Phone numbers in Clarksville, Ohio
Clarksville has 4 phone prefixes in area code 937.
Biggest holders: Level 3 (Lumen), Frontier. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 25%
- Internet / business phone carrier 75%
Every prefix in Clarksville
Search the first six digits of a number in this list. If it's here, the number started in Clarksville with the carrier shown. If it isn't, check the Ohio page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 937-289 | Frontier | Local phone company | – |
| 937-501 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 937-574 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 937-577 | Level 3 (Lumen) | Internet / business phone 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.