Area Code 406 — Carriers, Line Types & Portability
Carrier breakdown and line-type data for area code 406 (MT), across 504 analyzed numbers. Useful for bulk-validating 406 calling lists and spotting VoIP/ported numbers before you dial or text.
Carriers in area code 406
| Carrier | Numbers analyzed |
|---|---|
| Verizon Wireless | 364 |
| AT&T | 82 |
| T-Mobile | 48 |
| Sagebrush Cellular | 8 |
| Bandwidth.com | 1 |
| CenturyLink | 1 |
Line types in 406
| Line type | Numbers analyzed |
|---|---|
| WIRELESS | 502 |
| CLEC | 1 |
| ILEC | 1 |
Top rate centers
| Rate center | Numbers analyzed |
|---|---|
| BILLINGS | 89 |
| MISSOULA | 77 |
| BOZEMAN | 60 |
| KALISPELL | 51 |
| GREATFALLS | 43 |
| HELENA | 35 |
| BUTTE | 19 |
| SIDNEY | 13 |
Enrich or scrub your area code 406 list at scale
Upload a list and get carrier, line type, LRN/portability, and DNC/TCPA risk on every number — not one lookup at a time. That's what VeriRoute Intel is built for.
Bulk lookup & list scrubbing → · Start free (1,000 lookups/month)