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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).
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.
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 ...
If another area code borders on more than one direction put it in multiple directions. If an area code borders on an odd direction such as northwest, code both N=and W=. To make them clickable links, include the description surrounded by link brackets, e.g. if the area code to the north of this area code is 710, you'd code N=[[Area code 710]].
Add three new area codes including a third overlay on 213/323 among other changes. 16:29, 15 December 2021: 491 × 672 (76 KB) Rfc1394: Add CSS to make future changes easier: 21:21, 15 July 2021: 491 × 672 (82 KB) CapitalSasha: correcting area code 828 -> area code 628: 22:21, 29 August 2019: 491 × 672 (82 KB) Rfc1394: add new area codes: 12: ...
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
This macro is placed on the primary listing page for all the area codes in each state or country in the North American Numbering Plan. If there is more than one area code for a state, it should link the state to a page such as [[List of Idaho area codes|Idaho]]. Where there is a page listing all area codes for that state or country, each area ...