Phone numbers in Greenfield, Ohio
Greenfield has 4 phone prefixes in area code 937.
Biggest holders: Horizon Services, Tier 2 Communications, T-Mobile (including Sprint). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 25%
- Local phone company 25%
- Phone company 50%
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 Ohio page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 937-803 | Horizon Services | Phone company | 2012 |
| 937-868 | Tier 2 Communications | Phone company | 2006 |
| 937-876 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 937-981 | Frontier | Local phone company | – |
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.