Montana
Area code 406
Area code 406 covers Billings, Missoula, Helena, Great Falls, Bozeman and more in Montana, in the Mountain time zone. It has been in service since 1947.
Most reported 406 numbers
Carriers in 406
Line types
Counted over the exchanges, from the carrier each was assigned to.
Cities in area code 406
Every 406 exchange
The first six digits of a number. Each one with 3 or more flagged numbers has its own page: who it was assigned to and the numbers in it.
| Exchange | City | Carrier | Type | Flagged |
|---|---|---|---|---|
| 406-200 | Billings | AT&T | VoIP | 0 |
| 406-201 | Forsyth | AT&T Mobility | Wireless | 1 |
| 406-202 | Helena | AT&T Mobility | Wireless | 0 |
| 406-203 | Missoula | Lumen (Level 3) | VoIP | 0 |
| 406-204 | Helena | Lumen (Level 3) | VoIP | 0 |
| 406-205 | Great Falls | Lumen (Level 3) | VoIP | 1 |
| 406-206 | Billings | Lumen (Level 3) | VoIP | 0 |
| 406-207 | Missoula | AT&T Mobility | Wireless | 0 |
| 406-208 | Billings | AT&T Mobility | Wireless | 0 |
| 406-209 | Bozeman | AT&T Mobility | Wireless | 0 |
| 406-210 | Verizon Wireless | Wireless | 0 | |
| 406-212 | Kalispell | AT&T Mobility | Wireless | 0 |
| 406-213 | Colstrip | Lumen (Level 3) | VoIP | 0 |
| 406-214 | Missoula | Verizon Wireless | Wireless | 0 |
| 406-215 | Missoula | Skyetel | Landline | 0 |
| 406-216 | Great Falls | 3 Rivers Telephone Cooperative | Landline | 0 |
| 406-217 | Great Falls | Verizon Wireless | Wireless | 0 |
| 406-218 | Missoula | T-Mobile | Wireless | 0 |
| 406-219 | Bozeman | Bandwidth | VoIP | 0 |
| 406-220 | Livingston | AT&T Mobility | Wireless | 0 |
| 406-221 | Butte-Silver Bow | Onvoy (Sinch) | VoIP | 0 |
| 406-222 | Livingston | Lumen (CenturyLink) | Landline | 0 |
| 406-223 | Livingston | Verizon Wireless | Wireless | 0 |
| 406-224 | Livingston | Verizon Wireless | Wireless | 0 |
| 406-225 | Boulder | Lumen (CenturyLink) | Landline | 0 |
| 406-226 | Lumen (CenturyLink) | Landline | 0 | |
| 406-227 | Helena | Lumen (CenturyLink) | Landline | 0 |
| 406-228 | Glasgow | Nemont Tel Coop | Landline | 0 |
| 406-229 | Cut Bank | AT&T Mobility | Wireless | 0 |
| 406-230 | Glasgow | Verizon Wireless | Wireless | 0 |
| 406-231 | Great Falls | AT&T Mobility | Wireless | 0 |
| 406-232 | Miles City | Lumen (CenturyLink) | Landline | 0 |
| 406-233 | Miles City | Lumen (CenturyLink) | Landline | 0 |
| 406-234 | Miles City | Mid-Rivers Telephone Cooperative | Landline | 0 |
| 406-235 | Wolf Point | Lumen (CenturyLink) | Landline | 0 |
| 406-236 | Neihart | 3 Rivers Tel. Coop | Landline | 0 |
| 406-237 | Billings | Lumen (CenturyLink) | Landline | 0 |
| 406-238 | Billings | Lumen (CenturyLink) | Landline | 0 |
| 406-239 | Missoula | AT&T Mobility | Wireless | 0 |
| 406-240 | Missoula | AT&T Mobility | Wireless | 0 |
| 406-241 | Missoula | AT&T Mobility | Wireless | 0 |
| 406-242 | Thompson Falls | AT&T Mobility | Wireless | 0 |
| 406-243 | Missoula | Lumen (CenturyLink) | Landline | 0 |
| 406-244 | Potomac | Blackfoot Tel. Coop | Landline | 0 |
| 406-245 | Billings | Lumen (CenturyLink) | Landline | 0 |
| 406-246 | Dixon | Blackfoot Tel. Coop | Landline | 0 |
| 406-247 | Billings | Lumen (CenturyLink) | Landline | 0 |
| 406-248 | Billings | Lumen (CenturyLink) | Landline | 0 |
| 406-249 | Kalispell | Verizon Wireless | Wireless | 0 |
| 406-250 | Kalispell | Verizon Wireless | Wireless | 0 |
| 406-251 | Missoula | Lumen (CenturyLink) | Landline | 0 |
| 406-252 | Billings | Lumen (CenturyLink) | Landline | 0 |
| 406-253 | Kalispell | AT&T Mobility | Wireless | 0 |
| 406-254 | Billings | Lumen (CenturyLink) | Landline | 0 |
| 406-255 | Billings | Lumen (CenturyLink) | Landline | 0 |
| 406-256 | Billings | Lumen (CenturyLink) | Landline | 0 |
| 406-257 | Kalispell | Lumen (CenturyLink) | Landline | 0 |
| 406-258 | Missoula | Lumen (CenturyLink) | Landline | 0 |
| 406-259 | Billings | Lumen (CenturyLink) | Landline | 0 |
| 406-260 | Kalispell | AT&T Mobility | Wireless | 0 |
| 406-261 | Kalispell | AT&T Mobility | Wireless | 0 |
| 406-262 | Havre | Lumen (CenturyLink) | Landline | 0 |
| 406-263 | Glasgow | Sagebrush Cellular | Wireless | 0 |
| 406-264 | Forsyth | 3 Rivers Tel. Coop | Landline | 0 |
| 406-265 | Havre | Lumen (CenturyLink) | Landline | 0 |
| 406-266 | Townsend | Lumen (CenturyLink) | Landline | 0 |
