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 |
|
870 |
327 |
Arkansas |
Overlay |
11/4/2023 |
5/4/2024 |
6/4/2024 |
|
235 |
573 |
Missouri |
Overlay |
8/26/2023 |
2/24/2024 |
3/24/2024 |
|
904 |
324 |
Florida |
Overlay |
7/31/2023 |
|
2/26/2024 |
|
864 |
821 |
South Carolina |
Overlay |
1/19/2024 |
7/19/2024 |
8/19/2024 |
|
440 |
436 |
Ohio |
Overlay |
|
|
3/1/2024 |
|
236/250/604/672/778 |
257 |
British Columbia |
Overlay |
|
|
5/24/2025 |
|
416/437/647 |
942 |
Ontario |
Overlay |
|
|
4/26/2025 |
|
213/323 |
738 |
California |
Overlay |
|
|
11/1/2024 |
|
507 |
924 |
Minnesota |
Overlay |
1/30/2024 |
7/30/2024 |
8/30/2024 |
|
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 |
|
423 |
729 |
Tennessee |
Overlay |
8/5/2024 |
2/5/2025 |
3/5/2025 |
|
206 |
564 |
Washington |
Overlay |
|
|
4/5/2025 |
|
530 |
837 |
California |
Overlay |
11/26/2024 |
4/30/2024 |
1/31/2025 |
|
709 |
879 |
Newfoundland & Labrador |
Overlay |
|
|
2/17/2024 |
Please Note: This schedule is subject to change depending on the capacity of the TFNRegistryTM and notifications from NANPA.
Modifications to this schedule have been highlighted in red.
Recently Completed NPA Relief Activities:
New York NPA 363 to overlay 561.
Illinois NPA 861 to overlay 309.
Wisconsin NPA 274 to overlay 920.
Maryland NPA 227 to overlay 240/301.
Ontario NPA 382 to overlay 226/519/548.
Florida NPA 645 to overlay 305/786.
Illinois NPA 730 to overlay 618.
Wisconsin NPA 608 to overlay 353.
Arizona NPA 480, 602, 623 Boundary Elimination Overlay.
New York 624 to overlay 716.
Virginia NPA 686 to overlay 804.