LEVEL 3 COMMUNICATIONS, LLC - CO
46 prefixes in 720 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 720-204 | LONGMONT | 6118 | — | Yes |
| 720-251 | DENVER | 6118 | — | Yes |
| 720-259 | DENVER | 6118 | — | Yes |
| 720-262 | DENVER | 6118 | — | Yes |
| 720-263 | DENVER | 6118 | — | Yes |
| 720-266 | DENVER | 6118 | — | Yes |
| 720-277 | DENVER | 6118 | — | Yes |
| 720-330 | DENVER | 6118 | — | Yes |
| 720-343 | DENVER | 6118 | 2003-10-31 | Yes |
| 720-379 | DENVER | 6118 | — | Yes |
| 720-399 | DENVER | 6118 | 2011-05-06 | Yes |
| 720-414 | ALLNSPKLYN | 6118 | 2011-10-04 | Yes |
| 720-420 | DENVER | 6118 | 2010-05-26 | Yes |
| 720-457 | DENVER | 6118 | — | Yes |
| 720-468 | DENVER | 6118 | 2001-12-17 | Yes |
| 720-496 | DENVER | 6118 | 2001-12-17 | Yes |
| 720-506 | DENVER | 6118 | 2001-12-17 | Yes |
| 720-545 | DENVER | 6118 | 2009-06-12 | Yes |
| 720-548 | DENVER | 6118 | — | Yes |
| 720-549 | DENVER | 6118 | — | Yes |
| 720-567 | DENVER | 6118 | — | — |
| 720-577 | DENVER | 6118 | 2014-07-03 | Yes |
| 720-595 | DENVER | 6118 | 2016-05-10 | Yes |
| 720-616 | DENVER | 6118 | 2014-08-29 | Yes |
| 720-640 | HUDSON | 6118 | 2019-01-28 | Yes |
| 720-643 | DENVER | 6118 | 2015-08-24 | Yes |
| 720-684 | LONGMONT | 6118 | — | Yes |
| 720-716 | DENVER | 6118 | 2020-03-25 | Yes |
| 720-731 | LONGMONT | 6118 | 2019-01-04 | Yes |
| 720-745 | LONGMONT | 6118 | 2015-04-17 | Yes |
| 720-752 | DENVER | 6118 | 2020-08-17 | Yes |
| 720-789 | DENVER | 6118 | 2011-08-05 | Yes |
| 720-836 | DENVER | 6118 | — | Yes |
| 720-865 | DENVER | 6118 | — | — |
| 720-877 | DENVER | 6118 | — | Yes |
| 720-879 | DENVER | 6118 | — | Yes |
| 720-883 | DENVER | 6118 | — | Yes |
| 720-888 | DENVER | 6118 | — | — |
| 720-891 | DENVER | 6118 | 2001-12-17 | Yes |
| 720-897 | DENVER | 6118 | — | Yes |
| 720-903 | DENVER | 6118 | — | Yes |
| 720-907 | DENVER | 6118 | — | Yes |
| 720-913 | DENVER | 6118 | — | — |
| 720-921 | DENVER | 6118 | — | Yes |
| 720-943 | DENVER | 6118 | — | Yes |
| 720-961 | 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.