Phone numbers in Milford, New Hampshire
Milford has 11 phone prefixes in area code 603.
Biggest holders: Consolidated Comm Of No. New England-nh, Bell Atlantic Mobile, Comcast. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 45%
- Local phone company 27%
- Internet / business phone carrier 27%
Every prefix in Milford
Search the first six digits of a number in this list. If it's here, the number started in Milford with the carrier shown. If it isn't, check the New Hampshire page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 603-213 | Comcast | Internet / business phone carrier | 2012 |
| 603-249 | Consolidated Comm Of No. New England-nh | Local phone company | – |
| 603-316 | Bell Atlantic Mobile | Mobile carrier | 2017 |
| 603-554 | UScellular | Mobile carrier | – |
| 603-633 | Bell Atlantic Mobile | Mobile carrier | 2022 |
| 603-672 | Consolidated Comm Of No. New England-nh | Local phone company | – |
| 603-673 | Consolidated Comm Of No. New England-nh | Local phone company | – |
| 603-721 | MetroPCS (T-Mobile) | Mobile carrier | 2002 |
| 603-732 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 603-769 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 603-801 | Bell Atlantic Mobile | Mobile carrier | 2001 |
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.