RT COMMUNICATIONS
17 prefixes in 307 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 307-245 | PINEBLUFFS | 3410 | — | — |
| 307-246 | ALBIN | 3410 | — | — |
| 307-347 | WORLAND | 3410 | — | — |
| 307-375 | WORLAND | 3410 | — | — |
| 307-437 | MIDWEST | 3410 | — | — |
| 307-457 | GAS HILLS | 3410 | — | — |
| 307-465 | NEWCASTLE | 3410 | — | — |
| 307-467 | HULETT | 3410 | — | — |
| 307-468 | UPTON | 3410 | — | — |
| 307-544 | JEFFREY CY | 3410 | — | — |
| 307-547 | BURNS | 3410 | — | — |
| 307-649 | CARPENTER | 3410 | — | — |
| 307-738 | KAYCEE | 3410 | — | — |
| 307-746 | NEWCASTLE | 3410 | — | Yes |
| 307-756 | MOORCROFT | 3410 | — | Yes |
| 307-864 | THERMOPOLS | 3410 | — | — |
| 307-876 | SHOSHONI | 3410 | — | — |
These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.