Phone numbers in Granville, Ohio
Granville has 4 phone prefixes in area code 740.
Biggest holders: Windstream Ohio, Onvoy, Charter / Spectrum. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 50%
- Internet / business phone carrier 50%
Every prefix in Granville
Search the first six digits of a number in this list. If it's here, the number started in Granville with the carrier shown. If it isn't, check the Ohio page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 740-321 | Windstream Ohio | Local phone company | – |
| 740-587 | Windstream Ohio | Local phone company | – |
| 740-880 | Onvoy | Internet / business phone carrier | 2016 |
| 740-920 | Charter / Spectrum | Internet / business phone carrier | 2005 |
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.