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The North American Numbering Plan (NANP) divides the territories of its members into geographic numbering plan areas (NPAs). Each 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.
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. Original North American area codes
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. [1]
In 1947, AT&T completed the new design for a nationwide toll network that established the original North American area codes. The new numbering plan provided for 152 area codes, each with a capacity to serve as many as 540 central offices. [28] Originally, only eighty-six area codes were assigned.
Quick Take: List of Scam Area Codes. More than 300 area codes exist in the United States alone which is a target-rich environment for phone scammers.
Area codes in North Dakota (1 P) O. Area codes in Ohio (9 P) Area codes in Oklahoma (4 P) Area codes in Oregon (4 P) P. Area codes in Pennsylvania (11 P) R.
This is a list of future area codes in the North American Numbering Plan (NANP) that are in the planning stages for relief of central office code exhaustion in the given numbering plan areas (NPAs). The dates are subject to change during implementation as published in the official NANP Administrator Planning Letters.
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 ...