Phone numbers in Millersburg, Indiana
Millersburg has 4 phone prefixes in area code 574.
Biggest holders: Level 3 (Lumen), Fbn Indiana, Indigital Telecom. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 25%
- Internet / business phone carrier 25%
- Phone company 50%
Every prefix in Millersburg
Search the first six digits of a number in this list. If it's here, the number started in Millersburg with the carrier shown. If it isn't, check the Indiana page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 574-330 | Level 3 (Lumen) | Internet / business phone carrier | 2005 |
| 574-362 | Fbn Indiana | Phone company | 2004 |
| 574-641 | Indigital Telecom | Phone company | 2006 |
| 574-642 | Brightspeed Of Indiana | Local phone company | – |
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.