Map of Regional Internet Registries
Regional Internet Registries from 2002–2005
Regional Internet Registries until 2002

The Regional Internet Registry system evolved over time, eventually dividing the world into five RIRs:


  • Internet Assigned Numbers Authority 1
  • Number Resource Organization 2
  • See also 3
  • References 4

Internet Assigned Numbers Authority

Regional Internet Registries are components of the Internet Number Registry System, which is described in

  1. ^ African Network Information Centre
  2. ^ American Registry for Internet Numbers
  3. ^ Asia-Pacific Network Information Centre
  4. ^ Latin America and Caribbean Network Information Centre
  5. ^ RIPE Network Coordination Centre
  6. ^ R. Housley, J. Curran, G. Huston, D. Conrad (August 2013). The Internet Numbers Registry System.  
  7. ^ a b Number Resource Organization
  8. ^ The Address Supporting Organization


See also

  • Protect the unallocated IP number resource pool,
  • Promote and protect the bottom-up policy development process of the Internet, and
  • Act as a focal point for Internet community input into the RIR system.

The main aims of the NRO are to:

AFRINIC, which was officially created in April 2005, joined on April 25, 2005.

The Number Resource Organization[7] (NRO) is an unincorporated organization uniting the five RIRs. It came into existence on October 24, 2003, when the four existing RIRs entered into a memorandum of understanding (MoU) in order to undertake joint activities, including joint technical projects, liaison activities and policy co-ordination.

Number Resource Organization

which undertakes coordination of global IP addressing policies within the ICANN framework. [8]

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