Phone numbers in Clayton, Indiana
Clayton has 4 phone prefixes in area codes 317, 463.
Biggest holders: Onvoy, Communications Corp. Of Indiana, Fractel. This is the local calling area (rate center) where those prefixes were first assigned.
- Internet / business phone carrier 75%
- Phone company 25%
Every prefix in Clayton
Search the first six digits of a number in this list. If it's here, the number started in Clayton with the carrier shown. If it isn't, check the Indiana page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 317-539 | Communications Corp. Of Indiana | Phone company | – |
| 463-226 | Onvoy | Internet / business phone carrier | 2020 |
| 463-342 | Onvoy | Internet / business phone carrier | 2026 |
| 463-356 | Fractel | Internet / business phone carrier | 2021 |
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.