Phone numbers in New Boston, New Hampshire
New Boston has 4 phone prefixes in area code 603.
Biggest holders: T-Mobile (including Sprint), MCImetro (Verizon Business), Consolidated Comm Of No. New England-nh. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 25%
- Local phone company 25%
- Internet / business phone carrier 50%
Every prefix in New Boston
Search the first six digits of a number in this list. If it's here, the number started in New Boston with the carrier shown. If it isn't, check the New Hampshire page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 603-265 | T-Mobile (including Sprint) | Mobile carrier | – |
| 603-325 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 603-487 | Consolidated Comm Of No. New England-nh | Local phone company | – |
| 603-741 | 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.