This plan is responsible for assigning the area codes and routing calls throughout North America.
The numbering plan used in the United States, Canada, Bermuda, Puerto Rico, and certain Caribbean Islands. The NANP format is a 10-digit number that consists of a 3-digit NPA code (Area Code), 3-digit NXX code (Exchange), and 4-digit code (Line).
also known as NPA. Refers to the assignment and management of the area code system for North America. Administered by Bellcore, presently being expanded due to high demand for new numbers and services, requiring new area codes. Numbering sequence being changed from traditional N 1/0 X area code (center digit a 1 or a 0) to NNX, where N = numbers 1 to 9 and X = any number.
The process for assigning 10-digit (3+3+4) North American telephone numbers. Developed by the Bell System.
The numbering architecture in which every station in an NANP area is identified by a unique 10-digit address consisting of a three-digit area code, a three-digit central office code, and a four-digit subscriber number.
The system that the traditional phone networks use for routing calls based on the telephone number dialed.
The North American Numbering Plan (NANP) is an integrated telephone numbering plan of 24 countries and territories: the United States and its territories, Canada, Bermuda, and 16 Caribbean nations. It is a system of three-digit area codes and seven-digit telephone numbers that direct telephone calls to particular regions on a public switched telephone network (PSTN), where they are further routed by the local network.
