North American Numbering Plan - Wikipedia
WEBThe North American Numbering Plan (NANP) is a telephone numbering plan for twenty-five regions in twenty countries, primarily in North America and the Caribbean. This group is historically known as World Zone 1 and has the telephone country code 1 .
List of North American Numbering Plan area codes - Wikipedia
WEBEach NPA is identified by one or more numbering plan area codes (NPA codes, or area codes), consisting of three digits that are prefixed to each local telephone number having seven digits. A numbering plan area with multiple area codes is called an overlay. Area codes are also assigned for non-geographic purposes.
North American Numbering Plan - Wikiwand
WEBThe North American Numbering Plan ( NANP) is a telephone numbering plan for twenty-five regions in twenty countries, primarily in North America and the Caribbean. This group is historically known as World Zone 1 and has the telephone country code 1. Some North American countries, most notably Mexico, do not participate with the NANP.
List of North American Numbering Plan area codes
WEBThis is a list of North American telephone area codes in effect for the North American Numbering Plan (NANP). The area to which an area code is officially assigned is known as a Numbering Plan Area (NPA). An area code is part of a telephone number in the United States, Canada, and the Caribbean.
North American Numbering Plan - Simple English Wikipedia, …
WEBThe North American Numbering Plan (NANP) is a telephone numbering plan. It includes 24 countries and territories, including the United States, Canada, Bermuda, and 17 nations of the Caribbean. There are three-digit area codes and seven-digit telephone numbers. Related pages. List of North American Numbering Plan area codes
Original North American area codes - Wikipedia
WEBA fundamental requirement for the success of automated toll dialing was a new telephone numbering plan, which became known as the Nationwide Numbering Plan. This numbering plan accounted initially for seventy-seven area …
Telephone numbering plan - Wikipedia
WEBA closed numbering plan, as found in North America, features fixed-length area codes and local numbers, while an open numbering plan has a variance in the length of the area code, local number, or both of a telephone number assigned to a subscriber line. The latter type developed predominantly in Europe.
NANPA : North American Numbering Plan Administrator
WEBThis site provides information about the North American Numbering Plan (NANP) and its administration. The NANP is the numbering plan for the Public Switched Telephone Network for Canada, the US and its territories, and some Caribbean countries.
NANPA : North American Numbering Plan Adminstration
WEBThe North American Numbering Plan (NANP) is an integrated telephone numbering plan serving 20 North American countries that share its resources.
NANPA : North American Numbering Plan Adminstration
WEBThe North American Numbering Plan (NANP) is an integrated telephone numbering plan serving 20 North American countries that share its resources.
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