| 406-267 | Divide | Southern Montana Tel | Landline | 0 |
| 406-268 | Great Falls | Lumen (CenturyLink) | Landline | 0 |
| 406-269 | St Regis | AT&T Mobility | Wireless | 0 |
| 406-270 | Kalispell | Verizon Wireless | Wireless | 0 |
| 406-271 | Conrad | 3 Rivers Telephone Cooperative | Landline | 1 |
| 406-272 | Billings | Onvoy (Sinch) | VoIP | 0 |
| 406-273 | Missoula | Lumen (CenturyLink) | Landline | 0 |
| 406-274 | Missoula | AT&T | VoIP | 0 |
| 406-275 | Pablo | Ronan Tel | Landline | 0 |
| 406-276 | Lima | 3 Rivers Tel. Coop | Landline | 0 |
| 406-277 | Belt | 3 Rivers Tel. Coop | Landline | 0 |
| 406-278 | Conrad | Lumen (CenturyLink) | Landline | 0 |
| 406-279 | Valier | 3 Rivers Tel. Coop | Landline | 0 |
| 406-280 | St Regis | AT&T Mobility | Wireless | 0 |
| 406-281 | Billings | AT&T | VoIP | 0 |
| 406-282 | Manhattan | Lumen (CenturyLink) | Landline | 0 |
| 406-283 | Libby | Ziply Fiber | Landline | 0 |
| 406-284 | Manhattan | Lumen (CenturyLink) | Landline | 0 |
| 406-285 | Three Forks | Lumen (CenturyLink) | Landline | 0 |
| 406-286 | Reserve | Nemont Tel Coop | Landline | 0 |
| 406-287 | Whitehall | Lumen (CenturyLink) | Landline | 0 |
| 406-288 | Drummond | Blackfoot Tel. Coop | Landline | 0 |
| 406-289 | Conrad | AT&T Mobility | Wireless | 0 |
| 406-290 | Columbus | Onvoy (Sinch) | VoIP | 0 |
| 406-291 | Libby | Verizon Wireless | Wireless | 0 |
| 406-292 | Joplin | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-293 | Libby | Ziply Fiber | Landline | 0 |
| 406-294 | Billings | Allstream | Landline | 0 |
| 406-295 | Troy | Ziply Fiber | Landline | 0 |
| 406-296 | Eureka | Ziply Fiber | Landline | 0 |
| 406-297 | Interbel Telephone Cooperative | Landline | 0 | |
| 406-298 | Columbus | Verizon Wireless | Wireless | 0 |
| 406-299 | Butte-Silver Bow | Lumen (Level 3) | VoIP | 0 |
| 406-300 | Kalispell | Charter IP Enabled Services | Landline | 0 |
| 406-301 | Malta | Verizon Wireless | Wireless | 0 |
| 406-302 | Wolf Point | Onvoy (Sinch) | VoIP | 0 |
| 406-303 | Missoula | AT&T | VoIP | 0 |
| 406-304 | Missoula | T-Mobile | Wireless | 0 |
| 406-305 | White Sulphur Springs | AT&T Mobility | Wireless | 0 |
| 406-306 | Manhattan | Onvoy (Sinch) | VoIP | 5 |
| 406-307 | Canyon Crk | Charter IP Enabled Services | Landline | 0 |
| 406-308 | Cascade | Verizon Wireless | Wireless | 0 |
| 406-309 | Kalispell | Charter IP Enabled Services | Landline | 0 |
| 406-310 | Butte-Silver Bow | Blackfoot Communications | Landline | 0 |
| 406-312 | Bozeman | Nuso | Landline | 0 |
| 406-313 | Boulder | Onvoy (Sinch) | VoIP | 0 |
| 406-314 | Kalispell | AT&T Mobility | Wireless | 0 |
| 406-315 | Great Falls | Sagebrush Cellular | Wireless | 0 |
| 406-316 | Boulder | Onvoy (Sinch) | VoIP | 0 |
| 406-317 | Missoula | Telnyx | VoIP | 0 |
| 406-318 | Billings | Onvoy (Sinch) | VoIP | 0 |
| 406-319 | Polson | Charter IP Enabled Services | Landline | 0 |
| 406-320 | Roundup | Verizon Wireless | Wireless | 0 |
| 406-321 | Columbus | AT&T Mobility | Wireless | 0 |
| 406-322 | Columbus | Lumen (CenturyLink) | Landline | 0 |
| 406-323 | Roundup | Mid-Rivers Tel. Coop | Landline | 0 |
| 406-324 | Helena | Lumen (CenturyLink) | Landline | 0 |
| 406-325 | Billings | Nuso | Landline | 0 |
| 406-326 | Reedpoint | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-327 | Missoula | Lumen (CenturyLink) | Landline | 0 |
| 406-328 | Absarokee | Project Tel | Landline | 0 |
| 406-329 | Missoula | Lumen (CenturyLink) | Landline | 0 |
| 406-330 | Clinton | Charter IP Enabled Services | Landline | 0 |
| 406-331 | Roundup | Verizon Wireless | Wireless | 0 |
| 406-332 | Pablo | Blackfoot Tel. Coop | Landline | 0 |
| 406-333 | Livingston | Lumen (CenturyLink) | Landline | 0 |
| 406-334 | Libby | AT&T Mobility | Wireless | 0 |
| 406-335 | Northern Tel. Coop | Landline | 0 | |
| 406-336 | Nocut Bank | Northern Tel. Coop | Landline | 0 |
| 406-337 | Northern Tel. Coop | Landline | 0 | |
| 406-338 | Browning | Siyeh Communications | Landline | 0 |
| 406-339 | Ethridge | Northern Tel. Coop | Landline | 0 |
| 406-340 | Lima | AT&T Mobility | Wireless | 0 |
| 406-341 | Manhattan | Onvoy (Sinch) | VoIP | 0 |
| 406-342 | Hysham | Range Tel Coop | Landline | 0 |
| 406-343 | Wyola | Project Tel | Landline | 0 |
| 406-344 | Havre | Verizon Wireless | Wireless | 0 |
