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  2. Area codes 713, 281, 832, and 346 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_713,_281,_832...

    On January 16, 1999, the 713/281 boundary was removed, creating an overlay for the combined area, while simultaneously adding a third area code to the entire region, 832. As a result, ten-digit dialing became required for all calls in the Houston area. On May 9, 2013, the Public Utility Commission of Texas (PUC) announced the addition of yet ...

  3. List of Texas area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_Texas_area_codes

    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)

  4. List of North American Numbering Plan area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_North_American...

    overlaid on 713, 281, and 832; 347: New York (New York City: The Bronx, ... area code 387 is reserved as a fifth code for the region; 438: Quebec (Montreal ...

  5. List of future North American area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_future_North...

    This is a list of future area codes in the North American Numbering Plan (NANP) that are in the planning stages for relief of central office code exhaustion in the given numbering plan areas (NPAs). The dates are subject to change during implementation as published in the official NANP Administrator Planning Letters .

  6. Area codes 512 and 737 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_512_and_737

    Area code 512 was one of the original area codes established in October 1947. At that time it covered most of ... 432, 512/737, 713/281/832/346, 806, 817/682, 830 ...

  7. List of California area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_California_area_codes

    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.

  8. Toll-free telephone numbers in the North American Numbering ...

    en.wikipedia.org/wiki/Toll-free_telephone...

    Toll-free telephone numbers in the North American Numbering Plan have the area code prefix 800, 833, 844, 855, 866, 877, and 888. Additionally, area codes 822, 880 through 887, and 889 are reserved for toll-free use in the future. 811 is excluded because it is a special dialing code in the group NXX for various other purposes.

  9. Area code 830 - Wikipedia

    en.wikipedia.org/wiki/Area_code_830

    Numbering plan areas and area codes of Texas with numbering plan area 830 highlighted. Area code 830 is the telephone area code in the North American Numbering Plan (NANP) for the Texas Hill Country and most of San Antonio's suburbs. It completely surrounds area codes 210 and 726, which serve most of San Antonio itself along with its innermost ...