Phone numbers in Hampstead, New Hampshire
Hampstead has 4 phone prefixes in area code 603.
Biggest holders: Consolidated Comm Of No. New England-nh, AT&T (local phone), Comcast. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 75%
- Internet / business phone carrier 25%
Every prefix in Hampstead
Search the first six digits of a number in this list. If it's here, the number started in Hampstead with the carrier shown. If it isn't, check the New Hampshire page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 603-329 | Consolidated Comm Of No. New England-nh | Local phone company | – |
| 603-362 | Consolidated Comm Of No. New England-nh | Local phone company | – |
| 603-453 | AT&T (local phone) | Local phone company | – |
| 603-489 | Comcast | 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.