351 Area Code
The 351 area code is a telephone area code serving north central and most of northeastern Massachusetts.
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The 351 area code is a telephone area code serving north central and most of northeastern Massachusetts.
Federal Data
State Data
County Data
City Data
Phone numbers with this area code originate from the service area that extends in north central and northeastern Massachusetts.
Area code 351 was added to the same service area as area code 978 in an overlay complex on May 2, 2001. Since then, ten-digit dialing has been mandatory for all telephone calls.
Area code 351 is a general purpose code which was placed in service on May 2, 2001.
Our Massachusetts phone number lookup service will analyze the three-digit prefix of any 351 area code phone number and will show which telecommunications company and rate center it was initially assigned to. This prefix code data may help to determine the U.S. carrier, Massachusetts geographic region, and local calling area associated with the phone number.
Phone numbers follow the following structure under the North American Numbering Plan:
Understanding the area code can help you determine if a call is local to your area. However, keep in mind that due to mobile number portability and VoIP services, the caller may be anywhere in the United States, so it’s best to search for the most recent phone number details.
| Company | Number of Prefixes |
|---|---|
| COMCAST IP PHONE, LLC | 1 |
| MULTIPLE OCN LISTING | 1 |
Carrier names have been updated from their original FCC assignments to reflect current companies following mergers, acquisitions, and rebranding. Updates were determined using AI-assisted research and may not be accurate or reflect up to date changes. This data is provided without warranties of accuracy or completeness.
| Rate Center | Number of Prefixes |
|---|---|
| GEORGETOWN | 1 |
| LAWRENCE | 1 |
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