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List of future North American area codes

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"679 area code" redirects here. For the telephonic country code, see +679.

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.

New area code Affected NPA Jurisdiction Projected exhaust date[1][2] Effective date
257 236/672/778, 604, 250 British Columbia 2025 – 4th Qtr[3] May 24, 2025[4][5]
357 559 California 2025 – 3rd Qtr March 26, 2025[6]
457 318 Louisiana 2026 – 1st Qtr September 25, 2025[7]
471 662 Mississippi 2026 – 3rd Qtr January 30, 2026
483 334 Alabama 2026 – 3rd Qtr February 23, 2026[8][9]
621 713/281/832/346 Texas 2025 – 3rd Qtr January 23, 2025[10][11]
679 313 Michigan 2027 – 2nd Qtr November 7, 2025[12][13]
729 423 Tennessee 2025 – 3rd Qtr March 5, 2025[14][15]
738 213/323 California 2026 – 2nd Qtr November 1, 2024[16][17]
748 970 Colorado 2026 – 1st Qtr July 7, 2025[18][19]
837 530 California 2025 - 3rd Qtr[20] January 31, 2025[21]
942 416/647/437 Ontario 2025 – 4th Qtr[3] April 26, 2025[4][22]
NPA boundary changes, overlay expansions, etc.
564 206 Washington 2026 – 1st Qtr April 5, 2025[23]

Other area codes that are expected to exhaust by the end of 2027 that do not have an approved relief plan: 352, 502, 520, 603, 714/657, 718/347/929, 765 and 949.[24]

See also

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References

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  1. ^ "NPAs Exhausting in the Next 36 Months" (.xlsx). NANPA. 2015-04-10. Retrieved 10 April 2015.
  2. ^ "Planned NPAs Not Yet in Service" (.do). North American Numbering Plan Administrator (NANPA). Retrieved 16 July 2024.
  3. ^ a b "Telecom Decision CRTC 2022-308". Government of Canada – CRTC Archives. Canadian Radio-television and Telecommunications Commission (CRTC). 8 November 2024. Retrieved 16 July 2024.
  4. ^ a b "Telecom Decision CRTC 2023-135". Government of Canada – CRTC Archives. Canadian Radio-television and Telecommunications Commission (CRTC). 10 May 2023. Retrieved 16 July 2024.
  5. ^ "NANPA Planning Letter 612 – NPA 257 to Overlay NPA 236/250/604/672/778" (.pdf). NANPA. 11 May 2023. Retrieved 16 July 2024.
  6. ^ "NANPA Planning Letter 624 – NPA 357 to Overlay NPA 559 (California)" (PDF). NANPA. 6 Feb 2024. Retrieved 16 July 2024.
  7. ^ "NANPA Planning Letter 617 – NPA 457 to Overlay NPA 318 (Louisiana)" (PDF). NANPA. 23 June 2023. Retrieved 16 July 2024.
  8. ^ "NANPA Planning Letter 626 – NPA 483 to Overlay NPA 334 (Alabama)" (PDF). NANPA. 7 May 2024. Retrieved 16 July 2024.
  9. ^ "Area Code 483 - Details, official location, official service date, history and time zone".
  10. ^ "NANPA Planning Letter 623 – NPA 621 to Overlay NPA 281/346/713/832 (Texas)" (PDF). NANPA. 6 December 2023. Retrieved 16 July 2024.
  11. ^ "Area Code 621 - Details, official location, official service date, history and time zone".
  12. ^ "NANPA Planning Letter 618 – NPA 679 to Overlay NPA 313 (Michigan)" (PDF). NANPA. 13 July 2023. Retrieved 16 July 2024.
  13. ^ "Area Code 679 - Details, official location, official service date, history and time zone". www.areacodehelp.com. Retrieved 2023-11-07.
  14. ^ "NANPA Planning Letter 619 – NPA 729 to Overlay NPA 423 (Tennessee)" (PDF). NANPA. 24 July 2023. Retrieved 16 July 2024.
  15. ^ "Area Code 729 - Details, official location, official service date, history and time zone". www.areacodehelp.com. Retrieved 2023-11-07.
  16. ^ "NANPA Planning Letter 614 – NPA 738 to Overlay NPA 213/323 (California)" (PDF). NANPA. 16 May 2023. Retrieved 16 July 2024.
  17. ^ "Area Code 738 - Details, official location, official service date, history and time zone". www.areacodehelp.com. Retrieved 2023-11-07.
  18. ^ "NANPA Planning Letter 625 – NPA 748 to Overlay NPA 970 (Colorado)" (PDF). NANPA. 13 February 2024. Retrieved 16 July 2024.
  19. ^ "Area Code 748 - Details, official location, official service date, history and time zone".
  20. ^ "CPUC Provides More Numbers for 530 Area Code".
  21. ^ "NANPA Planning Letter 621 – NPA 837 and 530 All-Services Overlay (California)" (.pdf). NANPA. 8 August 2023. Retrieved 16 July 2024.
  22. ^ "NANPA Planning Letter 613 – NPA 942 to Overlay NPA 416/437/647 (Toronto, Ontario)" (PDF). NANPA. 11 May 2023. Retrieved 16 July 2024.
  23. ^ "NANPA Planning Letter 620 – NPA 564 to Overlay NPA 206 (Washington)" (PDF). NANPA. 3 August 2023. Retrieved 16 July 2024.
  24. ^ "2024-1 NRUF and NPA Exhaust Analysis" (PDF). NANPA. Retrieved 16 July 2024.
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