CHESHIRE — CT
Data last updated: August 31, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| ONVOY, LLC - CT | 639C | 4 |
| SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | 9147 | 4 |
| BANDWIDTH.COM CLEC, LLC - CT | 199F | 2 |
| PAETEC ITEL, LLC | 829J | 2 |
| COMCAST IP PHONE, LLC | 318J | 1 |