Massachusetts, United States
Eastern Time
3:28 AM
Area Code
351
State / Province
Massachusetts
Country
United States
Time Zone
Eastern Time
Area code 351 covers 43 cities and communities across Massachusetts, based on telephone company rate center data.
Use the E.164 format for clickable phone links (RFC 3966):
<a href="tel:+13515550100">+13515550100</a><a href="tel:+13515550199">+13515550199</a>Look up which exchange in Massachusetts a specific 351 number is homed to, and whether its block is wireline or wireless. See what a reverse lookup can establish before relying on the answer.
93 active prefixes in this area code, assigned as 808 thousands-blocks — pooling splits one prefix across several carriers, so each block is listed separately with the rate centre it is homed to, its carrier of record, and the switch that serves it.
Showing blocks 1–100 of 808
| NPA-NXX | Block | Rate centre | Type | Carrier (OCN) | Switch | LATA | LIR | Dates |
|---|---|---|---|---|---|---|---|---|
| 351-200 | 0 | Ashby | Landline or VoIP | ONVOY, LLC - MA (892D) | BOSTON | 128 | — | — |
| 351-200 | 1 | Ashby | Landline or VoIP | TELNYX LLC (073H) | SOVLMAAB7MD | 128 | — | — |
| 351-200 | 2 | Ashby | Landline or VoIP | TELNYX LLC (073H) | BSTPMALLOMD | 128 | — | — |
| 351-200 | 3 | Ashby | Landline or VoIP | ONVOY, LLC - MA (892D) | BOSTON | 128 | — | — |
| 351-200 | 4 | Ashby | Landline or VoIP | ONVOY, LLC - MA (892D) | BOSTON | 128 | — | — |
| 351-200 | 5 | Ashby | Landline or VoIP | ONVOY, LLC - MA (892D) | BOSTON | 128 | — | — |
| 351-200 | 6 | Ashby | Landline or VoIP | TC SYSTEMS, INC. (7135) | FRMNMAUNCMD | 128 | — | — |
| 351-200 | 7 | Ashby | Landline or VoIP | ONVOY, LLC - MA (892D) | BOSTON | 128 | — | — |
| 351-200 | 8 | Ashby | Landline or VoIP | ONVOY, LLC - MA (892D) | BOSTON | 128 | — | — |
| 351-200 | 9 | Ashby | Landline or VoIP | ONVOY, LLC - MA (892D) | BOSTON | 128 | — | — |
| 351-200 | A | Ashby | Landline or VoIP | TC SYSTEMS, INC. (7135) | FRMNMAUNCMD | 128 | — | — |
| 351-201 | 0 | Danvers | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 351-201 | 1 | Danvers | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 351-201 | 2 | Danvers | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 351-201 | 3 | Danvers | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 351-201 | 4 | Danvers | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 351-201 | 5 | Danvers | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 351-201 | 6 | Danvers | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 351-201 | 7 | Danvers | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 351-201 | 8 | Danvers | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 351-201 | 9 | Danvers | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 351-201 | A | Danvers | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 351-202 | 0 | Pepperell | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 351-202 | 1 | Pepperell | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 351-202 | 2 | Pepperell | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 351-202 | 3 | Pepperell | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 351-202 | 4 | Pepperell | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 351-202 | 5 | Pepperell | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 351-202 | 6 | Pepperell | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 351-202 | 7 | Pepperell | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 351-202 | 8 | Pepperell | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 351-202 | 9 | Pepperell | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 351-202 | A | Pepperell | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 351-203 | 0 | Tyngsboro | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MA (990E) | BSTNMABLOMD | 128 | — | — |
| 351-203 | 3 | Tyngsboro | Landline or VoIP | ONVOY, LLC - MA (892D) | BOSTON | 128 | — | — |
| 351-203 | 4 | Tyngsboro | Landline or VoIP | ONVOY, LLC - MA (892D) | BOSTON | 128 | — | — |
| 351-203 | 5 | Tyngsboro | Wireless | ONVOY SPECTRUM, LLC (624H) | CMBRMABENMD | 128 | — | — |
| 351-203 | 6 | Tyngsboro | Landline or VoIP | ONVOY, LLC - MA (892D) | BOSTON | 128 | — | — |
| 351-203 | 7 | Tyngsboro | Landline or VoIP | ONVOY, LLC - MA (892D) | BOSTON | 128 | — | — |
| 351-203 | 8 | Tyngsboro | Landline or VoIP | ONVOY, LLC - MA (892D) | BOSTON | 128 | — | — |
| 351-203 | 9 | Tyngsboro | Landline or VoIP | ONVOY, LLC - MA (892D) | BOSTON | 128 | — | — |
| 351-203 | A | Tyngsboro | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MA (990E) | BSTNMABLOMD | 128 | — | — |
| 351-204 | 0 | Lawrence | Landline or VoIP | TELNYX LLC (073H) | BSTPMALLOMD | 128 | — | — |
| 351-204 | 1 | Lawrence | Landline or VoIP | IP HORIZON LLC (515J) | — | 128 | — | — |
| 351-204 | 2 | Lawrence | Landline or VoIP | PAETEC ITEL, LLC (829J) | BRTNMACOX2X | 128 | — | — |
| 351-204 | 3 | Lawrence | Landline or VoIP | METROPCS, INC. (5562) | NORTON | 128 | — | — |
