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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 ...
On October 20, 2011, the California Public Utilities Commission confirmed implementing 669 as an overlay to the existing 408 numbering plan area, [6] the first in the San Francisco Bay Area. The new area code's official in-service date was November 20, 2012, when new central office codes could be activated.
Area codes 415 and 628 are telephone area codes in the North American Numbering Plan (NANP) for the city of San Francisco and its northern suburbs in Marin County (across the Golden Gate), and the northeast corner of San Mateo County in the U.S. state of California. Area code 415 was one of the eighty-six original North American area codes ...
Although the original purpose for the number was for the Social Security Administration to track individuals, [1] the Social Security number has become a de facto national identification number for taxation and other purposes. [2] A Social Security number may be obtained by applying on Form SS-5, Application for a Social Security Number Card. [3]
ZIP codes: 94109, 94133. ... The Search for Spock was located in the Russian Hill area of San Francisco. ... List of San Francisco, California Hills;
Area code 650 is a telephone area code in the North American Numbering Plan (NANP) for the San Francisco Bay Area in the U.S. state of California. It was split from area code 415 on August 2, 1997, and includes most of San Mateo County (except the northernmost portion), part of San Francisco , and the northwestern portion of Santa Clara County ...
This included most of Southern California, generally south and east of Los Angeles, extending to the Arizona and Nevada state lines to the east, and south as far as the Mexican border (what is now area codes 442/760, 619, 858, 909, and 951). Despite Southern California's growth in the second half of the 20th century, this configuration remained ...
This map is clickable; click on any region shown to visit the page for those area codes.Area code 530 is shown in red. Area codes 530 and 837 are telephone area codes in the North American Numbering Plan (NANP) in northeastern and Northern California. 530 was created in 1997 in an area code split of 916 and 837 was added to the same numbering ...