Phone numbers in Greenfield, New Hampshire
Greenfield has 3 phone prefixes in area code 603.
Biggest holders: Bell Atlantic Mobile, Consolidated Comm Of No. New England-nh. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 67%
- Local phone company 33%
Every prefix in Greenfield
Search the first six digits of a number in this list. If it's here, the number started in Greenfield with the carrier shown. If it isn't, check the New Hampshire page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 603-547 | Consolidated Comm Of No. New England-nh | Local phone company | – |
| 603-831 | Bell Atlantic Mobile | Mobile carrier | 2004 |
| 603-933 | Bell Atlantic Mobile | Mobile carrier | 2008 |
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.