| 351-204 | 4 | Lawrence | Landline or VoIP | ONVOY, LLC - MA (892D) | BOSTON | 128 | — | — |
| 351-204 | 5 | Lawrence | Landline or VoIP | HD CARRIER LLC (321J) | CMBRMABEQMD | 128 | — | — |
| 351-204 | 6 | Lawrence | Landline or VoIP | HD CARRIER LLC (321J) | CMBRMABEQMD | 128 | — | — |
| 351-204 | 7 | Lawrence | Landline or VoIP | COMCAST IP PHONE, LLC (318J) | NWTNMAWAVMD | 128 | — | — |
| 351-204 | 8 | Lawrence | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 351-204 | 9 | Lawrence | Landline or VoIP | METROPCS, INC. (5562) | NORTON | 128 | — | — |
| 351-204 | A | Lawrence | Landline or VoIP | METROPCS, INC. (5562) | NORTON | 128 | — | — |
| 351-205 | 0 | Georgetown | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 351-205 | 1 | Georgetown | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 351-205 | 2 | Georgetown | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 351-205 | 3 | Georgetown | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 351-205 | 4 | Georgetown | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 351-205 | 5 | Georgetown | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 351-205 | 6 | Georgetown | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 351-205 | 7 | Georgetown | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 351-205 | 9 | Georgetown | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 351-205 | A | Georgetown | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 351-206 | 0 | Rockport | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 351-206 | 1 | Rockport | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 351-206 | 2 | Rockport | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 351-206 | 4 | Rockport | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 351-206 | 5 | Rockport | Landline or VoIP | TERRA NOVA TELECOM INC. (145J) | — | 128 | — | — |
| 351-206 | 9 | Rockport | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 351-206 | A | Rockport | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 351-207 | 0 | Georgetown | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MA (990E) | BSTNMABLOMD | 128 | — | — |
| 351-207 | 1 | Georgetown | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MA (990E) | BSTNMABLOMD | 128 | — | — |
| 351-207 | 2 | Georgetown | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MA (990E) | BSTNMABLOMD | 128 | — | — |
| 351-207 | 3 | Georgetown | Landline or VoIP | ONVOY, LLC - MA (892D) | BOSTON | 128 | — | — |
| 351-207 | 4 | Georgetown | Landline or VoIP | ONVOY, LLC - MA (892D) | BOSTON | 128 | — | — |
| 351-207 | 5 | Georgetown | Landline or VoIP | COMCAST IP PHONE, LLC (318J) | NWTNMAWAVMD | 128 | — | — |
| 351-207 | 6 | Georgetown | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MA (990E) | BSTNMABLOMD | 128 | — | — |
| 351-207 | 7 | Georgetown | Landline or VoIP | CENTURYLINK COMMUNICATIONS, LLC (508J) | BSTPMALL5MD | 128 | — | — |
| 351-207 | 8 | Georgetown | Landline or VoIP | IP HORIZON LLC (515J) | — | 128 | — | — |
| 351-207 | 9 | Georgetown | Landline or VoIP | IP HORIZON LLC (515J) | — | 128 | — | — |
| 351-207 | A | Georgetown | Landline or VoIP | COMCAST IP PHONE, LLC (318J) | NWTNMAWAVMD | 128 | — | — |
| 351-208 | 0 | Lowell | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 351-208 | 1 | Lowell | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 351-208 | 2 | Lowell | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 351-208 | 3 | Lowell | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MA (990E) | BSTNMABLOMD | 128 | — | — |
| 351-208 | 4 | Lowell | Landline or VoIP | VONAGE AMERICA LLC (197D) | SOVLMAAB3MD | 128 | — | — |
| 351-208 | 5 | Lowell | Landline or VoIP | VONAGE AMERICA LLC (197D) | SOVLMAAB3MD | 128 | — | — |
| 351-208 | 6 | Lowell | Wireless | NEW CINGULAR WIRELESS PCS, LLC - DC (4036) | CMBSMA01AMD | 128 | — | — |
| 351-208 | 7 | Lowell | Landline or VoIP | ONVOY, LLC - MA (892D) | BOSTON | 128 | — | — |
| 351-208 | 8 | Lowell | Wireless | NEW CINGULAR WIRELESS PCS, LLC - DC (4036) | CMBSMA01AMD | 128 | — | — |
| 351-208 | 9 | Lowell | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 351-208 | A | Lowell | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA (6387) | CATNMAAKAMD | 128 | — | — |
| 351-209 | 0 | Acton | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA (6387) | CATNMAAKAMD | 128 | — | — |
| 351-209 | 1 | Acton | Landline or VoIP | EXIANT COMMUNICATIONS LLC (114J) | BSTPMALLWMD | 128 | — | — |
| 351-209 | 2 | Acton | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 351-209 | 3 | Acton | Wireless | ONVOY SPECTRUM, LLC (624H) | CMBRMABENMD | 128 | — | — |
| 351-209 | 4 | Acton | Wireless | ONVOY SPECTRUM, LLC (624H) | CMBRMABENMD | 128 | — | — |
| 351-209 | 5 | Acton | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 351-209 | 6 | Acton | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 351-209 | 7 | Acton | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
Block-level assignments from the North American Numbering Plan administrator, via localcallingguide.com.
