LEVEL 3 COMMUNICATIONS, LLC - CO
58 prefixes in 303 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 303-223 | DENVER | 6118 | — | — |
| 303-225 | DENVER | 6118 | — | Yes |
| 303-226 | DENVER | 6118 | — | — |
| 303-228 | DENVER | 6118 | — | — |
| 303-268 | DENVER | 6118 | — | — |
| 303-285 | DENVER | 6118 | — | — |
| 303-301 | DENVER | 6118 | — | Yes |
| 303-309 | DENVER | 6118 | — | Yes |
| 303-325 | DENVER | 6118 | — | Yes |
| 303-327 | DENVER | 6118 | — | Yes |
| 303-345 | DENVER | 6118 | — | Yes |
| 303-376 | DENVER | 6118 | — | — |
| 303-381 | DENVER | 6118 | — | — |
| 303-385 | DENVER | 6118 | — | Yes |
| 303-386 | DENVER | 6118 | — | Yes |
| 303-395 | DENVER | 6118 | — | — |
| 303-406 | DENVER | 6118 | — | Yes |
| 303-409 | DENVER | 6118 | — | Yes |
| 303-414 | DENVER | 6118 | — | Yes |
| 303-416 | DENVER | 6118 | — | Yes |
| 303-418 | DENVER | 6118 | — | Yes |
| 303-482 | DENVER | 6118 | — | Yes |
| 303-483 | DENVER | 6118 | — | Yes |
| 303-493 | DENVER | 6118 | — | Yes |
| 303-500 | HUDSON | 6118 | 2005-01-04 | Yes |
| 303-547 | DENVER | 6118 | — | Yes |
| 303-552 | DENVER | 6118 | — | Yes |
| 303-557 | DENVER | 6118 | — | Yes |
| 303-558 | DENVER | 6118 | — | Yes |
| 303-562 | DENVER | 6118 | — | Yes |
| 303-563 | DENVER | 6118 | — | Yes |
| 303-578 | KEENESBURG | 6118 | 2006-09-12 | Yes |
| 303-586 | DENVER | 6118 | — | Yes |
| 303-590 | DENVER | 6118 | — | Yes |
| 303-625 | DENVER | 6118 | — | Yes |
| 303-653 | DENVER | 6118 | — | Yes |
| 303-719 | DEER TRAIL | 6118 | 2006-11-16 | Yes |
| 303-731 | DENVER | 6118 | — | Yes |
| 303-800 | DENVER | 6118 | — | — |
| 303-827 | LONGMONT | 6118 | — | Yes |
| 303-835 | DENVER | 6118 | — | Yes |
| 303-847 | DENVER | 6118 | — | Yes |
| 303-848 | LONGMONT | 6118 | — | Yes |
| 303-854 | DENVER | 6118 | — | Yes |
| 303-856 | DENVER | 6118 | — | Yes |
| 303-865 | DENVER | 6118 | — | Yes |
| 303-872 | DENVER | 6118 | — | Yes |
| 303-874 | DENVER | 6118 | — | Yes |
| 303-900 | GEORGETOWN | 6118 | 2007-01-10 | Yes |
| 303-923 | DENVER | 6118 | — | Yes |
| 303-951 | DENVER | 6118 | — | Yes |
| 303-952 | DENVER | 6118 | — | Yes |
| 303-953 | DENVER | 6118 | — | Yes |
| 303-954 | DENVER | 6118 | — | Yes |
| 303-955 | DENVER | 6118 | — | Yes |
| 303-957 | DENVER | 6118 | — | Yes |
| 303-963 | DENVER | 6118 | — | Yes |
| 303-974 | DENVER | 6118 | — | 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.