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ARIN (American Registry for Internet Numbers)

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Note: Many topics at this site are reduced versions of the text in "The Encyclopedia of Networking and Telecommunications." Search results will not be as extensive as a search of the book's CD-ROM.

On December 22, 1997, ARIN was officially made the authority of IP number administration in North America. This authority was transferred from Network Solutions, Inc. (InterNIC) by IANA (Internet Assigned Numbers Authority). ARIN is authorized by the National Science Foundation. Other registration agencies include RIPE NCC (Réseaux IP Européens Network Coordination Centre) and APNIC (Asia Pacific Network Information Centre). The topic CIDR (Classless Inter-Domain Routing) explains how these agencies are involved in Internet address allocation and registration.

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