TELEPORT COMMUNICATIONS AMERICA, LLC - CO
28 prefixes in 303 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 303-200 | DENVER | 7378 | — | Yes |
| 303-248 | DENVER | 7378 | — | Yes |
| 303-253 | DENVER | 7378 | — | Yes |
| 303-256 | DENVER | 7378 | — | — |
| 303-262 | DENVER | 7378 | — | — |
| 303-264 | DENVER | 7378 | — | Yes |
| 303-354 | DENVER | 7378 | — | Yes |
| 303-362 | DENVER | 7378 | — | Yes |
| 303-374 | DENVER | 7378 | — | Yes |
| 303-379 | DENVER | 7378 | — | Yes |
| 303-474 | DENVER | 7378 | — | Yes |
| 303-479 | DENVER | 7378 | — | Yes |
| 303-484 | DENVER | 7378 | — | Yes |
| 303-524 | DENVER | 7378 | — | Yes |
| 303-537 | DENVER | 7378 | — | Yes |
| 303-568 | DENVER | 7378 | — | Yes |
| 303-583 | DENVER | 7378 | — | — |
| 303-593 | DENVER | 7378 | — | Yes |
| 303-600 | DENVER | 7378 | — | Yes |
| 303-632 | DENVER | 7378 | — | Yes |
| 303-723 | DENVER | 7378 | — | — |
| 303-728 | DENVER | 7378 | — | Yes |
| 303-736 | DENVER | 7378 | — | Yes |
| 303-749 | DENVER | 7378 | — | Yes |
| 303-824 | DENVER | 7378 | — | Yes |
| 303-845 | LONGMONT | 7378 | — | Yes |
| 303-927 | DENVER | 7378 | — | Yes |
| 303-942 | DENVER | 7378 | — | Yes |
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.