Phone numbers in Leominster, Massachusetts
Leominster has 23 phone prefixes in area codes 351, 978.
Biggest holders: MetroPCS (T-Mobile), Verizon (local phone), Windstream (PAETEC). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 43%
- Local phone company 22%
- Internet / business phone carrier 30%
- Phone company 4%
Every prefix in Leominster
Search the first six digits of a number in this list. If it's here, the number started in Leominster with the carrier shown. If it isn't, check the Massachusetts page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 351-230 | MetroPCS (T-Mobile) | Mobile carrier | 2022 |
| 351-356 | Fractel | Internet / business phone carrier | 2020 |
| 978-227 | Tc Systems | Phone company | – |
| 978-230 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 978-235 | T-Mobile (including Sprint) | Mobile carrier | – |
| 978-401 | Level 3 (Lumen) | Internet / business phone carrier | 2001 |
| 978-466 | Verizon (local phone) | Local phone company | – |
| 978-514 | Verizon (local phone) | Local phone company | – |
| 978-534 | Verizon (local phone) | Local phone company | – |
| 978-537 | Verizon (local phone) | Local phone company | – |
| 978-549 | AT&T Mobility | Mobile carrier | – |
| 978-660 | Verizon Wireless | Mobile carrier | 2001 |
| 978-728 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 978-751 | MetroPCS (T-Mobile) | Mobile carrier | 2010 |
| 978-786 | Bandwidth | Internet / business phone carrier | – |
| 978-798 | AT&T Mobility | Mobile carrier | 2002 |
| 978-833 | MetroPCS (T-Mobile) | Mobile carrier | 2002 |
| 978-840 | Verizon (local phone) | Local phone company | – |
| 978-847 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 978-860 | MCImetro (Verizon Business) | Internet / business phone carrier | 2001 |
| 978-870 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 978-962 | MetroPCS (T-Mobile) | Mobile carrier | 2016 |
| 978-990 | Verizon Wireless | Mobile carrier | 2015 |
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.