Phone numbers in Medford, Massachusetts
Medford has 29 phone prefixes in area codes 339, 781.
Biggest holders: MCImetro (Verizon Business), Verizon (local phone), T-Mobile (including Sprint). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 24%
- Local phone company 21%
- Internet / business phone carrier 48%
- Phone company 7%
Every prefix in Medford
Search the first six digits of a number in this list. If it's here, the number started in Medford with the carrier shown. If it isn't, check the Massachusetts page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 339-221 | Verizon Wireless | Mobile carrier | 2002 |
| 339-241 | AT&T Mobility | Mobile carrier | 2023 |
| 339-242 | T-Mobile (including Sprint) | Mobile carrier | 2023 |
| 339-545 | Bandwidth | Internet / business phone carrier | 2001 |
| 339-674 | Windstream (PAETEC) | Internet / business phone carrier | 2001 |
| 781-219 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 781-306 | Verizon (local phone) | Local phone company | – |
| 781-350 | Tc Systems | Phone company | – |
| 781-391 | Verizon (local phone) | Local phone company | – |
| 781-393 | Verizon (local phone) | Local phone company | – |
| 781-395 | Verizon (local phone) | Local phone company | – |
| 781-396 | Verizon (local phone) | Local phone company | – |
| 781-475 | Windstream (PAETEC) | Internet / business phone carrier | 2001 |
| 781-498 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 781-518 | Level 3 (Lumen) | Internet / business phone carrier | 2001 |
| 781-526 | T-Mobile (including Sprint) | Mobile carrier | – |
| 781-539 | Rcn Telecom Services | Phone company | – |
| 781-628 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 781-655 | Verizon (local phone) | Local phone company | – |
| 781-658 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 781-723 | MCImetro (Verizon Business) | Internet / business phone carrier | 2013 |
| 781-827 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 781-866 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 781-874 | Comcast | Internet / business phone carrier | – |
| 781-921 | T-Mobile (including Sprint) | Mobile carrier | 2022 |
| 781-946 | MCImetro (Verizon Business) | Internet / business phone carrier | 2023 |
| 781-957 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 781-960 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 781-991 | AT&T Mobility | Mobile carrier | 2024 |
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.