Phone numbers in Littleton, New Hampshire
Littleton has 6 phone prefixes in area code 603.
Biggest holders: Level 3 (Lumen), Consolidated Comm Of No. New England-nh, MCImetro (Verizon Business). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 33%
- Local phone company 17%
- Internet / business phone carrier 33%
- Phone company 17%
Every prefix in Littleton
Search the first six digits of a number in this list. If it's here, the number started in Littleton with the carrier shown. If it isn't, check the New Hampshire page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 603-259 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 603-444 | Consolidated Comm Of No. New England-nh | Local phone company | – |
| 603-575 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 603-616 | UScellular | Mobile carrier | – |
| 603-761 | Freedom Ring Communications | Phone company | – |
| 603-991 | Bell Atlantic 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.