GROTON — MA
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | 2 |
| VERIZON NEW ENGLAND INC. | 9102 | 2 |
| PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | 1 |
| LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | 1 |
| TC SYSTEMS, INC. | 7135 | 1 |