Phone numbers in Gloucester, Massachusetts
Gloucester has 17 phone prefixes in area codes 351, 508, 978.
Biggest holders: Verizon (local phone), T-Mobile (including Sprint), AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 29%
- Local phone company 24%
- Internet / business phone carrier 41%
- Phone company 6%
Every prefix in Gloucester
Search the first six digits of a number in this list. If it's here, the number started in Gloucester with the carrier shown. If it isn't, check the Massachusetts page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 351-217 | T-Mobile (including Sprint) | Mobile carrier | 2021 |
| 351-231 | T-Mobile (including Sprint) | Mobile carrier | 2022 |
| 351-344 | Onvoy | Internet / business phone carrier | 2021 |
| 508-284 | AT&T Mobility | Mobile carrier | – |
| 978-231 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 978-281 | Verizon (local phone) | Local phone company | – |
| 978-282 | Verizon (local phone) | Local phone company | – |
| 978-283 | Verizon (local phone) | Local phone company | – |
| 978-290 | Verizon Wireless | Mobile carrier | 2002 |
| 978-325 | AT&T Mobility | Mobile carrier | – |
| 978-381 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 978-491 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 978-515 | Peerless Network Of Massachusetts | Internet / business phone carrier | – |
| 978-559 | Tc Systems | Phone company | – |
| 978-675 | Verizon (local phone) | Local phone company | – |
| 978-865 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 978-879 | Windstream (PAETEC) | Internet / business phone carrier | – |
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number. Source: NANPA central office code records, 2026-10-10.