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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). NPAs with 9 in the second position are reserved for future format expansion.
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To use this template, use {{NANPA area code map|Map=ST}} where ST is the 2-character US state abbreviation, e.g. CA, DC, NY, VA etc. This generates a link to the appropriate area code map at the NANPA website. Example: {{NANPA area code map|Map=CA}} NANPA area code map of California
Download as PDF; Printable version; In other projects ... This map is clickable; click on any region shown to visit the page for those area codes.
Numbering plan areas and area codes since May 2001 September 1997 [1] – May 2001 [2] July 1988 [3] – September 1997 [4] [5] October 1947 – July 1988 [6]. Massachusetts is divided into five distinct numbering plan areas (NPAs), which are served by nine area codes in the North American Numbering Plan (NANP), [7] organized as four overlay complexes and a single-area code NPA.
Print/export Download as PDF; Printable version; In other projects ... Pages in category "Lists of United States area codes" The following 52 pages are in this ...
The largest telephone numbering plan in North American is the North American Numbering Plan (NANP), serving 25 regions or countries. Other countries maintain an autonomous numbering plan with distinct country codes within the international E.164 specifications by the International Telecommunication Union.