GYPSUM — CO
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| ONVOY, LLC - CO | 026D | 1 |
| CENTURYTEL OF EAGLE, INC. DBA CENTURYLINK | 2185 | 1 |
| SAN ISABEL TELECOM, INC. - CO | 4164 | 1 |
| LEVEL 3 COMMUNICATIONS, LLC - CO | 6118 | 1 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | 1 |