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] | Effective date |
|---|---|---|---|---|
| 257 | 236/672/778, 604, 250 | British Columbia | 2025 – 4th Qtr | May 24, 2025 |
| 357 | 559 | California | 2025 – 3rd Qtr | March 26, 2025 |
| 457 | 318 | Louisiana | 2026 – 1st Qtr | September 25, 2025 |
| 621 | 713/281/832/346 | Texas | 2025 – 3rd Qtr | January 23, 2025[2] |
| 679 | 313 | Michigan | 2027 – 2nd Qtr | November 7, 2025[3] |
| 729 | 423 | Tennessee | 2025 – 3rd Qtr | March 5, 2025[4] |
| 738 | 213/323 | California | 2026 - 2nd Qtr | November 1, 2024[5] |
| 748 | 970 | Colorado | 2026 – 1st Qtr | July 7, 2025[6] |
| 821 | 864 | South Carolina | 2024 – 3rd Qtr | August 19, 2024[7] |
| 837 | 530 | California | 2025 - 3rd Qtr[8] | January 31, 2025 |
| 924 | 507 | Minnesota | 2025 - 1st Qtr | August 30, 2024[9] |
| 942 | 416/647/437 | Ontario | 2025 – 4th Qtr | April 26, 2025 |
| NPA boundary changes, overlay expansions, etc. | ||||
| 564 | 206 | Washington | 2026 – 1st Qtr | April 5, 2025[10] |
| Undetermined relief method and code | ||||
| unassigned | 334 | Alabama | 2026 – 3rd Qtr | |
| unassigned | 662 | Mississippi | 2026 – 3rd Qtr | |
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The Story of North American Area Codes [] TwoLambdaPlusBlack
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Area codes 512 and 737
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🚛 🚗 The Interstate's Forgotten Code 🚗 🚛
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See also
References
- ^ "NPAs Exhausting in the Next 36 Months" (.xlsx). NANPA. 2015-04-10. Retrieved 10 April 2015.
- ^ "Area Code 621 - Details, official location, official service date, history and time zone".
- ^ "Area Code 679 - Details, official location, official service date, history and time zone". www.areacodehelp.com. Retrieved 2023-11-07.
- ^ "Area Code 729 - Details, official location, official service date, history and time zone". www.areacodehelp.com. Retrieved 2023-11-07.
- ^ "Area Code 738 - Details, official location, official service date, history and time zone". www.areacodehelp.com. Retrieved 2023-11-07.
- ^ https://www.areacodehelp.com/where/area_code_748.shtml
- ^ "Planning Letter PL-606, NPA 821 and 864 All-Services Overlay (South Carolina)" (PDF). NANPA. 2022-11-28. Retrieved 2022-12-02.
- ^ "CPUC Provides More Numbers for 530 Area Code".
- ^ "Area Code 924 - Official Usage, Details, Location, History". www.areacodehelp.com. Retrieved 2023-11-07.
- ^ https://nationalnanpa.com/planning_letters/PL-620.pdf
External links
This page was last edited on 1 April 2024, at 00:22