WATERTOWN — MA
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| VERIZON NEW ENGLAND INC. | 9102 | 5 |
| TC SYSTEMS, INC. | 7135 | 3 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | 3 |
| PAETEC ITEL, LLC | 829J | 2 |
| PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | 1 |