Phone numbers in Exeter, New Hampshire
Exeter has 15 phone prefixes in area code 603.
Biggest holders: Consolidated Comm Of No. New England-nh, Bell Atlantic Mobile, MCImetro (Verizon Business). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 27%
- Local phone company 33%
- Internet / business phone carrier 33%
- Phone company 7%
Every prefix in Exeter
Search the first six digits of a number in this list. If it's here, the number started in Exeter with the carrier shown. If it isn't, check the New Hampshire page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 603-395 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 603-418 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 603-519 | Bell Atlantic Mobile | Mobile carrier | 2018 |
| 603-580 | Comcast | Internet / business phone carrier | – |
| 603-583 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 603-658 | Freedom Ring Communications | Phone company | – |
| 603-686 | Bell Atlantic Mobile | Mobile carrier | 2002 |
| 603-691 | Commio | Internet / business phone carrier | – |
| 603-770 | Bell Atlantic Mobile | Mobile carrier | – |
| 603-772 | Consolidated Comm Of No. New England-nh | Local phone company | – |
| 603-773 | Consolidated Comm Of No. New England-nh | Local phone company | – |
| 603-775 | Consolidated Comm Of No. New England-nh | Local phone company | – |
| 603-777 | Consolidated Comm Of No. New England-nh | Local phone company | – |
| 603-778 | Consolidated Comm Of No. New England-nh | Local phone company | – |
| 603-793 | MetroPCS (T-Mobile) | Mobile carrier | 2002 |
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.