This is a list of future area codes in the North American Numbering Plan, which are intended to be used as needed for additional telephone numbers in various locations. Relief formats are subject to change.
| Area code | State/Province | Affected area codes | Format | Effective date |
|---|---|---|---|---|
| 227 | Maryland | 240, 301 | Overlay | None |
| 236 | British Columbia | 778 | TBD | None |
| 249 | Ontario | 705 | Overlay | March 19, 2011 |
| 274 | Wisconsin | 920 | Overlay | March 10, 2010 |
| 283 | Ohio | 513 | Overlay | None |
| 341 | California | 510 | Overlay | None |
| 343 | Ontario | 613 | Overlay | May 17, 2010 |
| 364 | Kentucky | 270 | Split | October 29, 2011 |
| 369 | California | 707 | Split (3 way) | None |
| 380 | Ohio | 614 | Overlay | None |
| 447 | Illinois | 217 | Overlay | None |
| 458 | Oregon | 541 | Overlay | February 10, 2010[1] |
| 464 | Illinois | 708 | Overlay | None |
| 470 | Georgia | 678, 404, 770[2] | Multiple overlay | None |
| 531 | Nebraska | 402 | Overlay | March 26, 2011 |
| 534 | Wisconsin | 715 | Overlay | August 14, 2010 |
| 557 | Missouri | 314 | Overlay | None |
| 564 | Washington | 360 | Multiple overlay | None |
| 579 | Quebec | 450 | Overlay | August 21, 2010 |
| 627 | California | 707 | Split (3 way) | None |
| 628 | California | 415 | Overlay | None |
| 659 | Alabama | 205 | Overlay | None |
| 667 | Maryland | 443 | Overlay | None |
| 669 | California | 408 | Overlay | None |
| 679 | Michigan | 313 | Overlay | None |
| 689 | Florida | 407 | Overlay | None |
| 721 | Sint Maarten | None[3] | New addition | May 31, 2010[4] |
| 730 | Illinois | 618 | Overlay | None |
| 737 | Texas | 512 | Overlay | None |
| 764 | California | 650 | Overlay | None |
| 825 | Alberta | 587 | TBD | None |
| 935 | California | 619 | Overlay | None |
| 938 | Alabama | 256 | Overlay | July 10, 2010[5] |
| 959 | Connecticut | 860 | Overlay | None |
| 975 | Missouri | 816 | Overlay | None |
| 984 | North Carolina | 919 | Overlay | None |
See also
Notes and references
- ^ Oregon gets new area code: 458
- ^ Area codes 404 and 770 are distinct and border one another. Area code 678 was added as an overlay of both of them, and 470 would be an overlay of 678.
- ^ Sint Maarten is not currently part of the North American Numbering Plan; it uses country code 599 along with the rest of the Netherlands Antilles.
- ^ "PL-396: Introduction of NPA 721 (Sint Maarten, Netherlands Antilles)". North American Numbering Plan Administration. 2009-10-02. http://www.nanpa.com/pdf/PL_396.pdf. Retrieved 2009-10-23.
- ^ 938 Coming in 2 years
External links
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