Listed below are useful external sites on information relating to the Reassigned Number Database.

Federal Communications Commission (FCC) 
Below are relevant pages and FCC orders on the FCC website relating to the Reassigned Number Database

North American Numbering Council (NANC) 
The NANC is a Federal Advisory Committee that provides recommendations to the FCC on numbering issues. The NANC Chair website provides information on issues currently being addressed by the NANC.

Alliance for Telecommunications Industry Solutions (ATIS) 
The Industry Numbering Committee (INC) is an industry forum under ATIS addressing and developing solutions for numbering issues. The INC developed the Reassigned Number Database (RND) Guidelines for Service Provider Reporting of Permanently Disconnected Number Data. To obtain the most recent INC guidelines, refer to the Accessing Documents section on the INC Documents page.  

North American Numbering Plan Administrator (NANPA)
The NANPA is responsible for the neutral administration of the North American Numbering Plan (NANP) numbering resources, coordination of Numbering Plan Area (NPA) relief planning and collection of utilization and forecast data.