Phone numbers in Keene, New Hampshire
Keene has 17 phone prefixes in area code 603.
Biggest holders: Consolidated Comm Of No. New England-nh, Windstream (PAETEC), UScellular. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 29%
- Local phone company 29%
- Internet / business phone carrier 29%
- Phone company 12%
Every prefix in Keene
Search the first six digits of a number in this list. If it's here, the number started in Keene with the carrier shown. If it isn't, check the New Hampshire page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 603-209 | UScellular | Mobile carrier | – |
| 603-283 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 603-313 | UScellular | Mobile carrier | – |
| 603-338 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 603-352 | Consolidated Comm Of No. New England-nh | Local phone company | – |
| 603-354 | Consolidated Comm Of No. New England-nh | Local phone company | – |
| 603-355 | Consolidated Comm Of No. New England-nh | Local phone company | – |
| 603-357 | Fidium Enterprise Services | Phone company | – |
| 603-358 | Consolidated Comm Of No. New England-nh | Local phone company | – |
| 603-439 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 603-499 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 603-719 | Freedom Ring Communications | Phone company | – |
| 603-757 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 603-762 | Bell Atlantic Mobile | Mobile carrier | – |
| 603-803 | CenturyLink / Lumen | Local phone company | 2016 |
| 603-852 | T-Mobile (including Sprint) | Mobile carrier | – |
| 603-903 | Bell Atlantic Mobile | Mobile 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.