ALLISON — CO
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| ONVOY, LLC - CO | 026D | 1 |
| CENTURYTEL OF COLORADO, INC. DBA CENTURYLINK | 2208 | 1 |
| COMMIO, LLC | 939H | 1 |
Data last updated: June 25, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| ONVOY, LLC - CO | 026D | 1 |
| CENTURYTEL OF COLORADO, INC. DBA CENTURYLINK | 2208 | 1 |
| COMMIO, LLC | 939H | 1 |