NPAs in service from 29 September 2021
| NPA | Country | Time Difference (From GMT) | State | State Abbrv. | Service Date | Comments |
| 227 | USA | -5 | Maryland | MD | | Proposed |
| 283 | USA | -5 | Ohio | OH | | Suspended |
| 354 | CANADA | -5 | Quebec | | | Suspended |
| 368 | CANADA | -7 | Alberta | | 23 Apr 2022 | |
| 428 | CANADA | -4 | New Brunswick | | 23 Apr 2022 | |
| 464 | USA | -6 | Illinois | IL | | Proposed |
| 474 | CANADA | -6 | Saskatchewan | | 02 Oct 2021 | |
| 557 | USA | -5 | Missouri | MO | | Suspended |
| 656 | USA | -5 to -6 | Florida | FL | 22 Feb 2022 | |
| 679 | USA | -5 | Michigan | MI | | Proposed |
| 730 | USA | -6 | Illinois | IL | | Proposed |
| 742 | CANADA | -5 | Ontario | | 16 Oct 2021 | |
| 771 | USA | -5 | District of Columbia | DC | 09 Nov 2021 | |
| 826 | USA | -5 | Virginia | VA | 14 Jun 2022 | |
| 943 | USA | -5 | Geogia | GA | 15 Mar 2022 | |
| 948 | USA | -5 | Virginia | VA | 09 May 2022 | |
| 975 | USA | -5 | Missouri | MO | | Suspended |
See World Zone 1 for explanation of "NPA"
Where shown:
| Time Diff. |
is with respect to GMT (UCT) |
Suspended
Pending
Proposed |
indicate the code is not in use: the "Service Date" has been delayed or not set |
| Service Date |
is the date code becomes (or became) effective. If no date is shown, the code was introduced before 1995 |