| 406-345 | Glendive | Mid-Rivers Telephone Cooperative | Landline | 1 |
| 406-346 | Forsyth | Range Telephone Cooperative | Landline | 0 |
| 406-347 | Rosebud | Range Tel Coop | Landline | 0 |
| 406-348 | Huntley | Project Tel | Landline | 0 |
| 406-349 | Alta | Blackfoot Tel. Coop | Landline | 0 |
| 406-350 | Lewistown | AT&T Mobility | Wireless | 0 |
| 406-351 | Forsyth | Verizon Wireless | Wireless | 0 |
| 406-352 | Box Elder | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-353 | Harlem | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-354 | Rock Spg | Mid-Rivers Tel. Coop | Landline | 0 |
| 406-355 | Rudyard | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-356 | Forsyth | Lumen (CenturyLink) | Landline | 0 |
| 406-357 | Chinook | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-358 | Melstone | Mid-Rivers Tel. Coop | Landline | 0 |
| 406-359 | Glendive | Lumen (CenturyLink) | Landline | 0 |
| 406-360 | Hamilton | Verizon Wireless | Wireless | 0 |
| 406-361 | Hamilton | Verizon Wireless | Wireless | 0 |
| 406-362 | Lincoln | Lincoln Tel | Landline | 0 |
| 406-363 | Hamilton | Lumen (CenturyLink) | Landline | 0 |
| 406-364 | Hinsdale | Nemont Tel Coop | Landline | 0 |
| 406-365 | Glendive | Lumen (CenturyLink) | Landline | 0 |
| 406-366 | Lewistown | Verizon Wireless | Wireless | 0 |
| 406-367 | No Glasgow | Nemont Tel Coop | Landline | 0 |
| 406-368 | Canyon Crk | Lincoln Tel | Landline | 0 |
| 406-369 | Hamilton | AT&T Mobility | Wireless | 0 |
| 406-370 | Missoula | Verizon Wireless | Wireless | 0 |
| 406-371 | Billings | Verizon Business | VoIP | 0 |
| 406-372 | Kremlin | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-373 | Billings | Lumen (CenturyLink) | Landline | 0 |
| 406-374 | Moore | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-375 | Hamilton | Lumen (CenturyLink) | Landline | 0 |
| 406-376 | Gildford | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-377 | Glendive | Mid-Rivers Telephone Cooperative | Landline | 0 |
| 406-378 | Big Sandy | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-379 | Turner | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-380 | Lewistown | Verizon Wireless | Wireless | 0 |
| 406-381 | Hamilton | Verizon Wireless | Wireless | 0 |
| 406-382 | Superior | AT&T Mobility | Wireless | 0 |
| 406-383 | Dodson | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-384 | Billings | Allstream | Landline | 0 |
| 406-385 | Westby | Nemont Tel Coop | Landline | 0 |
| 406-386 | Triangle Tel. Coop. Assn | Landline | 0 | |
| 406-387 | Lumen (CenturyLink) | Landline | 0 | |
| 406-388 | Belgrade | Lumen (CenturyLink) | Landline | 0 |
| 406-389 | Helena | Lumen (CenturyLink) | Landline | 0 |
| 406-390 | Verizon Wireless | Wireless | 0 | |
| 406-391 | Cut Bank | AT&T Mobility | Wireless | 0 |
| 406-392 | No Wolf Pt | Nemont Tel Coop | Landline | 0 |
| 406-393 | Somers | Charter IP Enabled Services | Landline | 0 |
| 406-394 | Triangle Tel. Coop. Assn | Landline | 0 | |
| 406-395 | Triangle Tel. Coop. Assn | Landline | 0 | |
| 406-396 | Missoula | Verizon Wireless | Wireless | 0 |
| 406-397 | Hingham | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-398 | Triangle Tel. Coop. Assn | Landline | 0 | |
| 406-399 | Verizon Wireless | Wireless | 0 | |
| 406-400 | Havre | Triangle Communication System... | Landline | 0 |
| 406-401 | Great Falls | Csc Wireless | Wireless | 0 |
| 406-402 | Great Falls | T-Mobile | Wireless | 0 |
| 406-403 | Great Falls | Onvoy (Sinch) | VoIP | 0 |
| 406-404 | Bozeman | Charter IP Enabled Services | Landline | 0 |
| 406-405 | Libby | Onvoy (Sinch) | VoIP | 1 |
| 406-406 | Missoula | Livewire Telecom | Landline | 0 |
| 406-407 | Kalispell | Verizon Wireless | Wireless | 0 |
| 406-408 | Hays | Verizon Wireless | Wireless | 0 |
| 406-409 | Billings | Csc Wireless | Wireless | 0 |
| 406-410 | Helena | Verizon Wireless | Wireless | 0 |
| 406-412 | Billings | Onvoy (Sinch) | VoIP | 1 |
| 406-413 | Billings | Lumen (CenturyLink) | Landline | 0 |
| 406-414 | Bozeman | Lumen (CenturyLink) | Landline | 0 |
| 406-415 | Deer Lodge | Charter IP Enabled Services | Landline | 0 |
| 406-416 | Forsyth | Onvoy (Sinch) | VoIP | 0 |
| 406-417 | Helena | AT&T Mobility | Wireless | 0 |
| 406-418 | Cooke City | Onvoy (Sinch) | VoIP | 0 |
| 406-419 | Victor | Onvoy (Sinch) | VoIP | 0 |
