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      • There are 317 geographic area codes in the United States and an additional 18 non-geographic area codes totalling 335 US area codes. What's confusing to people not familiar with the North American Numbering Plan is that many countries share the +1 prefix, whereas most countries around the world have their own country calling code.
      www.twilio.com/docs/glossary/north-american-area-codes
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  2. How many area codes are there in the United States? An area code denotes the regional location of a phone number within the United States. Currently, there are around 320 area codes, including overlays, in the USA according to the North American Numbering Plan (NANP).

    • 203, 860, 475, 959
    • 339, 351, 413, 508, 617, 774, 781, 857, 978
    • 207
    • 603
  3. On January 1, 1947, the first North American area codes were issued in regions where standard 7 digit dialing codes were scheduled to be exhaused the soonest. By adding a 3 digit prefix to a 7 digit local number, this allowed for hundreds of millons of new phone numbers to be issued.

    States
    Area Codes
    205, 251, 256, 334
    479, 501, 870
    480, 520, 602, 623, 928
  4. Dec 07, 2020 · An area code denotes the regional location of a phone number within the United States. Currently, there are around 320 area codes, including overlays, in the USA according to the North American Numbering Plan (NANP). However, this count is by no means constant.

  5. There are 317 geographic area codes in the United States and an additional 18 non-geographic area codes totalling 335 US area codes. What's confusing to people not familiar with the North American Numbering Plan is that many countries share the +1 prefix, whereas most countries around the world have their own country calling code .

  6. Area Code Listing & Area Code Lookup. The complete list of all valid area codes in North America, including Canada — Updated Daily!

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