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In 1947, the American Telephone and Telegraph Company (AT&T) devised the first nationwide telephone numbering plan and assigned the original North American area codes. The state of California was divided into three numbering plan areas (NPAs) with distinct area codes: 213, 415, and 916, for the southern, central, and northern parts of the state ...
In 1956, New Jersey was divided into two numbering plan areas, a northern area which retained the code 201, and a southern area which received the assignment of area code 609. [ 1 ] [ 2 ] [ 3 ] This separated the two population centers (Philadelphia suburbs, and New York City suburbs) into distinct call routing systems for out-of-state long ...
Numbering plan areas and area codes of New Jersey Map of numbering plan area 201/551. Area codes 201 and 551 are telephone area codes in the North American Numbering Plan (NANP) in the U.S. State of New Jersey. Area code 201 was the area code assigned to the entire state of New Jersey in 1947, when the North American area code system was formed.
was authorized as a relief area code in New Jersey, but 862 was used; 357: California (Fresno, Hanford, Madera, Tulare, Visalia, and parts of the San Joaquin Valley) March 26, 2025: to be overlaid on 559; 358-359: not in use; available for geographic assignment 360
Numbering plan areas in California (blue) and border states. This map is clickable; click on any region shown to visit the page for those area codes.
Area codes 213, 323, and 738 are telephone area codes in the North American Numbering Plan (NANP) for the U.S. state of California. They are assigned in an overlay complex to a numbering plan area (NPA) that comprises, roughly, the area of downtown Los Angeles City , as well as several southeast Los Angeles County cities, such as Bell and ...
In addition to being the sole area code in the Space Coast region around the Kennedy Space Center, this is the only partial overlay area code in North America 323: 213: Central Los Angeles, incl. Downtown L.A. and Hollywood: 326: 937: Southwest Ohio: 331: 630: Western suburbs of Chicago: 332, 646 , 917: 212
List of New Jersey area codes; 0–9. Area codes 201 and 551; Area codes 609 and 640; Area codes 732 and 848; Area code 856; Area code 908; Area codes 973 and 862