Assigned Prefixes
93
Assignment Blocks
808
Rate Centers
43
Carriers of Record
31
| Type | Blocks | Share |
|---|---|---|
| Landline | 1 | 0% |
| Landline or VoIP | 549 | 68% |
| Wireless | 257 | 32% |
| Unknown | 1 | 0% |
| Carrier | Blocks |
|---|---|
| ONVOY, LLC - MA | 313 |
| OMNIPOINT MIAMI E LICENSE, LLC | 99 |
| ONVOY SPECTRUM, LLC | 79 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 44 |
| PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 40 |
| COMMIO, LLC | 29 |
| FRACTEL, LLC | 29 |
| BANDWIDTH.COM CLEC, LLC - MA | 21 |
| NEW CINGULAR WIRELESS PCS, LLC - DC | 20 |
| COMCAST IP PHONE, LLC | 17 |
| 21 other carriers | 117 |
Carrier of record for each block. Numbers ported to another carrier keep their original block assignment, so this is not a lookup of who serves a given number today.
| Rate Center | Prefixes | Blocks |
|---|---|---|
| Acton | 7 | 65 |
| Lowell | 6 | 56 |
| Lawrence | 5 | 45 |
| Danvers | 4 | 38 |
| Georgetown | 4 | 32 |
| Haverhill | 4 | 44 |
| Ashby | 3 | 24 |
| Gloucester | 3 | 31 |
| Harvard | 3 | 26 |
| Ipswich | 3 | 28 |
| Merrimac | 3 | 33 |
| Peabody | 3 | 32 |
| Amesbury | 2 | 22 |
| Hamilton | 2 | 12 |
| Hubbardston | 2 | 14 |
| Hudson | 2 | 21 |
| Leominster | 2 | 21 |
| Lunenburg | 2 | 15 |
| Manchester | 2 | 19 |
| Orange | 2 | 12 |
| Pepperell | 2 | 20 |
| Rockport | 2 | 14 |
| Templeton | 2 | 20 |
| Tyngsboro | 2 | 15 |
| Westford | 2 | 14 |
| Winchendon | 2 | 11 |
| Andover | 1 | 11 |
| Ashburnham | 1 | 6 |
| Athol (Franklin County) | 1 | 5 |
| Barre | 1 | 7 |
| Berlin | 1 | 5 |
| Beverly | 1 | 11 |
| Bolton | 1 | 6 |
| Clinton | 1 | 7 |
| Essex | 1 | 8 |
| Fitchburg | 1 | 7 |
| Groton | 1 | 11 |
| Newburyport | 1 | 11 |
| Princeton | 1 | 5 |
| Rowley | 1 | 6 |
| Salem | 1 | 1 |
| Shirley | 1 | 8 |
| Westminster | 1 | 9 |
A rate center is the telephone exchange area a number is homed to. It sets local calling boundaries, and is not the caller's current location.
Area code 351 is a North American Numbering Plan (NANP) telephone area code assigned to Massachusetts, United States. It is one of 9 area codes serving Massachusetts. As population and demand for phone numbers grew, the region was divided into multiple numbering plan areas to avoid exhausting the available 7-digit number pool.
Yes. 351 is an active North American Numbering Plan (NANP) area code, currently assigned to Massachusetts, United States. It is safe to answer or dial calls using this area code.
Area code 351 covers 43 cities and communities in Massachusetts, including Acton, Amesbury, Andover, Ashburnham, Ashby, and 38 more localities. This is based on telephone company rate center data — the geographic areas carriers use to determine local calling boundaries and to assign numbers when a business or individual requests a phone number in a specific city.
All numbers in the 351 area code observe Eastern Time (IANA timezone: America/New_York). Eastern Time is UTC−5 in winter (EST) and UTC−4 in summer (EDT). When placing a call to a 351 number from a different time zone, check the current local time above to avoid calling outside of business hours.
From within Massachusetts, dial the 7-digit local number directly if calling within the same rate center, or dial 1 + 351 + 7-digit number for long-distance calls within North America. From outside the US or Canada, dial your country's international exit code followed by 1 351 XXX XXXX. The country code for both the United States and Canada in NANP is +1.
Format 351 numbers using E.164 notation as required by RFC 3966: prefix with +1 and omit dashes and parentheses (e.g., +13515550100). This format ensures tel: links work correctly on all mobile browsers and VoIP apps. See the tel: URI formatting guide for complete examples.