The following Numbering Plan Area (NPA) Relief Activity Schedule is based on planning letters received from the North American Numbering Plan Administrator (NANPA).
|
NPA Relief Activity Schedule |
||||||
|
Old NPA |
New NPA |
Affected Area |
Relief Type |
Start of Permissive Dialing |
Mandatory 10-Digit Dialing |
Start Date |
|
318 |
457 |
Louisiana |
Overlay |
2/24/2025 |
8/25/2025 |
9/25/2025 |
|
313 |
679 |
Michigan |
Overlay |
4/7/2025 |
10/7/2025 |
11/7/2025 |
|
206 |
564 |
Washington |
Overlay |
|
|
4/5/2025 |
|
709 |
879 |
Newfoundland & Labrador |
Overlay |
|
|
2/17/2024 |
|
970 |
748 |
Colorado |
Overlay |
|
|
7/7/2025 |
|
334 |
483 |
Alabama |
Overlay |
7/23/2025 |
1/23/2026 |
2/23/2026 |
|
662 |
471 |
Mississippi |
Overlay |
4/30/2025 |
11/25/2025 |
1/30/2026 |
| 347/718/917/929 |
465 |
New York |
Overlay |
9/18/2025 |
4/20/2026 |
6/18/2026 |
Please Note: This schedule is subject to change depending on the capacity of the TFNRegistry™ and notifications from NANPA.
Modifications to this schedule have been highlighted in red.
Recently Completed NPA Relief Activities:
British Columbia NPA 257 to overlay 236/250/604/672/778
Ontario NPA 942 to overlay 416/437/647
California NPA 357 to overlay 559
Tennessee NPA 729 to overlay 423
California NPA 837 to overlay 530
California NPA 738 to overlay 213/323
Texas NPA 621 to overlay 281/346/713/832
Wisconsin NPA 274 to overlay 920
Maryland NPA 227 to overlay 240/301
Ontario NPA 382 to overlay 226/519/548