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Format. NYX NXX-XXXX. Access codes. Country code. 1. International access. 011. List of dialing codes. The North American Numbering Plan ( NANP) is a telephone numbering plan for twenty-five regions in twenty countries, primarily in North America and the Caribbean.
The formatting convention for telephone numbers is (NPA) NXX-XXXX, where NPA is the three-digit area code, and NXX-XXXX is the seven-digit subscriber number. NPA has the same syntax of NXX since the implementation of interchangeable area codes in 1995.
Jul 14, 2005 · North American phone numbers are in the format (where N is any digit from 2-9, and X from 0-9): NPA-NXX-XXXX. Specifically: NPA identifies the 3-digit Numbering Plan Area (Area Code) NXX identifies the Central Office (aka. Exchange) within the NPA. XXXX identifies the Station within the NXX.
Feb 1, 2024 · Integration into the 10-Digit Numbering Format: The standard telephone number under the NANP comprises ten digits, segmented into three parts: the area code (NPA), the central office code (NXX), and the line number. The area code identifies a broader geographic region, while the NXX narrows it to a specific central office.
The format of an area code is NXX, where N is any digit 2 through 9 and X is any digit 0 through 9. Initially, the middle digit of an area code had to be "0" or "1". When this restriction was removed in 1995, additional area code combinations became available. There are 800 possible combinations associated with the NXX format.
Jul 27, 2018 · Combined, the area code, office code and station number serve as the destination routing address in the public switched telephone network (PSTN). This format is often represented as NPA-NXX-XXXX where NPA is the Numbering Plan Area, NXX is the Central Office within the NPA, and XXXX is the Station.
North American NPA NXX Lookup Enter any United States, Canadian, or Caribbean telephone number, including area code, to look up details about the exchange. Lookup Number