| 406-420 | Bigfork | Charter IP Enabled Services | Landline | 0 |
| 406-421 | Somiles Cy | Range Tel Coop | Landline | 0 |
| 406-422 | Helena | Charter IP Enabled Services | Landline | 0 |
| 406-423 | Hobson | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-424 | Shelby | 3 Rivers Telephone Cooperative | Landline | 0 |
| 406-425 | Red Lodge | Verizon Wireless | Wireless | 0 |
| 406-426 | Red Lodge | Verizon Wireless | Wireless | 0 |
| 406-427 | So Broadus | Range Tel Coop | Landline | 0 |
| 406-428 | Grass Range | Mid-Rivers Tel. Coop | Landline | 0 |
| 406-429 | Winnett | Mid-Rivers Tel. Coop | Landline | 0 |
| 406-430 | Helena | Onvoy (Sinch) | VoIP | 0 |
| 406-431 | Helena | Verizon Wireless | Wireless | 0 |
| 406-432 | Devon | Northern Tel. Coop | Landline | 0 |
| 406-433 | Sidney | Mid-Rivers Telephone Cooperative | Landline | 0 |
| 406-434 | Shelby | Lumen (CenturyLink) | Landline | 0 |
| 406-435 | Billings | Tds Metrocom | Landline | 0 |
| 406-436 | Broadus | Range Tel Coop | Landline | 0 |
| 406-437 | Helena | Verizon Business | VoIP | 0 |
| 406-438 | Helena | Verizon Wireless | Wireless | 0 |
| 406-439 | Helena | AT&T Mobility | Wireless | 0 |
| 406-440 | Helena | 3 Rivers Telephone Cooperative | Landline | 0 |
| 406-441 | Helena | Lumen (CenturyLink) | Landline | 0 |
| 406-442 | Helena | Lumen (CenturyLink) | Landline | 0 |
| 406-443 | Helena | Lumen (CenturyLink) | Landline | 0 |
| 406-444 | Helena | Lumen (CenturyLink) | Landline | 0 |
| 406-445 | Red Lodge | Lumen (CenturyLink) | Landline | 0 |
| 406-446 | Red Lodge | Lumen (CenturyLink) | Landline | 0 |
| 406-447 | Helena | Lumen (CenturyLink) | Landline | 0 |
| 406-448 | No Poplar | Nemont Tel Coop | Landline | 0 |
| 406-449 | Helena | Lumen (CenturyLink) | Landline | 0 |
| 406-450 | Shelby | Verizon Wireless | Wireless | 0 |
| 406-451 | Bozeman | T-Mobile | Wireless | 0 |
| 406-452 | Great Falls | Lumen (CenturyLink) | Landline | 0 |
| 406-453 | Great Falls | Lumen (CenturyLink) | Landline | 0 |
| 406-454 | Great Falls | Lumen (CenturyLink) | Landline | 0 |
| 406-455 | Great Falls | Lumen (CenturyLink) | Landline | 0 |
| 406-456 | So Chester | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-457 | Helena | Lumen (CenturyLink) | Landline | 0 |
| 406-458 | Helena | Lumen (CenturyLink) | Landline | 0 |
| 406-459 | Helena | Verizon Wireless | Wireless | 0 |
| 406-460 | Shelby | AT&T Mobility | Wireless | 0 |
| 406-461 | Helena | Verizon Wireless | Wireless | 0 |
| 406-462 | Winifred | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-463 | Power | 3 Rivers Tel. Coop | Landline | 0 |
| 406-464 | Roy | Mid-Rivers Tel. Coop | Landline | 0 |
| 406-465 | Helena | Verizon Wireless | Wireless | 0 |
| 406-466 | Choteau | 3 Rivers Tel. Coop | Landline | 0 |
| 406-467 | Fairfield | 3 Rivers Tel. Coop | Landline | 0 |
| 406-468 | Cascade | Lumen (CenturyLink) | Landline | 0 |
| 406-469 | Pendroy | 3 Rivers Tel. Coop | Landline | 0 |
| 406-470 | Shelby | Verizon Wireless | Wireless | 0 |
| 406-471 | Kalispell | Verizon Wireless | Wireless | 0 |
| 406-472 | Dupuyer | 3 Rivers Tel. Coop | Landline | 0 |
| 406-473 | Judith Gap | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-474 | Flaxville | Nemont Tel Coop | Landline | 0 |
| 406-475 | Helena | Lumen (CenturyLink) | Landline | 0 |
| 406-476 | Dutton | Lumen (CenturyLink) | Landline | 0 |
| 406-477 | Lame Deer | Range Tel Coop | Landline | 0 |
| 406-478 | Sidney | Verizon Wireless | Wireless | 0 |
| 406-479 | Butte-Silver Bow | Verizon Wireless | Wireless | 0 |
| 406-480 | Sidney | Verizon Wireless | Wireless | 0 |
| 406-481 | Missoula | Verizon Wireless | Wireless | 0 |
| 406-482 | Sidney | Lumen (CenturyLink) | Landline | 0 |
| 406-483 | Dagmar | Nemont Tel Coop | Landline | 0 |
| 406-484 | Tri-County Tel. Assn | Landline | 0 | |
| 406-485 | Circle | Mid-Rivers Tel. Coop | Landline | 0 |
| 406-486 | Fallon | Mid-Rivers Tel. Coop | Landline | 0 |
| 406-487 | Scobey | Nemont Tel Coop | Landline | 0 |
| 406-488 | Sidney | Mid-Rivers Telephone Cooperative | Landline | 0 |
| 406-489 | Sidney | AT&T Mobility | Wireless | 0 |
| 406-490 | Butte-Silver Bow | Verizon Wireless | Wireless | 0 |
| 406-491 | Butte-Silver Bow | AT&T Mobility | Wireless | 0 |
| 406-492 | Avon | Blackfoot Tel. Coop | Landline | 0 |
