Massachusetts, United States
Eastern Time
1:23 AM
Area Code
617
State / Province
Massachusetts
Country
United States
Time Zone
Eastern Time
Area code 617 covers 27 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:+16175550100">+16175550100</a><a href="tel:+16175550199">+16175550199</a>Look up which exchange in Massachusetts a specific 617 number is homed to, and whether its block is wireline or wireless. See what a reverse lookup can establish before relying on the answer.
771 active prefixes in this area code, assigned as 4,757 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 4,757
| NPA-NXX | Block | Rate centre | Type | Carrier (OCN) | Switch | LATA | LIR | Dates |
|---|---|---|---|---|---|---|---|---|
| 617-201 | 0 | Cambridge | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 617-201 | 1 | Cambridge | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 617-201 | 2 | Cambridge | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 617-201 | 3 | Cambridge | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 617-201 | 4 | Cambridge | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 617-201 | 5 | Cambridge | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 617-201 | 6 | Cambridge | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 617-201 | 7 | Cambridge | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 617-201 | 8 | Cambridge | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 617-201 | 9 | Cambridge | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 617-201 | A | Cambridge | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 617-202 | 0 | Brighton | Landline or VoIP | PAETEC ITEL, LLC (829J) | BRTNMACOX1X | 128 | — | — |
| 617-202 | 1 | Brighton | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 617-202 | 2 | Brighton | Landline or VoIP | ONVOY, LLC - MA (892D) | BOSTON | 128 | — | — |
| 617-202 | 3 | Brighton | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - MA (4018) | CAMBRIDGE | 128 | — | — |
| 617-202 | 4 | Brighton | Landline or VoIP | PAETEC ITEL, LLC (829J) | BRTNMACOX5X | 128 | — | — |
| 617-202 | 5 | Brighton | Landline or VoIP | COMCAST IP PHONE, LLC (318J) | NWTNMAWAVMD | 128 | — | — |
| 617-202 | 6 | Brighton | Landline or VoIP | PAETEC ITEL, LLC (829J) | BRTNMACOX5X | 128 | — | — |
| 617-202 | 7 | Brighton | Wireless | ONVOY SPECTRUM, LLC (624H) | CMBRMABENMD | 128 | — | — |
| 617-202 | 8 | Brighton | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 617-202 | 9 | Brighton | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - MA (4018) | CAMBRIDGE | 128 | — | — |
| 617-202 | A | Brighton | Landline or VoIP | PAETEC ITEL, LLC (829J) | BRTNMACOX5X | 128 | — | — |
| 617-203 | 0 | Everett | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MA (990E) | BSTNMABLOMD | 128 | — | — |
| 617-203 | 1 | Everett | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | CHARLTON | 128 | — | — |
| 617-203 | 2 | Everett | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | CHARLTON | 128 | — | — |
| 617-203 | 3 | Everett | Landline or VoIP | PAETEC ITEL, LLC (829J) | BRTNMACOX1X | 128 | — | — |
| 617-203 | 4 | Everett | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | CHARLTON | 128 | — | — |
| 617-203 | 5 | Everett | Landline or VoIP | ONVOY, LLC - MA (892D) | BOSTON | 128 | — | — |
| 617-203 | 6 | Everett | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MA (990E) | BSTNMABLOMD | 128 | — | — |
| 617-203 | 7 | Everett | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MA (990E) | BSTNMABLOMD | 128 | — | — |
| 617-203 | 8 | Everett | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MA (990E) | BSTNMABLOMD | 128 | — | — |
| 617-203 | 9 | Everett | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | CHARLTON | 128 | — | — |
| 617-203 | A | Everett | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | CHARLTON | 128 | — | — |
| 617-204 | A | Boston | Landline | VERIZON NEW ENGLAND INC. (9102) | BOSTON FRANKLIN ST | 128 | — | — |
| 617-205 | A | Boston | Landline or VoIP | NORFOLK COUNTY INTERNET, INC. (6083) | FRANKLIN | 128 | — | — |
| 617-206 | 0 | Brighton | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 617-206 | 1 | Brighton | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - MA (4018) | CAMBRIDGE | 128 | — | — |
| 617-206 | 2 | Brighton | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | CHARLTON | 128 | — | — |
