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In 2016, area code 614 was overlaid with 380 in the Columbus/Central Ohio area for the same reason. In 2020, 326 was added as an all services overlay for 937. Area code 283 was added as an overlay for 513 on April 28, 2023. Area code 436 went into service on March 1, 2024, as an overlay of 440. References
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.
Area codes in the United States. For convenience, all U.S. area codes should be included in this category. This includes all area codes that can also be found in the subcategories. This category lists the telephone area codes in the United States .
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 614 and 380. Coordinates: 40°N 83°W. The regions shown in blue are in Ohio. Area codes 614 and 380 are telephone area codes in the North American Numbering Plan (NANP) for all or part of four counties in central Ohio, surrounding and including the state capital of Columbus.
Area codes 713, 281, 832, and 346 are telephone area codes in the North American Numbering Plan (NANP) forming an overlay complex for Houston, Texas and its environs. Area code 713 is one of the original four area codes established for Texas in 1947.
Area codes 440 and 436 are telephone area codes in the North American Numbering Plan (NANP) for the U.S. state of Ohio, serving the parts of the Greater Cleveland area, surrounding the city of Cleveland, but not the city and most of its inner suburbs.
The original configuration of the North American Numbering Plan assigned eighty-six area codes in October 1947, one each to every numbering plan area. The territories of the United States, which included Alaska, and Hawaii, did not receive area codes at first, nor did the territories of Canada or Newfoundland and Labrador, which was a British ...
Area codes 740 and 220. Coordinates: 39°0′0″N 82°30′0″W. The regions shown in blue are in Ohio. Area codes 740 and 220 are telephone area codes in the North American Numbering Plan (NANP) for the southeastern and central parts of Ohio. The numbering plan area (NPA) includes the cities of Athens, Belpre, Cadiz, Chillicothe, Circleville ...
Area code 904 was created in an area code split of area code 305 in 1965. In 2024, the numbering plan received a second area code, 324, through the creation of an overlay complex to mitigate central office code exhaustion and provide additional telephone numbers in the area.