Phone numbers in Flat Rock, Indiana
Flat Rock has 4 phone prefixes in area codes 812, 930.
Biggest holders: T-Mobile (including Sprint), Level 3 (Lumen), AT&T (local phone). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 50%
- Local phone company 25%
- Internet / business phone carrier 25%
Every prefix in Flat Rock
Search the first six digits of a number in this list. If it's here, the number started in Flat Rock with the carrier shown. If it isn't, check the Indiana page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 812-302 | Level 3 (Lumen) | Internet / business phone carrier | 2001 |
| 812-581 | T-Mobile (including Sprint) | Mobile carrier | – |
| 812-587 | AT&T (local phone) | Local phone company | – |
| 930-253 | T-Mobile (including Sprint) | Mobile 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.