| 617-206 | 3 | Brighton | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - MA (4018) | CAMBRIDGE | 128 | — | — |
| 617-206 | 4 | Brighton | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - MA (4018) | CAMBRIDGE | 128 | — | — |
| 617-206 | 5 | Brighton | Landline or VoIP | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (671J) | CHTWMABF2MD | 128 | — | — |
| 617-206 | 6 | Brighton | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | CHARLTON | 128 | — | — |
| 617-206 | 7 | Brighton | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 617-206 | 8 | Brighton | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 617-206 | 9 | Brighton | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | CHARLTON | 128 | — | — |
| 617-206 | A | Brighton | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | CHARLTON | 128 | — | — |
| 617-207 | 0 | Winthrop | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 617-207 | 1 | Winthrop | Landline or VoIP | COMCAST IP PHONE, LLC (318J) | NWTNMAWAVMD | 128 | — | — |
| 617-207 | 2 | Winthrop | Landline or VoIP | ONVOY, LLC - MA (892D) | BOSTON | 128 | — | — |
| 617-207 | 3 | Winthrop | Landline or VoIP | COMCAST IP PHONE, LLC (318J) | NWTNMAWAVMD | 128 | — | — |
| 617-207 | 4 | Winthrop | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | CHARLTON | 128 | — | — |
| 617-207 | 5 | Winthrop | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - MA (4018) | CAMBRIDGE | 128 | — | — |
| 617-207 | 6 | Winthrop | Landline or VoIP | ONVOY, LLC - MA (892D) | BOSTON | 128 | — | — |
| 617-207 | 7 | Winthrop | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MA (990E) | BSTNMABLOMD | 128 | — | — |
| 617-207 | 8 | Winthrop | Landline or VoIP | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA (268F) | SOMERVILLE | 128 | — | — |
| 617-207 | 9 | Winthrop | Landline or VoIP | COMCAST IP PHONE, LLC (318J) | NWTNMAWAVMD | 128 | — | — |
| 617-207 | A | Winthrop | Landline or VoIP | COMCAST IP PHONE, LLC (318J) | NWTNMAWAVMD | 128 | — | — |
| 617-208 | 0 | Brighton | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | CHARLTON | 128 | — | — |
| 617-208 | 1 | Brighton | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | CHARLTON | 128 | — | — |
| 617-208 | 2 | Brighton | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | CHARLTON | 128 | — | — |
| 617-208 | 3 | Brighton | Landline or VoIP | YMAX COMMUNICATIONS CORP. - MA (316E) | CAMBRIDGE | 128 | — | — |
| 617-208 | 4 | Brighton | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - MA (4018) | CAMBRIDGE | 128 | — | — |
| 617-208 | 5 | Brighton | Landline or VoIP | YMAX COMMUNICATIONS CORP. - MA (316E) | CAMBRIDGE | 128 | — | — |
| 617-208 | 6 | Brighton | Landline or VoIP | COMCAST IP PHONE, LLC (318J) | NWTNMAWAVMD | 128 | — | — |
| 617-208 | 7 | Brighton | Landline or VoIP | YMAX COMMUNICATIONS CORP. - MA (316E) | CAMBRIDGE | 128 | — | — |
| 617-208 | 8 | Brighton | Landline or VoIP | COMCAST IP PHONE, LLC (318J) | NWTNMAWAVMD | 128 | — | — |
| 617-208 | 9 | Brighton | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 617-208 | A | Brighton | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | CHARLTON | 128 | — | — |
| 617-209 | 0 | Belmont | Landline or VoIP | RCN TELECOM SERVICES, INC. - MA (7619) | — | 128 | — | — |
| 617-209 | 1 | Belmont | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - MA (4018) | CAMBRIDGE | 128 | — | — |
| 617-209 | 2 | Belmont | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - MA (4018) | CAMBRIDGE | 128 | — | — |
| 617-209 | 3 | Belmont | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - MA (4018) | CAMBRIDGE | 128 | — | — |
| 617-209 | 4 | Belmont | Landline or VoIP | LEVEL 3 COMMUNICATIONS, LLC - MA (4018) | CAMBRIDGE | 128 | — | — |
| 617-209 | 5 | Belmont | Landline or VoIP | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS (671J) | CHTWMABF2MD | 128 | — | — |
| 617-209 | 6 | Belmont | Landline or VoIP | ONVOY, LLC - MA (892D) | BOSTON | 128 | — | — |
| 617-209 | 7 | Belmont | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | CHARLTON | 128 | — | — |
| 617-209 | 8 | Belmont | Landline or VoIP | RCN TELECOM SERVICES, INC. - MA (7619) | BSTPMALLX1X | 128 | — | — |
| 617-209 | 9 | Belmont | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - MA (990E) | BSTNMABLOMD | 128 | — | — |
