Phone numbers in Derry, New Hampshire
Derry has 29 phone prefixes in area code 603.
Biggest holders: Consolidated Comm Of No. New England-nh, T-Mobile (including Sprint), AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 48%
- Local phone company 28%
- Internet / business phone carrier 24%
Every prefix in Derry
Search the first six digits of a number in this list. If it's here, the number started in Derry with the carrier shown. If it isn't, check the New Hampshire page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 603-207 | Onvoy | Internet / business phone carrier | 2022 |
| 603-216 | Comcast | Internet / business phone carrier | – |
| 603-231 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 603-234 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 603-235 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 603-247 | AT&T Mobility | Mobile carrier | – |
| 603-260 | Comcast | Internet / business phone carrier | 2013 |
| 603-275 | T-Mobile (including Sprint) | Mobile carrier | – |
| 603-339 | AT&T Mobility | Mobile carrier | – |
| 603-404 | Bell Atlantic Mobile | Mobile carrier | 2016 |
| 603-421 | Consolidated Comm Of No. New England-nh | Local phone company | – |
| 603-425 | Consolidated Comm Of No. New England-nh | Local phone company | – |
| 603-426 | Consolidated Comm Of No. New England-nh | Local phone company | – |
| 603-432 | Consolidated Comm Of No. New England-nh | Local phone company | – |
| 603-434 | Consolidated Comm Of No. New England-nh | Local phone company | – |
| 603-437 | Consolidated Comm Of No. New England-nh | Local phone company | – |
| 603-479 | AT&T Mobility | Mobile carrier | – |
| 603-490 | Bell Atlantic Mobile | Mobile carrier | – |
| 603-505 | Bell Atlantic Mobile | Mobile carrier | 2002 |
| 603-537 | Consolidated Comm Of No. New England-nh | Local phone company | – |
| 603-548 | Bell Atlantic Mobile | Mobile carrier | – |
| 603-549 | Consolidated Comm Of No. New England-nh | Local phone company | – |
| 603-552 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 603-553 | AT&T Mobility | Mobile carrier | – |
| 603-571 | AT&T Mobility | Mobile carrier | – |
| 603-704 | Teleport Communications America | Internet / business phone carrier | – |
| 603-818 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 603-845 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 603-965 | Windstream (PAETEC) | 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.