Phone numbers in West Glendive, Montana
West Glendive has 4 phone prefixes in area code 406.
Biggest holders: Verizon Wireless, Mid-rivers Tel. Coop, AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 75%
- Phone company 25%
Every prefix in West Glendive
Search the first six digits of a number in this list. If it's here, the number started in West Glendive with the carrier shown. If it isn't, check the Montana page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 406-687 | Mid-rivers Tel. Coop | Phone company | – |
| 406-939 | Verizon Wireless | Mobile carrier | – |
| 406-941 | Verizon Wireless | Mobile carrier | – |
| 406-989 | AT&T Mobility | Mobile carrier | – |
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.