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Each NPA is identified by one or more numbering plan area codes ( NPA codes, or area codes ), consisting of three digits that are prefixed to each local telephone number having seven digits. A numbering plan area with multiple area codes is called an overlay. Area codes are also assigned for non-geographic purposes.
Lists of North American area codes. The largest telephone numbering plan in North American is the North American Numbering Plan (NANP), serving 25 regions or countries.
Area codes 314 and 557. Coordinates: 38°37′N 90°13′W. Area codes 314 and 557 are telephone area codes in the North American Numbering Plan (NANP) in the U.S. state of Missouri, serving the city of St. Louis and most of its inner-ring suburbs in neighboring St. Louis County.
North Carolina Area Codes. Area codes 704 and 980 are telephone area codes in the North American Numbering Plan (NANP) for Charlotte and all or part of 12 surrounding counties in south-central North Carolina. Other major cities in the service area are Gastonia, Kannapolis, Concord, Mooresville, Salisbury, Statesville, and Shelby.
This is a list of the area codes in the state of Illinois and its numbering plan areas in the North American Numbering Plan.. All NPAs within Illinois. 217/447: Central Illinois, including the region running west from the Illinois-Indiana border through Danville, Effingham, Champaign–Urbana, Decatur, Springfield, Quincy until Illinois' western border with Missouri and Iowa.
Area code 719. Clickable map of Colorado area codes in blue (with bordering states). [1] Area code 719 is a telephone area code in the North American Numbering Plan (NANP) for the U.S. state of Colorado.
List of Florida area codes. This is a list of area codes in the U.S. state of Florida . When the original North American area codes were introduced for a nationwide telephone numbering plan in 1947, the entire state was a single numbering plan area (NPA) with area code 305.
Area codes 920 and 274 are telephone area codes in the North American Numbering Plan (NANP) for a large area of eastern Wisconsin. Area code 920 was created on July 26, 1997, in a split of area code 414, one of the original North American area codes of 1947. 274 was added to the same numbering plan area (NPA) on May 5, 2023 to create an area ...
Interactive map of the numbering plan areas of the Commonwealth of Pennsylvania (blue). This is a list of telephone area codes of Pennsylvania . In 1947, the American Telephone and Telegraph Company divided Pennsylvania into four numbering plan areas (NPAs) and assigned distinct area codes for each.
Clickable map of Colorado area codes in blue (with bordering states). The U.S. state of Colorado is served by five telephone area codes of the North American Numbering Plan (NANP). Area code 303 is the original area code assigned to the entire state when the first nationwide telephone numbering plan was created in 1947.