Phone numbers in Montgomery, Indiana
Montgomery has 3 phone prefixes in area code 812.
Biggest holders: Rtc Communications, Verizon Wireless. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 33%
- Phone company 67%
Every prefix in Montgomery
Search the first six digits of a number in this list. If it's here, the number started in Montgomery with the carrier shown. If it isn't, check the Indiana page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 812-444 | Rtc Communications | Phone company | – |
| 812-486 | Rtc Communications | Phone company | – |
| 812-787 | Verizon Wireless | Mobile carrier | 2004 |
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.