WALSENBURG — CO
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| LEVEL 3 COMMUNICATIONS, LLC - CO | 6118 | 2 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO | 6567 | 2 |
| BANDWIDTH.COM CLEC, LLC - CO | 078F | 1 |
| NUSO, LLC | 732J | 1 |
| QWEST CORPORATION | 9636 | 1 |