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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. 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.
State of California - Official website; California State Government Organization Archived 2010-10-06 at the Wayback Machine - Chart showing a hierarchy of the above departments and commissions
Print/export Download as PDF ... to the United States House of Representatives and passes it to a formatting template. ... Invalid California congressional district ...
Where there is a page listing all area codes for that state or country, each area code listed on it should point back to the state's area code list page. If there is only one area code for the country or state, then it is placed on that area code page, e.g. [[Area code 302|Delaware]] .
On February 21, 2015, the numbering plan area was transitioned to an overlay plan by adding area code 628 to the same service area for new numbers, [9] making ten-digit dialing mandatory in the area, with eleven-digit dialing necessary from landlines. [10]
Quick Take: List of Scam Area Codes. More than 300 area codes exist in the United States alone which is a target-rich environment for phone scammers.
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On June 30, 1998, the NANPA approved a request by the California Public Utilities Commission for a two-phase three-way split of 619 such that the first phase would introduce the new 858 area code to northwest San Diego County on June 12, 1999, after which the southern and eastern parts of the county would be split off into a new 935 area code ...