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  2. Area code 413 - Wikipedia

    en.wikipedia.org/wiki/Area_code_413

    Area code 413 is a telephone area code in the North American Numbering Plan (NANP) for the western third of Massachusetts. It is the largest numbering plan area in ...

  3. National conventions for writing telephone numbers - Wikipedia

    en.wikipedia.org/wiki/National_conventions_for...

    Landline phone numbers begin with the area code, then one digit for the operator code, then six digits for the primary telephone number. Format: (XXX Y ZZZZZZ) where: "xxx" denotes the area code. All area codes begin with the number 0. The operator code for fixed (landline) numbers is "y".

  4. List of country calling codes - Wikipedia

    en.wikipedia.org/wiki/List_of_country_calling_codes

    "Telephone and Internet Country Codes in 10 Languages". LincMad. "World Telephone Numbering Guide". World Telephone Number Guide. Archived from the original on 26 June 2019 "Phone calling codes of all countries with ISO3 and flags + phone codes of cities by countries"

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

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

    1955: split to give New Brunswick its own 506 area code; Newfoundland was added to the service area when it joined Canada in 1949. When 506 was created, Newfoundland was assigned to the new code along with New Brunswick. In 1962, Newfoundland received its own code, 709. 2014: overlaid by 782; 851 reserved as a third area code for the region. 903

  6. North American Numbering Plan - Wikipedia

    en.wikipedia.org/wiki/North_American_Numbering_Plan

    This rounded the total number of digits in a subscriber telephone number to ten: a three-digit area code, three-digit central office code, and four digits for each line. This fixed format defined the North American Numbering Plan as a closed numbering plan , [ 27 ] as opposed to developments in other countries where the number of digits was not ...

  7. 30 Scam Phone Numbers To Block and Area Codes To Avoid - AOL

    www.aol.com/finance/19-dangerous-scam-phone...

    Look at the area code: Start by comparing the phone number’s area code to the list of area codes you should never answer. If it’s on the list, there’s a good chance there’s a scammer on ...

  8. List of Massachusetts area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_Massachusetts_area...

    Massachusetts is divided into five distinct numbering plan areas (NPAs), which are served by nine area codes in the North American Numbering Plan (NANP), [7] organized as four overlay complexes and a single-area code NPA. Eastern Massachusetts has area codes 339, 351, 508, 617, 774, 781, 857, and 978. [8] Western Massachusetts has area code 413 ...

  9. List of mobile telephone prefixes by country - Wikipedia

    en.wikipedia.org/wiki/List_of_mobile_telephone...

    Mobile phones use geographic area codes (two digits): after that, all numbers assigned to mobile service have nine digits, starting with 6, 7, 8 or 9 (example: 55 15 99999–9999). 90 is not possible, because collect calls start with this number.