List of future North American area codes
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 | Effective date |
|---|---|---|---|---|
| 457 | 318 | Louisiana | 2026 – 1st Qtr | September 25, 2025 |
| 465 | 347/718/917/929 | New York | 2026 – 4th Qtr | June 18, 2026 |
| 471 | 662 | Mississippi | 2026 – 3rd Qtr | January 30, 2026 |
| 483 | 334 | Alabama | 2026 – 3rd Qtr | February 23, 2026 |
| 565 | 912 | Georgia | 2028 – 2nd Qtr | TBA |
| 679 | 313 | Michigan | 2027 – 2nd Qtr | November 7, 2025 |
| 729 | 423 | Tennessee | 2025 – 3rd Qtr | September 5, 2025 |
| 748 | 970 | Colorado | 2026 – 1st Qtr | July 7, 2025 |
| NPA boundary changes, overlay expansions, etc. | ||||
Other area codes that are expected to exhaust by the end of 2027 and do not have an approved relief plan: 352, 502, 520, 603, 714/657, 718/347/929, 765 and 949.