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All California telephone Area Code maps are now using the SVG file format due to the regular need for changes, the older PNG image format maps have been deprecated and will no longer be maintained, changed, corrected or updated when new area codes are added to California or to states bordering California.
An area code overlay is a numbering plan area (NPA) in the North American Numbering Plan (NANP) that has multiple area codes assigned. Overlay complexes are used to add central office prefixes in an NPA to increase the number of available telephone numbers .
A numbering plan area with multiple area codes is called an overlay. Area codes are also assigned for non-geographic purposes. The rules for numbering NPAs do not permit the digits 0 and 1 in the leading position. [1] Area codes with two identical trailing digits are easily recognizable codes (ERC).
In telecommunications, an area code overlay complex is a telephone numbering plan that assigns multiple area codes to the same geographic numbering plan area (NPA). Area code overlays are implemented in territories of the North American Numbering Plan (NANP) to mitigate exhaustion of central office codes in growth areas. The method has been in ...
Area code 252; Area code 828; Area codes 336 and 743; Area codes 704 and 980; Area codes 910 and 472; Area codes 919 and 984; List of North Carolina area codes; Wikipedia:Graphics Lab/Map workshop/Archive/2017/May 2017; Wikipedia:Graphics Lab/Map workshop/Archive/Jan 2023
Note: This template should only be edited when a new area code, existing area code(s) is/are merged into an overlay, or a new country, is added to the North American Numbering Plan. This page is called by template Area code box to include the particular area code(s) used by a specific Caribbean Country, Canadian Province, or U.S. State. This ...
Schematic map showing (in red) geographical area of District of Columbia serving area codes 202/771 and surrounding areas in Maryland 240/227/301 and Virginia 571/703 US area codes. This has been updated to cover latest area code information for DC, Maryland and Virginia adjacent area codes as of 2023-06-28. Date: 2 November 2008: Source
The U.S. state of Washington has six telephone area codes. The state initially used a single area code until it was divided in 1957 with the creation of area code 509 to serve Eastern Washington. In 1995, 206 was split again to serve just the Puget Sound region after area code 360 was created for the remainder of Western Washington.