Phone numbers in Frankfort, Indiana
Frankfort has 12 phone prefixes in area code 765.
Biggest holders: AT&T (local phone), Verizon Wireless, Onvoy. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 42%
- Local phone company 25%
- Internet / business phone carrier 33%
Every prefix in Frankfort
Search the first six digits of a number in this list. If it's here, the number started in Frankfort with the carrier shown. If it isn't, check the Indiana page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 765-242 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 765-357 | Verizon Wireless | Mobile carrier | – |
| 765-601 | Onvoy | Internet / business phone carrier | – |
| 765-605 | AT&T Mobility | Mobile carrier | – |
| 765-650 | AT&T Mobility | Mobile carrier | 2001 |
| 765-652 | Verizon Wireless | Mobile carrier | – |
| 765-654 | AT&T (local phone) | Local phone company | – |
| 765-656 | AT&T (local phone) | Local phone company | – |
| 765-659 | AT&T (local phone) | Local phone company | – |
| 765-670 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 765-695 | Onvoy | Internet / business phone carrier | 2021 |
| 765-972 | TON80 Communications | Internet / business phone carrier | 2022 |
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.