Phone numbers in Conrad, Montana
Conrad has 5 phone prefixes in area code 406.
Biggest holders: AT&T Mobility, 3 Rivers Telephone Cooperative, CenturyLink / Lumen. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 60%
- Local phone company 40%
Every prefix in Conrad
Search the first six digits of a number in this list. If it's here, the number started in Conrad with the carrier shown. If it isn't, check the Montana page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 406-271 | 3 Rivers Telephone Cooperative | Local phone company | – |
| 406-278 | CenturyLink / Lumen | Local phone company | – |
| 406-289 | AT&T Mobility | Mobile carrier | – |
| 406-505 | AT&T Mobility | Mobile carrier | 2010 |
| 406-576 | 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.