| District of Massachusetts area codes: 781 | |
|---|---|
| Country | United States |
| State/Province | Massachusetts |
| Major City | Boston |
| Time Zone | Eastern |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 781-306 | Middlesex | Medford, MA | Verizon New England Inc. |
| 781-307 | Suffolk | Boston, MA | Mcimetro Access Transmission Services LLC |
| 781-308 | Norfolk | Randolph, MA | Omnipoint Miami E License |
| 781-309 | Suffolk | Boston, MA | Mcimetro Access Transmission Services LLC |
| 781-310 | Norfolk | Dedham, MA | Verizon New England Inc. |
| 781-312 | Plymouth | Hanover, MA | Level 3 Communications |
| 781-313 | Suffolk | Boston, MA | Mcimetro Access Transmission Services LLC |
| 781-314 | Middlesex | Waltham, MA | Verizon New England Inc. |
| 781-315 | Middlesex | Reading, MA | Rcn Telecom Services |
| 781-316 | Middlesex | Arlington, MA | Rcn Telecom Services |
| 781-317 | Middlesex | Waltham, MA | Verizon New England Inc. |
| 781-318 | Norfolk | Stoughton, MA | Mcimetro Access Transmission Services LLC |
| 781-319 | Plymouth | Marshfield, MA | Verizon New England Inc. |
| 781-320 | Norfolk | Dedham, MA | Verizon New England Inc. |
| 781-321 | Middlesex | Malden, MA | Verizon New England Inc. |
| 781-322 | Middlesex | Malden, MA | Verizon New England Inc. |
| 781-323 | Suffolk | Boston, MA | Global Crossing Local Services-ma |
| 781-324 | Middlesex | Malden, MA | Verizon New England Inc. |
| 781-325 | Suffolk | Boston, MA | Level 3 Communications |
| 781-326 | Norfolk | Dedham, MA | Verizon New England Inc. |
There are 727 prefixes, In the code area, the major cities are Arlington, MA;Braintree, MA;Burlington, MA;Dedham,. The major city is Boston.