Massachusetts 지역 코드: 351
Note：351 지역 번호는 다음과 같습니다 Massachusetts, 미국. 국제 전화 번호는 001351 or 001-351、0010351、+1-351、+1+351、+1351、00-1-351、00 1 351.
More About Area Code 351
Area Code 351 was first put in service May 2, 2001. Currently, the largest city it serves is Lowell, MA, and it overlaps coverage areas with area code 978.
Active Phone Number Prefixes
| Prefix | Usage | Primary City | Carrier |
| (351) 201- | Wireless | Danvers | Sprint Spectrum L.p. |
| (351) 202- | Landline | Pepperell | Peerless Network Of Massachusetts |
| (351) 205- | Landline | Georgetown | Peerless Network Of Massachusetts |
| (351) 206- | Landline | Rockport | Peerless Network Of Massachusetts |
| (351) 207- | Unknown | Comcast Phone Of Massachusetts | |
| (351) 814- | Unknown | Multiple Ocn Listing |