NORWALK — CT
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | 9147 | 21 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT | 6388 | 18 |
| OMNIPOINT COMMUNICATIONS, INC. - CT | 6624 | 9 |
| CABLEVISION LIGHTPATH, INC. - CT | 4950 | 5 |
| LEVEL 3 COMMUNICATIONS, LLC - CT | 4800 | 4 |