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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 New Hampshire in the North American Numbering Plan (NANP). It was created as one of the original 86 numbering plan areas in October 1947.
2 Area codes by country, state, province, and regions. ... 2023: recombined with 480 and 623 into an overlay complex for the Phoenix metropolitan area; 603:
Area code: 603: FIPS code: 33-77300: GNIS feature ID: 2629742: Troy is a census-designated place (CDP) and the main village in the town of Troy in Cheshire County ...
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.
Area code 541 was created in an area code split from area code 503 on ... 603 Eugene: Lane: June 10, 2008 604 ... NANPA area code map of Oregon ; Oregon area codes ...
Interactive map of the numbering plan areas of the Commonwealth of Pennsylvania (blue). This is a list of telephone area codes of Pennsylvania.. In 1947, the American Telephone and Telegraph Company divided Pennsylvania into four numbering plan areas (NPAs) and assigned distinct area codes for each.
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 ...
Area code map for Wisconsin. The U.S. state of Wisconsin is serviced in five distinct numbering plan areas (NPAs) with the following area codes of the North American Numbering Plan (NANP). Area codes 414 and 715 were among the original North American area codes assigned in 1947.