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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.
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.
Each has since been recognized as distinct numbering plan areas and area code 809 exclusively serves the Dominican Republic (along with area codes 829 and 849). The United States Pacific territories of the Northern Mariana Islands and Guam joined the NANP in 1997, and American Samoa became an NANP member in October 2004. The Dutch possession of ...
Contact us; Contribute Help; ... Download QR code; Print/export Download as PDF; ... Area codes in Idaho (1 P) Area codes in Illinois (12 P)
In California and New York, because of the existence of both overlay area codes (where an area code must be dialed for every call) and non-overlay area codes (where an area code is dialed only for calls outside the subscriber's home area code), "permissive home area code dialing" of 1 + the area code within the same area code, even if no area ...
To find out the 25 poorest and richest area codes, GOBankingRates used the 2015 Census Community Survey, the most recent data available, to rank cities across the nation in order of mean household ...
Area code 484; Personal communications service (NANP) Area code 501; Area code 502; Area codes 503 and 971; Area code 504; Area code 505; Area codes 507 and 924; Area codes 508 and 774; Area code 509; Area codes 510 and 341; Area codes 512 and 737; Area codes 513 and 283; Area code 515; Area codes 516 and 363; Area code 517; Area codes 518 and ...
NPA-911 is forbidden as 9-1-1 is an emergency telephone number. (This is less restrictive than the rules prohibiting all three-digit N-1-1 codes as exchanges in all geographic area codes.) NPA-555 is reserved in every toll-free area code (except 800) for future information or directory assistance applications