| 406-493 | Missoula | Charter IP Enabled Services | Landline | 0 |
| 406-494 | Butte-Silver Bow | Lumen (CenturyLink) | Landline | 0 |
| 406-495 | Helena | Lumen (CenturyLink) | Landline | 0 |
| 406-496 | Butte-Silver Bow | Lumen (CenturyLink) | Landline | 0 |
| 406-497 | Butte-Silver Bow | Lumen (CenturyLink) | Landline | 0 |
| 406-498 | Butte-Silver Bow | Verizon Wireless | Wireless | 0 |
| 406-499 | AT&T Mobility | Wireless | 0 | |
| 406-500 | Billings | Fractel | VoIP | 0 |
| 406-501 | Whitehall | Onvoy (Sinch) | VoIP | 0 |
| 406-502 | Helena | Charter IP Enabled Services | Landline | 0 |
| 406-503 | Billings | Comcast (Xfinity) | VoIP | 0 |
| 406-504 | Fairfield | Lumen (Level 3) | VoIP | 0 |
| 406-505 | Conrad | AT&T Mobility | Wireless | 0 |
| 406-506 | Billings | Hd Carrier | Landline | 0 |
| 406-507 | Whitefish | Lumen (Level 3) | VoIP | 0 |
| 406-508 | Lumen (Level 3) | VoIP | 0 | |
| 406-509 | Missoula | Exiant Communications | Landline | 0 |
| 406-510 | Missoula | Onvoy (Sinch) | VoIP | 0 |
| 406-512 | Boulder | Lumen (Level 3) | VoIP | 0 |
| 406-513 | Helena | Charter IP Enabled Services | Landline | 0 |
| 406-514 | Culbertson | AT&T Mobility | Wireless | 0 |
| 406-515 | Superior | AT&T Mobility | Wireless | 0 |
| 406-516 | Laurel | Boost Subscriberco | Landline | 0 |
| 406-517 | Livingston | Verizon Wireless | Wireless | 0 |
| 406-518 | Onvoy (Sinch) | VoIP | 0 | |
| 406-519 | Missoula | IP Horizon | VoIP | 0 |
| 406-520 | Absarokee | Hd Carrier | Landline | 0 |
| 406-521 | Townsend | Verizon Wireless | Wireless | 0 |
| 406-522 | Bozeman | Lumen (CenturyLink) | Landline | 0 |
| 406-523 | Missoula | Lumen (CenturyLink) | Landline | 0 |
| 406-524 | Nemont Tel Coop | Landline | 0 | |
| 406-525 | So Wolf Pt | Mid-Rivers Tel. Coop | Landline | 0 |
| 406-526 | Fort Peck | Nemont Tel Coop | Landline | 0 |
| 406-527 | Saco | Nemont Tel Coop | Landline | 0 |
| 406-528 | Ronan | Ronan Tel | Landline | 0 |
| 406-529 | Missoula | Verizon Wireless | Wireless | 0 |
| 406-530 | Laurel | Lumen (Level 3) | VoIP | 0 |
| 406-531 | Missoula | Verizon Wireless | Wireless | 0 |
| 406-532 | Missoula | Blackfoot Communications | Landline | 0 |
| 406-533 | Butte-Silver Bow | Lumen (CenturyLink) | Landline | 0 |
| 406-534 | Billings | Charter IP Enabled Services | Landline | 1 |
| 406-535 | Lewistown | Mid-Rivers Telephone Cooperative | Landline | 0 |
| 406-536 | Bozeman | AT&T Mobility | Wireless | 0 |
| 406-537 | Melville | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-538 | Lewistown | Lumen (CenturyLink) | Landline | 0 |
| 406-539 | Bozeman | AT&T Mobility | Wireless | 0 |
| 406-540 | Missoula | Onvoy (Sinch) | VoIP | 0 |
| 406-541 | Missoula | Blackfoot Communications | Landline | 0 |
| 406-542 | Missoula | Lumen (CenturyLink) | Landline | 0 |
| 406-543 | Missoula | Lumen (CenturyLink) | Landline | 0 |
| 406-544 | Missoula | Verizon Wireless | Wireless | 0 |
| 406-545 | Billings | Lumen (Level 3) | VoIP | 0 |
| 406-546 | Missoula | Verizon Wireless | Wireless | 0 |
| 406-547 | White Sulphur Springs | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-548 | Bozeman | Lumen (CenturyLink) | Landline | 0 |
| 406-549 | Missoula | Lumen (CenturyLink) | Landline | 0 |
| 406-550 | Missoula | Nuso | Landline | 0 |
| 406-551 | Bozeman | Lumen (Level 3) | VoIP | 0 |
| 406-552 | Missoula | Lumen (Level 3) | VoIP | 0 |
| 406-553 | Divide | AT&T Mobility | Wireless | 0 |
| 406-554 | No Broadus | Range Tel Coop | Landline | 0 |
| 406-556 | Bozeman | Lumen (CenturyLink) | Landline | 0 |
| 406-557 | Jordan | Mid-Rivers Tel. Coop | Landline | 0 |
| 406-558 | Helena | Verizon Business | VoIP | 0 |
| 406-559 | Anaconda | Verizon Wireless | Wireless | 0 |
| 406-560 | Anaconda | Verizon Wireless | Wireless | 0 |
| 406-561 | Billings | T-Mobile | Wireless | 0 |
| 406-562 | Augusta | 3 Rivers Tel. Coop | Landline | 0 |
| 406-563 | Anaconda | Lumen (CenturyLink) | Landline | 0 |
| 406-564 | Great Falls | Lumen (Level 3) | VoIP | 0 |
| 406-565 | Butte-Silver Bow | Lumen (Level 3) | VoIP | 0 |
| 406-566 | Stanford | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-567 | Denton | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-568 | Ryegate | Mid-Rivers Tel. Coop | Landline | 0 |
| 406-569 | Wsquaw Gap | Reservation Tel. Coop | Landline | 0 |
| 406-570 | Bozeman | Verizon Wireless | Wireless | 0 |
