Phone numbers in Twelve Mile, Indiana
Twelve Mile has 3 phone prefixes in area code 574.
Biggest holders: Onvoy, Brightspeed Of Indiana, Fractel. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 33%
- Internet / business phone carrier 67%
Every prefix in Twelve Mile
Search the first six digits of a number in this list. If it's here, the number started in Twelve Mile with the carrier shown. If it isn't, check the Indiana page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 574-319 | Onvoy | Internet / business phone carrier | 2016 |
| 574-664 | Brightspeed Of Indiana | Local phone company | – |
| 574-944 | Fractel | Internet / business phone carrier | 2020 |
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.