WINDSOR — CO
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| COMCAST IP PHONE, LLC | 318J | 2 |
| NEW CINGULAR WIRELESS PCS, LLC | 6010 | 2 |
| QWEST CORPORATION | 9636 | 2 |
| TELSTAR COMMUNICATIONS INC | 016G | 1 |
| BANDWIDTH.COM CLEC, LLC - CO | 078F | 1 |