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Area code 401. Area code 401 is the sole telephone area code in the North American Numbering Plan (NANP) for the U.S. state of Rhode Island. 401 is one of the original North American area codes, which were established in 1947. Area code 401 is not projected to exhaust its supply of vacant central office codes until 2055.
1993: split to create 905. 2001: overlaid by 647. 2013: overlaid by 437. 2025: overlaid by 942. area code 387 is reserved as a fifth code for the region. 417. Missouri (Springfield, Joplin, Branson, Lamar, Lebanon, and most of southwestern Missouri) 1950. created from parts of the area codes 314 and 816.
The state of Oklahoma is served by the following area codes: 405/572: Central Oklahoma including Oklahoma City (original area code created in 1947; 572 added as overlay on April 24, 2021 [1][2][3] 580: Western and southern Oklahoma (split from 405 in 1997) 539/918: Northeastern Oklahoma including Tulsa (918 created in 1953 as split from 405 ...
The blue area is assigned area codes 301, 240, and 227; the red area is area codes 410, 443 and 667. The state of Maryland is served by the following area codes: Area codes. Numbering plan area. 227.
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: [1] 210: San Antonio area; overlays with 726 (November 1, 1992) 214: Dallas area, overlays with 469, 972, and 945 (October 1947)
Zone 1 uses an integrated numbering plan; four digits (1xxx) determine the area served in Canada, the United States and its territories, and much of the Caribbean. Zone 2 uses two 2-digit codes (20, 27) and eight sets of 3-digit codes (21x–26x, 28x, 29x), mostly to serve Africa , but also Aruba , Faroe Islands , Greenland and British Indian ...
Numbering plan areas and area codes since May 2001 September 1997 – May 2001 July 1988 – September 1997 October 1947 – July 1988. Massachusetts is divided into five distinct numbering plan areas (NPAs), which are served by nine area codes in the North American Numbering Plan (NANP), [1] organized as four overlay complexes and a single-area code NPA.
Coordinates: 44.5°N 121°W. Area codes 541 and 458. Area codes 541 and 458 are telephone area codes in the North American Numbering Plan (NANP) for most of the U.S. state of Oregon, excluding only the northwestern corner of the state. The service area includes the cities of Eugene, Springfield, Corvallis, Albany, Medford, Bend, Ashland ...