The San Diego Network Access Point (SD-NAP), established in February of 1998, is a neutral network traffic exchange facility that is intended to provide a location for local data network service providers to exchange Internet traffic. It is hosted by the Cooperative Association for Internet Data Analysis (CAIDA) at the University of California's San Diego Supercomputer Center (SDSC) and is collaboratively supported by SDSC and CAIDA operational networking staff.

The purposes of the SD-NAP are to facilitate efficient interconnection of Internet Protocol transit networks within and to San Diego Local Access and Transport Area, California LATA 6, and to provide a platform for traffic analysis by CAIDA researchers with the goal of promoting a robust, scalable global Internet infrastructure. Participants are permitting UCSD staff to analyze their Internet traffic data as part of the consideration for supporting SD-NAP. Researchers from SDSC's NLANR and CAIDA have monitored traffic at the federally-sponsored FIX-West exchange facility and elsewhere since 1995, conducting analyses of traffic flows and packet traces and reviews of TCP header information.

Connection to the SD-NAP is open to all data network service providers and research and educational organizations whose networks use the conventions required for connection to the Global Internet, as defined by the Internet Engineering Task Force (IETF) in the specifications for interconnectivity called Requests for Comments (RFCs).

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