Phone numbers in Eurekarurl, Montana
Eurekarurl has 3 phone prefixes in area code 406.
Biggest holders: Interbel Tel. Coop, Interbel Telephone Cooperative. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 33%
- Phone company 67%
Every prefix in Eurekarurl
Search the first six digits of a number in this list. If it's here, the number started in Eurekarurl with the carrier shown. If it isn't, check the Montana page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 406-297 | Interbel Telephone Cooperative | Local phone company | – |
| 406-882 | Interbel Tel. Coop | Phone company | – |
| 406-889 | Interbel 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.