STEAMBOSPG — CO
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| QWEST CORPORATION | 9636 | 4 |
| LEVEL 3 COMMUNICATIONS, LLC - CO | 6118 | 2 |
| T-MOBILE USA, INC. | 6529 | 2 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | 2 |
| UNION TELEPHONE COMPANY | 013B | 1 |