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On March 19, 1983, the numbering plan area was divided: the immediate Houston area retained 713, while the northern, eastern and western portions became area code 409. On November 2, 1996, area code 713 was split, with most of Houston's suburbs switching to 281. The dividing line roughly followed Beltway 8. Generally, most of Houston itself and ...
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)
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.
Telephone numbers listed in 1920 in New York City having three-letter exchange prefixes. In the United States, the most-populous cities, such as New York City, Philadelphia, Boston, and Chicago, initially implemented dial service with telephone numbers consisting of three letters and four digits (3L-4N) according to a system developed by W. G. Blauvelt of AT&T in 1917. [1]
An area code overlay is a numbering plan area (NPA) in the North American Numbering Plan (NANP) that has multiple area codes assigned. Overlay complexes are used to add central office prefixes in an NPA to increase the number of available telephone numbers. [1]
Area codes 210 and 726; Area codes 214, 469, 972, and 945; Area code 254; Area codes 713, 281, 832, and 346; Area code 325; Area code 361; Area code 409; Area code 432; Area codes 512 and 737; Area code 806; Area codes 817 and 682; Area code 830; Area codes 903 and 430; Area code 915; Area code 936; Area code 940; Area code 956; Area code 979
Numbering plan areas and area codes of Texas with numbering plan area 936 highlighted. North American area code 936 is a state of Texas telephone area code for numbers in the Nacogdoches-Huntsville area, as well as a few outer portions of the Houston metropolitan area. It was created February 19, 2000, in a code-split from area code 409.
Area code 979 is a telephone area code in the North American Numbering Plan (NANP) for the U.S. state of Texas. The numbering plan area comprises the region generally following the Brazos River found between the Austin and Houston metro areas and its surrounding communities, stretching from just south of Waco to the Gulf Coast. It was created ...