| 406-571 | Finley Pt | Charter IP Enabled Services | Landline | 0 |
| 406-572 | Martinsdl | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-573 | Browning | Siyeh Communications | Landline | 0 |
| 406-574 | Silvertip | Lumen (CenturyLink) | Landline | 0 |
| 406-575 | No Ryegate | Mid-Rivers Tel. Coop | Landline | 0 |
| 406-576 | Conrad | AT&T Mobility | Wireless | 0 |
| 406-577 | Bozeman | Onvoy (Sinch) | VoIP | 0 |
| 406-578 | Wilsall | Lumen (CenturyLink) | Landline | 0 |
| 406-579 | Bozeman | Verizon Wireless | Wireless | 0 |
| 406-580 | Bozeman | AT&T Mobility | Wireless | 0 |
| 406-581 | Bozeman | Verizon Wireless | Wireless | 0 |
| 406-582 | Bozeman | Lumen (CenturyLink) | Landline | 0 |
| 406-583 | Mid-Rivers Tel. Coop | Landline | 0 | |
| 406-584 | Lindsay | Mid-Rivers Tel. Coop | Landline | 0 |
| 406-585 | Bozeman | Lumen (CenturyLink) | Landline | 0 |
| 406-586 | Bozeman | Lumen (CenturyLink) | Landline | 0 |
| 406-587 | Bozeman | Lumen (CenturyLink) | Landline | 0 |
| 406-588 | Carlyle | Mid-Rivers Tel. Coop | Landline | 0 |
| 406-589 | Bozeman | T-Mobile | Wireless | 0 |
| 406-590 | Great Falls | Verizon Wireless | Wireless | 0 |
| 406-591 | Billings | Verizon Wireless | Wireless | 0 |
| 406-592 | Busby | Range Tel Coop | Landline | 0 |
| 406-593 | Butte-Silver Bow | AT&T Mobility | Wireless | 0 |
| 406-594 | Helena | Verizon Wireless | Wireless | 0 |
| 406-595 | Bozeman | Verizon Wireless | Wireless | 0 |
| 406-596 | Dillon | AT&T Mobility | Wireless | 0 |
| 406-597 | Shelby | AT&T Mobility | Wireless | 0 |
| 406-598 | Billings | Verizon Wireless | Wireless | 0 |
| 406-599 | Bozeman | Verizon Wireless | Wireless | 0 |
| 406-600 | Bozeman | Verizon Wireless | Wireless | 0 |
| 406-601 | Billings | Blackfoot Communications | Landline | 0 |
| 406-602 | Bozeman | Blackfoot Communications | Landline | 0 |
| 406-603 | Helena | Blackfoot Communications | Landline | 0 |
| 406-604 | Great Falls | Blackfoot Communications | Landline | 0 |
| 406-605 | Butte-Silver Bow | Telnyx | VoIP | 0 |
| 406-606 | Billings | Tri Tel | Landline | 0 |
| 406-607 | Kalispell | Blackfoot Communications | Landline | 0 |
| 406-608 | Billings | IP Horizon | VoIP | 0 |
| 406-609 | Kalispell | AT&T Mobility | Wireless | 0 |
| 406-610 | Missoula | AT&T Mobility | Wireless | 0 |
| 406-612 | Swan Lake | Onvoy (Sinch) | VoIP | 0 |
| 406-613 | Bozeman | Lumen (CenturyLink) | Landline | 0 |
| 406-614 | Bigfork | Onvoy (Sinch) | VoIP | 0 |
| 406-615 | Thompson Falls | Western Montana Communitytel | Landline | 0 |
| 406-616 | Three Forks | Onvoy (Sinch) | VoIP | 0 |
| 406-617 | Billings | AT&T Mobility | Wireless | 0 |
| 406-618 | Missoula | Tds Metrocom | Landline | 0 |
| 406-620 | Billings | Sagebrush Cellular | Wireless | 0 |
| 406-621 | Fort Benton | Verizon Wireless | Wireless | 0 |
| 406-622 | Fort Benton | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-623 | Hardin | Commio | VoIP | 0 |
| 406-624 | Bozeman | Montana Opticom | Landline | 0 |
| 406-625 | Stevensville | AT&T | Landline | 0 |
| 406-626 | Lumen (CenturyLink) | Landline | 0 | |
| 406-627 | 3 Rivers Tel. Coop | Landline | 0 | |
| 406-628 | Laurel | Lumen (CenturyLink) | Landline | 0 |
| 406-629 | Hardin | Onvoy (Sinch) | VoIP | 0 |
| 406-630 | Sidney | Lumen (Level 3) | VoIP | 0 |
| 406-631 | Elmo | Onvoy (Sinch) | VoIP | 0 |
| 406-632 | Harlowton | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-633 | Laurel | Lumen (CenturyLink) | Landline | 0 |
| 406-634 | Helena | Onvoy (Sinch) | VoIP | 0 |
| 406-635 | Terry | Mid-Rivers Tel. Coop | Landline | 0 |
| 406-636 | Lavina | Mid-Rivers Tel. Coop | Landline | 0 |
| 406-637 | Terry | Lumen (CenturyLink) | Landline | 0 |
| 406-638 | Hardin | Project Tel | Landline | 0 |
| 406-639 | Lodge Grass | Project Tel | Landline | 0 |
| 406-640 | West Yellowstone | Verizon Wireless | Wireless | 0 |
| 406-641 | West Yellowstone | Verizon Wireless | Wireless | 0 |
| 406-642 | Victor | Lumen (CenturyLink) | Landline | 0 |
| 406-643 | No Parkman | Onvoy (Sinch) | VoIP | 0 |
| 406-644 | Charlo | Blackfoot Tel. Coop | Landline | 0 |
| 406-645 | Deer Lodge | Onvoy (Sinch) | VoIP | 0 |
| 406-646 | West Yellowstone | Lumen (CenturyLink) | Landline | 0 |
| 406-647 | Billings | Bandwidth | VoIP | 0 |
| 406-648 | Nemont Tel Coop | Landline | 0 | |
