Phone numbers in Sudbury, Massachusetts
Sudbury has 14 phone prefixes in area code 978.
Biggest holders: Verizon (local phone), Bandwidth, Nep. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 7%
- Local phone company 36%
- Internet / business phone carrier 36%
- Paging service 7%
- Phone company 14%
Every prefix in Sudbury
Search the first six digits of a number in this list. If it's here, the number started in Sudbury with the carrier shown. If it isn't, check the Massachusetts page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 978-209 | Bandwidth | Internet / business phone carrier | – |
| 978-217 | Nep | Phone company | 2003 |
| 978-218 | Tc Systems | Phone company | – |
| 978-261 | Bandwidth | Internet / business phone carrier | – |
| 978-295 | Bandwidth | Internet / business phone carrier | – |
| 978-366 | American Messaging Services | Paging service | – |
| 978-440 | Verizon (local phone) | Local phone company | – |
| 978-443 | Verizon (local phone) | Local phone company | – |
| 978-445 | Verizon (local phone) | Local phone company | – |
| 978-460 | Verizon Wireless | Mobile carrier | 2002 |
| 978-507 | Verizon (local phone) | Local phone company | – |
| 978-579 | Verizon (local phone) | Local phone company | – |
| 978-639 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 978-917 | Onvoy | 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.