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- The first three digits of a local seven-digit telephone number. Assigned to a specific switch in a central office. Together, the NPA-NXX denotes the original carrier and central office switch assigned to a particular number.
trestleiq.com › knowledge-base › understanding-npa-nxx-and-the-implications-of-number-portabilityUnderstanding NPA-NXX and the Implications of Number Portability
Oct 30, 2023 · NPA and NXX are standard industry terms that you may hear thrown around a lot when ordering or porting phone numbers. What is NPA? NPA stands for Numbering Plan Area. It's often used interchangeably with the area code, which is a three-digit number that identifies the phone service region.
Feb 28, 2024 · What is NPA-NXX? # NPA (Numbering Plan Area) # Commonly known as the area code. Represents a specific geographic area. Originally, NPA codes were assigned based on the population density of an area, with areas having larger populations getting numbers that were quicker to dial on rotary phones. NXX (Central Office Code) #
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.
Lookup any area code by area code, prefix, city, state, zip code, county or any of the fields shown above. Only one field needs to be entered but you can filter the results by entering information in additional fields. Area Code Lookup. Search by NPA NXX, ZIP Code, City, State, or any other of our data fields.
This lookup uses the North American NPA NXX Wire Center Edition Database and supplemental data to find the Wire Center, Rate Center, locality, LATA, carrier, and other details associated with any United States or Canadian NPA NXX combination.
Area Code and Prefix Lookup. Area Code & Prefix Lookup by Location. Click on the map or enter a United States, Canadian, or Caribbean address, city state, province or similar location to find the telephone area codes and prefixes for the area. Find all NPA NXX used in geographic area.
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.