| 406-649 | St Regis | Blackfoot Tel. Coop | Landline | 0 |
| 406-650 | Wolf Point | Sagebrush Cellular | Wireless | 0 |
| 406-651 | Billings | Lumen (CenturyLink) | Landline | 0 |
| 406-652 | Billings | Lumen (CenturyLink) | Landline | 0 |
| 406-653 | Wolf Point | Nemont Tel Coop | Landline | 0 |
| 406-654 | Malta | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-655 | Billings | Lumen (CenturyLink) | Landline | 0 |
| 406-656 | Billings | Lumen (CenturyLink) | Landline | 0 |
| 406-657 | Billings | Lumen (CenturyLink) | Landline | 0 |
| 406-658 | Triangle Tel. Coop. Assn | Landline | 0 | |
| 406-659 | No Parkman | Lumen (CenturyLink) | Landline | 0 |
| 406-660 | Dillon | AT&T Mobility | Wireless | 0 |
| 406-661 | Billings | Verizon Wireless | Wireless | 0 |
| 406-662 | Bridger | Lumen (CenturyLink) | Landline | 0 |
| 406-663 | Rapelje | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-664 | Belfry | Project Tel | Landline | 0 |
| 406-665 | Hardin | Lumen (CenturyLink) | Landline | 0 |
| 406-666 | Forsyth | Project Tel | Landline | 0 |
| 406-667 | Broadview | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-668 | Fromberg | Lumen (CenturyLink) | Landline | 0 |
| 406-669 | Molt | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-670 | Billings | Verizon Wireless | Wireless | 0 |
| 406-671 | Billings | Verizon Wireless | Wireless | 0 |
| 406-672 | Billings | Verizon Wireless | Wireless | 0 |
| 406-673 | Hays | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-674 | Triangle Tel. Coop. Assn | Landline | 0 | |
| 406-675 | Pablo | Ronan Tel | Landline | 0 |
| 406-676 | Ronan | Ronan Tel | Landline | 0 |
| 406-677 | Blackfoot Tel. Coop | Landline | 0 | |
| 406-678 | Haugan | Blackfoot Tel. Coop | Landline | 0 |
| 406-679 | Hardin | Nuso | Landline | 0 |
| 406-680 | Malta | Sagebrush Cellular | Wireless | 0 |
| 406-681 | Grant | Southern Montana Tel | Landline | 0 |
| 406-682 | Ennis | 3 Rivers Tel. Coop | Landline | 0 |
| 406-683 | Dillon | Lumen (CenturyLink) | Landline | 0 |
| 406-684 | Twin Bridges | 3 Rivers Tel. Coop | Landline | 0 |
| 406-685 | Harrison | 3 Rivers Tel. Coop | Landline | 0 |
| 406-686 | Clyde Park | Lumen (CenturyLink) | Landline | 0 |
| 406-687 | W Glendive | Mid-Rivers Tel. Coop | Landline | 0 |
| 406-688 | Scobey | Sagebrush Cellular | Wireless | 0 |
| 406-689 | Wisdom | Southern Montana Tel | Landline | 0 |
| 406-690 | Billings | Verizon Wireless | Wireless | 0 |
| 406-691 | Anaconda | AT&T Mobility | Wireless | 0 |
| 406-692 | Yellow Bay | Onvoy (Sinch) | VoIP | 0 |
| 406-693 | Warm Spg | Lumen (CenturyLink) | Landline | 0 |
| 406-694 | Billings | Verizon Wireless | Wireless | 0 |
| 406-695 | Frazer | Nemont Tel Coop | Landline | 0 |
| 406-696 | Billings | Verizon Wireless | Wireless | 0 |
| 406-697 | Billings | Verizon Wireless | Wireless | 0 |
| 406-698 | Billings | Verizon Wireless | Wireless | 0 |
| 406-699 | Hardin | AT&T Mobility | Wireless | 0 |
| 406-702 | Billings | Charter IP Enabled Services | Landline | 0 |
| 406-703 | Columbus | Telnyx | VoIP | 0 |
| 406-707 | Lewistown | Terra Nova Telecom | Landline | 0 |
| 406-708 | Lewistown | Wide Voice | Landline | 0 |
| 406-709 | Lakeside | Charter IP Enabled Services | Landline | 0 |
| 406-717 | Billings | Vonage | VoIP | 0 |
| 406-718 | Darby | Twilio | VoIP | 0 |
| 406-719 | Fromberg | Twilio | VoIP | 0 |
| 406-720 | Colstrip | Verizon Wireless | Wireless | 0 |
| 406-721 | Missoula | Lumen (CenturyLink) | Landline | 0 |
| 406-722 | Alberton | Blackfoot Tel. Coop | Landline | 0 |
| 406-723 | Butte-Silver Bow | Lumen (CenturyLink) | Landline | 0 |
| 406-724 | Glentana | Nemont Tel Coop | Landline | 0 |
| 406-725 | Larslan | Nemont Tel Coop | Landline | 0 |
| 406-726 | Arlee | Blackfoot Tel. Coop | Landline | 0 |
| 406-727 | Great Falls | Lumen (CenturyLink) | Landline | 0 |
| 406-728 | Missoula | Lumen (CenturyLink) | Landline | 0 |
| 406-729 | Wilsall | Lumen (CenturyLink) | Landline | 0 |
| 406-730 | Whitefish | Charter IP Enabled Services | Landline | 0 |
| 406-731 | Great Falls | Wavenation | Landline | 0 |
| 406-732 | St Mary | Lumen (CenturyLink) | Landline | 0 |
| 406-733 | Highwood | 3 Rivers Tel. Coop | Landline | 0 |
| 406-734 | Carter | 3 Rivers Tel. Coop | Landline | 0 |
| 406-735 | Geyser | 3 Rivers Tel. Coop | Landline | 0 |
