Phone numbers in Haverhill, Massachusetts
Haverhill has 30 phone prefixes in area codes 351, 978.
Biggest holders: T-Mobile (including Sprint), Verizon (local phone), Verizon Wireless. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 47%
- Local phone company 20%
- Internet / business phone carrier 27%
- Phone company 7%
Every prefix in Haverhill
Search the first six digits of a number in this list. If it's here, the number started in Haverhill with the carrier shown. If it isn't, check the Massachusetts page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 351-215 | AT&T Mobility | Mobile carrier | 2019 |
| 351-234 | Fractel | Internet / business phone carrier | 2021 |
| 351-353 | Onvoy | Internet / business phone carrier | 2021 |
| 351-588 | TON80 Communications | Internet / business phone carrier | 2022 |
| 978-228 | T-Mobile (including Sprint) | Mobile carrier | 2008 |
| 978-241 | Tc Systems | Phone company | – |
| 978-351 | Verizon Wireless | Mobile carrier | 2023 |
| 978-360 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 978-361 | T-Mobile (including Sprint) | Mobile carrier | – |
| 978-372 | Verizon (local phone) | Local phone company | – |
| 978-373 | Verizon (local phone) | Local phone company | – |
| 978-374 | Verizon (local phone) | Local phone company | – |
| 978-377 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 978-420 | Windstream (PAETEC) | Internet / business phone carrier | 2001 |
| 978-457 | T-Mobile (including Sprint) | Mobile carrier | – |
| 978-469 | Verizon (local phone) | Local phone company | – |
| 978-476 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 978-478 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 978-519 | Airus | Phone company | 2016 |
| 978-521 | Verizon (local phone) | Local phone company | – |
| 978-556 | Verizon (local phone) | Local phone company | – |
| 978-641 | T-Mobile (including Sprint) | Mobile carrier | 2012 |
| 978-702 | MCImetro (Verizon Business) | Internet / business phone carrier | 2001 |
| 978-872 | AT&T Mobility | Mobile carrier | 2014 |
| 978-891 | Verizon Wireless | Mobile carrier | 2010 |
| 978-912 | T-Mobile (including Sprint) | Mobile carrier | – |
| 978-914 | Verizon Wireless | Mobile carrier | 2006 |
| 978-945 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 978-971 | Verizon Wireless | Mobile carrier | 2015 |
| 978-994 | Verizon Wireless | Mobile carrier | 2002 |
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.