| District of Massachusetts area codes: 781 | |
|---|---|
| Country | United States |
| State/Province | Massachusetts |
| Major City | Boston |
| Time Zone | Eastern |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 781-201 | Norfolk | Sharon, MA | Sprint Spectrum L.p. |
| 781-202 | Suffolk | Boston, MA | Teleport Communications America |
| 781-203 | Suffolk | Boston, MA | Mcimetro Access Transmission Services LLC |
| 781-204 | Plymouth | Norwell, MA | Sprint Spectrum L.p. |
| 781-205 | Middlesex | Cambridge, MA | Teleport Communications America |
| 781-206 | Plymouth | Norwell, MA | New Cingular Wireless PCS - DC |
| 781-207 | Middlesex | Waltham, MA | Xo Massachusetts |
| 781-208 | Middlesex | Waltham, MA | Verizon New England Inc. |
| 781-209 | Middlesex | Waltham, MA | Rcn Telecom Services |
| 781-210 | Norfolk | Cohasset, MA | Broadwing Communications |
| 781-212 | Middlesex | Waltham, MA | Nep |
| 781-213 | Middlesex | Wakefield, MA | Verizon New England Inc. |
| 781-214 | Middlesex | Cambridge, MA | Level 3 Communications |
| 781-215 | Suffolk | Boston, MA | Broadwing Communications |
| 781-216 | Suffolk | Boston, MA | Teleport Communications America |
| 781-217 | Plymouth | Kingston, MA | Mcimetro Access Transmission Services LLC |
| 781-218 | Suffolk | Dorchester, MA | Teleport Communications America |
| 781-219 | Suffolk | Boston, MA | Mcimetro Access Transmission Services LLC |
| 781-221 | Middlesex | Burlington, MA | Verizon New England Inc. |
| 781-222 | Middlesex | Burlington, 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.