ATIS Telecom Glossary
Tuesday, September 02, 2014

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North American Number Plan (NANP)
A plan for the allocation of unique 10-digit address numbers. The numbers consists of a 3-digit area (numbering plan area) code, a 3-digit office code, and a 4-digit line number. The plan also extends to format variations (e.g., 3-digit and 7-digit address), prefixes (e.g. , 1, 0, 01, and 011), and special code applications (e.g., service access codes). [T1.104-1988]

 

 

 

 

 

 

 

 

 

 



 
These definitions were prepared by ATIS Committee PRQC
 
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