| 617-209 | A | Belmont | Landline or VoIP | RCN TELECOM SERVICES, INC. - MA (7619) | BSTPMALLX1X | 128 | — | — |
| 617-210 | 0 | Boston | Landline | VERIZON NEW ENGLAND INC. (9102) | BOSTON HARRISON AVE | 128 | — | — |
| 617-210 | 1 | Boston | Landline | VERIZON NEW ENGLAND INC. (9102) | BOSTON HARRISON AVE | 128 | — | — |
| 617-210 | 2 | Boston | Wireless | ONVOY SPECTRUM, LLC (624H) | CMBRMABENMD | 128 | — | — |
| 617-210 | 3 | Boston | Landline or VoIP | ONVOY, LLC - MA (892D) | BOSTON | 128 | — | — |
| 617-210 | 4 | Boston | Landline | VERIZON NEW ENGLAND INC. (9102) | BOSTON HARRISON AVE | 128 | — | — |
| 617-210 | 5 | Boston | Landline | VERIZON NEW ENGLAND INC. (9102) | BOSTON HARRISON AVE | 128 | — | — |
| 617-210 | 6 | Boston | Landline | VERIZON NEW ENGLAND INC. (9102) | BOSTON HARRISON AVE | 128 | — | — |
| 617-210 | 7 | Boston | Landline | VERIZON NEW ENGLAND INC. (9102) | BOSTON HARRISON AVE | 128 | — | — |
| 617-210 | 8 | Boston | Landline | VERIZON NEW ENGLAND INC. (9102) | BOSTON HARRISON AVE | 128 | — | — |
| 617-210 | 9 | Boston | Landline | VERIZON NEW ENGLAND INC. (9102) | BOSTON HARRISON AVE | 128 | — | — |
| 617-210 | A | Boston | Landline | VERIZON NEW ENGLAND INC. (9102) | BOSTON HARRISON AVE | 128 | — | — |
| 617-212 | 0 | Boston | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 617-212 | 1 | Boston | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 617-212 | 2 | Boston | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 617-212 | 3 | Boston | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 617-212 | 4 | Boston | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 617-212 | 5 | Boston | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 617-212 | 6 | Boston | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 617-212 | 7 | Boston | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 617-212 | 8 | Boston | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
| 617-212 | 9 | Boston | Wireless | OMNIPOINT MIAMI E LICENSE, LLC (6889) | NORTON | 128 | — | — |
Block-level assignments from the North American Numbering Plan administrator, via localcallingguide.com.
Assigned Prefixes
771
Assignment Blocks
4,757
Rate Centers
27
Carriers of Record
37
| Type | Blocks | Share |
|---|---|---|
| Landline | 1,005 | 21% |
| Landline or VoIP | 2,695 | 57% |
| Wireless | 1,057 | 22% |
| Carrier | Blocks |
|---|---|
| VERIZON NEW ENGLAND INC. | 1,005 |
| OMNIPOINT MIAMI E LICENSE, LLC | 444 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 385 |
| BANDWIDTH.COM CLEC, LLC - MA | 350 |
| PAETEC ITEL, LLC | 321 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 319 |
| LEVEL 3 COMMUNICATIONS, LLC - MA | 313 |
| ONVOY, LLC - MA | 299 |
| METROPCS, INC. | 270 |
| TC SYSTEMS, INC. | 222 |
| 27 other carriers | 829 |
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 |
|---|---|---|
| Boston | 276 | 1,385 |
| Cambridge | 112 | 721 |
| Newton | 48 | 318 |
| Quincy | 44 | 334 |
| Brookline | 38 | 227 |
| Brighton | 22 | 152 |
| Dorchester | 22 | 139 |
| Somerville | 21 | 160 |
| Jamaica Plain | 18 | 118 |
| Milton | 17 | 124 |
| Roxbury | 16 | 104 |
| East Boston | 15 | 125 |
| Everett | 15 | 125 |
| Watertown | 15 | 122 |
| Hyde Park | 14 | 124 |
| Charlestown | 13 | 101 |
| South Boston | 13 | 122 |
| Chelsea | 12 | 92 |
| Belmont | 10 | 80 |
| Waltham | 9 | 27 |
| Saugus | 7 | 7 |
| Winthrop | 5 | 41 |
| Dedham | 4 | 4 |
| Malden | 2 | 2 |
| Kingston | 1 | 1 |
| Melrose | 1 | 1 |
| Weymouth | 1 | 1 |
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 617 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. 617 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 617 covers 27 cities and communities in Massachusetts, including Belmont, Boston, Brighton, Brookline, Cambridge, and 22 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 617 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 617 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 + 617 + 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 1 617 XXX XXXX. The country code for both the United States and Canada in NANP is +1.
Format 617 numbers using E.164 notation as required by RFC 3966: prefix with +1 and omit dashes and parentheses (e.g., +16175550100). This format ensures tel: links work correctly on all mobile browsers and VoIP apps. See the tel: URI formatting guide for complete examples.