Phone numbers in Thompson Falls, Montana
Thompson Falls has 3 phone prefixes in area code 406.
Biggest holders: AT&T Mobility, Western Montana Communitytel, Blackfoot Tel. Coop. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 33%
- Phone company 67%
Every prefix in Thompson Falls
Search the first six digits of a number in this list. If it's here, the number started in Thompson Falls with the carrier shown. If it isn't, check the Montana page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 406-242 | AT&T Mobility | Mobile carrier | 2003 |
| 406-615 | Western Montana Communitytel | Phone company | 2014 |
| 406-827 | Blackfoot Tel. Coop | 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.