Massachusetts Area Codes
Data last updated: June 25, 2026
Area Codes in Massachusetts
| NPA | Major Cities | Status | Exchanges | Overlay |
|---|---|---|---|---|
| 339 | Boston, Somerville, Cambridge | Active | 782 | Yes |
| 351 | Boston, Somerville, Norton | Active | 782 | Yes |
| 413 | Springfield, Amherst, Holyoke | Active | 756 | No |
| 508 | Cambridge, Brockton, Worcester | Active | 749 | Yes |
| 617 | Cambridge, Boston, Norton | Active | 768 | Yes |
| 774 | Brockton, Boston, Cambridge | Active | 780 | Yes |
| 781 | Cambridge, Brockton, Norton | Active | 774 | Yes |
| 857 | Norton, Boston, Cambridge | Active | 780 | Yes |
| 978 | Cambridge, Brockton, Norton | Active | 777 | Yes |
Top Carriers in Massachusetts
| Carrier | OCN | NXX Count |
|---|---|---|
| VERIZON NEW ENGLAND INC. | 9102 | 1258 |
| PAETEC ITEL, LLC | 829J | 483 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | 426 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | 320 |
| LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | 304 |
| OMNIPOINT MIAMI E LICENSE, LLC | 6889 | 273 |
| NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | 268 |
| ONVOY, LLC - MA | 892D | 234 |
| METROPCS, INC. | 5562 | 213 |
| TC SYSTEMS, INC. | 7135 | 206 |