Phone numbers in Sunapee, New Hampshire
Sunapee has 5 phone prefixes in area code 603.
Biggest holders: TDS Metrocom, UScellular, Consolidated Comm Of No. New England-nh. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 20%
- Local phone company 20%
- Internet / business phone carrier 40%
- Phone company 20%
Every prefix in Sunapee
Search the first six digits of a number in this list. If it's here, the number started in Sunapee with the carrier shown. If it isn't, check the New Hampshire page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 603-414 | TDS Metrocom | Phone company | – |
| 603-454 | UScellular | Mobile carrier | – |
| 603-763 | Consolidated Comm Of No. New England-nh | Local phone company | – |
| 603-829 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 603-873 | Level 3 (Lumen) | 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.