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New area code Affected NPA Jurisdiction Projected exhaust date Effective date 257: 236/672/778, 604, 250: British Columbia: 2025 – 4th Qtr May 24, 2025: 357: 559: California: 2025 – 3rd Qtr March 26, 2025: 457: 318: Louisiana: 2026 – 1st Qtr September 25, 2025: 471: 662: Mississippi: 2026 – 3rd Qtr TBD 483: 334: Alabama: 2026 – 3rd ...
Created conflicts in area code regions that allowed seven-digit dialling and had been using numbers beginning in 988; a total of 82 area codes switched to ten-digit dialling as a result. 989: Michigan (Alpena, Mt. Pleasant, Bay City, Saginaw, Midland, Owosso, and a part of central Michigan) April 7, 2001: split of 517; 990–999
Lists of North American area codes. 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 .
2023: Poughkeepsie, Middletown, Newburgh, West Point, Goshen and southeastern New York; overlay of 845 332: 2017: New York City: Manhattan only; overlays with 212, 646, and 917 347: 1999: New York City: all except Manhattan; overlays with 718, 917, and 929 363: 2023 Nassau County; overlay of 516 516: 1951 Nassau County; overlaid with 363 as of ...
The state of California was divided into three numbering plan areas (NPAs) with distinct area codes: 213, 415, and 916, for the southern, central, and northern parts of the state, respectively. [1] As of July 2023, California has 38 active area codes. Stockton, Modesto, Merced, Turlock; the northern San Joaquin Valley and the central Sierra ...
Numbering plan areas and area codes of Texas (tan). This is a list of area codes in the U.S. state of Texas. The date of establishment of each area code is indicated in parentheses: 210: San Antonio area; overlays with 726 (November 1, 1992) 214: Dallas area, overlays with 469, 972, and 945 (October 1947)
The original North American area codes were established by the American Telephone and Telegraph Company (AT&T) in 1947, after the demonstration of regional Operator Toll Dialing during the World War II period. The program had the goal of speeding the connecting times for long-distance calling by eliminating intermediary telephone operators.
Since 1 January 2023, geographic location is no longer required to correspond to local area codes. Area code zones of metropolitan France. Area codes are issued by default with the prefix 0 by telephone carriers. The area codes are defined as the second "Z" digit in the dialing encoding pattern E Z AB PQ MCDU.