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  2. Area codes 610, 484, and 835 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_610,_484,_and_835

    Area code 835 was eventually approved by the Public Utility Commission on December 2, 2021. Assignment of central office codes in the new area code began on September 2, 2022. [4] When area codes were introduced in 1947, their middle digit was either 0 or 1. In 1994, area code 610 was the last area code assigned with digit 1 in that position.

  3. List of Pennsylvania area codes - Wikipedia

    en.wikipedia.org/.../List_of_Pennsylvania_area_codes

    This is a list of telephone area codes of Pennsylvania. In 1947, the American Telephone and Telegraph Company divided Pennsylvania into four numbering plan areas (NPAs) and assigned distinct area codes for each. Since 1995, several relief actions in form of area code splits and overlays have expanded the list of area

  4. 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

  5. Area code 610 - Wikipedia

    en.wikipedia.org/?title=Area_code_610&redirect=no

    Area codes in the United States This page was last edited on 15 July 2022, at 05:00 (UTC) . Text is available under the Creative Commons Attribution-ShareAlike 4.0 License ; additional terms may apply.

  6. Lehigh County, Pennsylvania - Wikipedia

    en.wikipedia.org/wiki/Lehigh_County,_Pennsylvania

    Today, Lehigh County is covered largely by the 610 area code. An overlay area code, 484, was added to the 610 service area in 1999. [32] A plan to introduce area code 835 as an additional overlay was rescinded in 2001. It has since been reintroduced and will begin use once 610 and 484 extensions are exhausted, possibly as early as September ...

  7. List of Massachusetts area codes - Wikipedia

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

    Numbering plan areas and area codes since May 2001 September 1997 [1] – May 2001 [2] July 1988 [3] – September 1997 [4] [5] October 1947 – July 1988 [6]. 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.

  8. Area codes 617 and 857 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_617_and_857

    Some mobile telephone numbers from the 1990s assigned to communities in the area surrounding 617 (which is now the 781 area code) kept the 617 area code after the split. Area code 508 was split from 617 on July 16, 1988. Area code 978 subsequently split from 508 on September 1, 1997. Area code 781 was split from 617 on September 1, 1997.

  9. List of California area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_California_area_codes

    Numbering plan areas in California (blue) and border states. This map is clickable; click on any region shown to visit the page for those area codes. In 1947, the American Telephone and Telegraph Company (AT&T) devised the first nationwide telephone numbering plan and assigned the original North American area codes.