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Area code 603 in a 1956 map, covering the whole state. Area code 603 is the sole area code for the U.S. state of ... area code 603 had telephone numbers assigned for ...
Numbering plan areas in California (blue) and border states. This map is clickable; click on any region shown to visit the page for those area codes. In 1947, the American Telephone and Telegraph Company (AT&T) devised the first nationwide telephone numbering plan and assigned the original North American area codes.
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. A numbering plan area with multiple area codes is called an overlay. Area codes are also assigned for non-geographic purposes.
Oct. 31—CONCORD — Facing a need for another as soon as 2027, state officials are mobilizing to keep 603 as New Hampshire's only area code while warning of the disruptions a second area code ...
A phone number communicates a lot --and if you dig a little deep, an area code contains information about the economic situation of its residents, too. Richest and poorest area codes in the US ...
Area codes 541 and 458 are telephone area codes in the North ... 603 Eugene: Lane: June 10, 2008 ... Central office prefixes in area code 458 [6] Prefix Location ...
A phone number communicates a lot --and if you dig a little deep, an area code contains information about the economic situation of its residents, too. Richest and poorest area codes in the US ...
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.