Caller ID for
Area code 351
Area code 351 Lowell, Massachusetts
Area code 351 is in Massachusetts, with numbers assigned in Lowell, Danvers, Lawrence and 24 more places. It’s 12:13 AM there now.
- State
- Massachusetts9 area codes in Massachusetts
- Time zone
- Eastern12:13 AM there now
- Exchanges
- 9227 places
- Overlay
- 978Same area, 10-digit dialing
- No sign-up
- We never contact the number
- Spam risk included
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Where area code 351 is
Numbers in 351 are assigned to 27 places in 5 counties: Essex County, Middlesex County, Worcester County, Franklin County and Barnstable County.
No single place dominates: Lowell, the largest, has 5% of the exchanges.
- Lowell5
- Danvers4
- Lawrence4
- Haverhill4
- Gloucester3
- Ipswich3
- Peabody3
- Pepperell2
- Rockport2
- Hudson2
- Amesbury2
- Leominster2
- Orange2
- Lunenburg2
- Winchendon2
- Beverly1
- Barre1
- Andover1
- Newburyport1
- Fitchburg1
- Salem1
- Groton1
- Rowley1
- Provincetown1
Phone companies in 351
92 blocks of numbers in 351 are held by 21 phone companies. The most belong to Inteliquent (28), T-Mobile (14) and Fractel (11).
A large share, about 68%, belongs to competitive and internet phone carriers; wireless networks hold 23% and local phone and cable companies 9%.
A block’s holder is the company it was first assigned to; numbers can move to other carriers since.
History and overlays
351 went into service in 2001, added to the area of 978.
978 (since 1997) shares the same area, so a new number there can get any of these codes and local calls are dialed with all 10 digits.
54 new exchanges were assigned since 2021, the latest in May 2026.
Calling 351
It’s 12:13 AM Eastern time in 351 right now.
From elsewhere in the U.S., dial 1, 351 and the 7-digit number; inside the area, all 10 digits too.
Nearby area codes
Massachusetts has 9 area codes: 339, 351, 413, 508, 617, 774, 781, 857 and 978.
- 781 · Waltham, MA · about 19 mi
- 617 · Boston, MA · about 21 mi
- 857 · Boston, MA · about 21 mi
- 339 · Lynn, MA · about 22 mi
- 508 · Worcester, MA · about 39 mi
- 774 · Worcester, MA · about 43 mi
From the North American Numbering Plan Administrator’s area code and exchange records (10/22/2026) and U.S. Census place and county names. Places and companies are where number blocks were assigned, not where anyone lives or which carrier a number uses today.
Map of the 351 area code
Map of the 351 area code around Lowell, Danvers and Lawrence, Massachusetts.
Cities on the map
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Questions about 351
Where is area code 351?
In Massachusetts, covering Lowell, Danvers and Lawrence and other places across 5 counties.
What time zone is 351 in?
Eastern time. It was 12:13 AM there when this page loaded.
Is 351 an overlay?
Yes. 978 serves the same area, so dial all 10 digits for local calls.
Which phone companies have 351 numbers?
21 companies hold blocks; the most belong to Inteliquent, T-Mobile and Fractel. About 23% of blocks are wireless.
Is 351 running out of numbers?
Not on record. 54 new exchanges have been assigned since 2021.