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In 1954, most of Tarrant County was combined with much of the eastern region of area code 915 to form area code 817. Despite the growth of the Dallas metropolitan area in the second half of the 20th century, this configuration remained in place for thirty six years. In 1990, the entire eastern portion of the 214 area was split off with area ...
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)
1999: 214 and 972 were merged and overlaid with 469; ... area code 387 is reserved as a fifth code for the region; 438: Quebec (Montreal metropolitan area) November 4 ...
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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.
An area code overlay is a numbering plan area (NPA) ... 214: Eastern portion of the Dallas–Fort Worth metroplex in and around Dallas, Texas: 470, 678:
The numbering plan area begins just north and east of the Dallas–Fort Worth metroplex, and extends to the Oklahoma, Arkansas, and Louisiana state borders. Area code 903 was created November 4, 1990 in a split of area code 214. Area code 430 was assigned to the same service area on February 15, 2003 in creation of an overlay. Before October 18 ...
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.