| NPA | Country | Time Difference (GMT) | State | State Abbrv. | In Service Date | Comments |
| 227 | USA | -5 | Maryland | MD | | Proposed |
| 249 | CANADA | -5 | Ontario | | 19 Mar 2011 | |
| 274 | USA | -6 | Wisconsin | WI | 14 May 2011 | |
| 283 | USA | -5 | Ohio | OH | | Suspended |
| 327 | USA | -6 | Arkansas | AR | 20 Oct 2012 | |
| 341 | USA | -8 | California | CA | | Suspended |
| 364 | USA | -5 | Kentucky | KY | 29 Oct 2011 | |
| 369 | USA | -8 | California | CA | | Suspended |
| 380 | USA | -5 | Ohio | OH | | Suspended |
| 447 | USA | -6 | Illinois | IL | | Proposed |
| 464 | USA | -6 | Illinois | IL | | Proposed |
| 557 | USA | -5 | Missouri | MO | | Suspended |
| 564 | USA | -8 | Washington | WA | | Suspended |
| 627 | USA | -8 | California | CA | | Suspended |
| 628 | USA | -8 | California | CA | | Suspended |
| 667 | USA | -5 | Maryland | MD | | Proposed |
| 669 | USA | -8 | California | CA | | Suspended |
| 679 | USA | -5 | Michigan | MI | | Proposed |
| 689 | USA | -5 to -6 | Florida | FL | | Suspended |
| 721 | SINT MAARTEN | -4 | | | | Part of Netherlands Antilles (until October 2010)
Proposed |
| 730 | USA | -6 | Illinois | IL | | Proposed |
| 737 | USA | -6 to -7 | Texas | TX | | Suspended |
| 764 | USA | -8 | California | CA | | Suspended |
| 873 | CANADA | -5 | Quebec | | 01 Jun 2013 | |
| 929 | USA | -5 | New York | NY | 31 Jan 2011 | |
| 975 | USA | -5 | Missouri | MO | | Suspended |
| 984 | USA | -5 | North Carolina | NC | | Postponed |