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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 relief the numbering plan area was divided with several new area codes, including area code 818 and area code 310. Area code 818 entered service on January 7, 1984, [1] making Los Angeles one of the first major cities to be split among multiple area codes. Area code 626 was assigned to a portion of the eastern part on June 14, 1997.
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 ...
0–9. Area codes 209 and 350; Area codes 213, 323, and 738; Area codes 310 and 424; Area codes 408 and 669; Area codes 415 and 628; Area codes 510 and 341
once reserved as a third area code for West Virginia, but it was replaced by a 304-932 exchange area code + exchange number in Charleston; 933: not in use; available for non-geographic assignment easily recognizable code (ERC) 934: New York (Suffolk County on Long Island) July 16, 2016: overlaid on 631; 935: not in use; available for geographic ...
The additional demands for PCS and cellular phone numbers helped necessitate the 831/408 area code split, the 650/415 split, and the earlier 510/415 split. Part of the previous dialing plan included a mass calling prefix for radio station contests, introduced in the 1960s because some contests put unacceptable loads on the Bay Area's telephone ...
Area code 916 was one of the first three original area codes established in California in October 1947. It originally covered most of northeastern California, but area code splits have reduced its coverage to the greater Sacramento area. Area code 279 began service in March 2018 to relieve an exhausted supply of telephone numbers in the 916 ...
Area codes 805 and 820 are telephone area codes in the North American Numbering Plan (NANP) for the U.S. state of California. The numbering plan area (NPA) includes most or all of the counties of San Luis Obispo , Santa Barbara , Ventura , and the southernmost portions of Monterey County . 805 was split from area code 213 in 1957, and area code ...