| 406-736 | Stockett | 3 Rivers Tel. Coop | Landline | 0 |
| 406-737 | Geraldine | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-738 | 3 Rivers Tel. Coop | Landline | 0 | |
| 406-739 | Loma | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-740 | Colstrip | Verizon Wireless | Wireless | 0 |
| 406-741 | Hot Springs | Hot Springs Tel | Landline | 0 |
| 406-742 | Fairview | Mid-Rivers Telephone Cooperative | Landline | 0 |
| 406-743 | Laurel | AT&T Mobility | Wireless | 0 |
| 406-744 | St. Ignatius | Western Montana Communitytel | Landline | 0 |
| 406-745 | St. Ignatius | Blackfoot Tel. Coop | Landline | 0 |
| 406-746 | Nashua | Nemont Tel Coop | Landline | 0 |
| 406-747 | Fairview | Lumen (CenturyLink) | Landline | 0 |
| 406-748 | Colstrip | Lumen (CenturyLink) | Landline | 0 |
| 406-749 | Colstrip | AT&T Mobility | Wireless | 0 |
| 406-750 | Great Falls | Verizon Wireless | Wireless | 0 |
| 406-751 | Kalispell | Lumen (CenturyLink) | Landline | 0 |
| 406-752 | Kalispell | Lumen (CenturyLink) | Landline | 0 |
| 406-753 | Brady | 3 Rivers Tel. Coop | Landline | 0 |
| 406-754 | Condon | Blackfoot Tel. Coop | Landline | 0 |
| 406-755 | Kalispell | Lumen (CenturyLink) | Landline | 0 |
| 406-756 | Kalispell | Lumen (CenturyLink) | Landline | 0 |
| 406-757 | Decker | Range Tel Coop | Landline | 0 |
| 406-758 | Kalispell | Lumen (CenturyLink) | Landline | 0 |
| 406-759 | Chester | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-760 | Great Falls | Vonage | VoIP | 0 |
| 406-761 | Great Falls | Lumen (CenturyLink) | Landline | 0 |
| 406-762 | Opheim | Nemont Tel Coop | Landline | 0 |
| 406-763 | Lumen (CenturyLink) | Landline | 0 | |
| 406-764 | No Frannie | Tri-County Tel. Assn | Landline | 0 |
| 406-765 | Plentywood | Nemont Tel Coop | Landline | 0 |
| 406-766 | Froid | Nemont Tel Coop | Landline | 0 |
| 406-767 | Ridge | Rt Communications | Landline | 0 |
| 406-768 | Poplar | Nemont Tel Coop | Landline | 0 |
| 406-769 | Bainville | Nemont Tel Coop | Landline | 0 |
| 406-770 | Great Falls | Comcast (Xfinity) | VoIP | 0 |
| 406-771 | Great Falls | Lumen (CenturyLink) | Landline | 0 |
| 406-772 | Plevna | Mid-Rivers Tel. Coop | Landline | 0 |
| 406-773 | Richey | Mid-Rivers Tel. Coop | Landline | 0 |
| 406-774 | Lambert | Mid-Rivers Tel. Coop | Landline | 0 |
| 406-775 | Ekalaka | Mid-Rivers Tel. Coop | Landline | 0 |
| 406-776 | Savage | Mid-Rivers Tel. Coop | Landline | 0 |
| 406-777 | Stevensville | Lumen (CenturyLink) | Landline | 0 |
| 406-778 | Baker | Mid-Rivers Tel. Coop | Landline | 0 |
| 406-779 | Nemont Tel Coop | Landline | 0 | |
| 406-780 | Columbus | Verizon Wireless | Wireless | 0 |
| 406-781 | Great Falls | Verizon Wireless | Wireless | 0 |
| 406-782 | Butte-Silver Bow | Lumen (CenturyLink) | Landline | 0 |
| 406-783 | Nemont Tel Coop | Landline | 0 | |
| 406-784 | Ashland | Range Tel Coop | Landline | 0 |
| 406-785 | No Nashua | Nemont Tel Coop | Landline | 0 |
| 406-786 | Brockton | Nemont Tel Coop | Landline | 0 |
| 406-787 | Culbertson | Nemont Tel Coop | Landline | 0 |
| 406-788 | Great Falls | Verizon Wireless | Wireless | 0 |
| 406-789 | Medicine Lake | Nemont Tel Coop | Landline | 0 |
| 406-790 | Culbertson | AT&T Mobility | Wireless | 0 |
| 406-791 | Great Falls | Lumen (CenturyLink) | Landline | 0 |
| 406-792 | Butte-Silver Bow | Onvoy (Sinch) | VoIP | 0 |
| 406-793 | Ovando | Blackfoot Tel. Coop | Landline | 0 |
| 406-794 | Billings | Onvoy (Sinch) | VoIP | 0 |
| 406-795 | Wibaux | Lumen (CenturyLink) | Landline | 0 |
| 406-796 | Wibaux | Mid-Rivers Telephone Cooperative | Landline | 0 |
| 406-797 | Anaconda | Lumen (CenturyLink) | Landline | 0 |
| 406-798 | Mid-Rivers Tel. Coop | Landline | 0 | |
| 406-799 | Great Falls | AT&T Mobility | Wireless | 0 |
| 406-800 | Bridger | Onvoy (Sinch) | VoIP | 0 |
| 406-802 | Hamilton | Verizon Wireless | Wireless | 0 |
| 406-804 | Gardiner | Onvoy (Sinch) | VoIP | 0 |
| 406-807 | Onvoy (Sinch) | VoIP | 0 | |
| 406-808 | Havre | Lumen (CenturyLink) | Landline | 0 |
| 406-812 | Laurel | Onvoy (Sinch) | VoIP | 0 |
| 406-813 | Belgrade | Verizon Business | VoIP | 0 |
| 406-815 | Red Lodge | AT&T | Landline | 0 |
| 406-818 | Red Lodge | AT&T Mobility | Wireless | 0 |
| 406-820 | Olney | Onvoy (Sinch) | VoIP | 0 |
| 406-821 | Darby | Lumen (CenturyLink) | Landline | 0 |
| 406-822 | Superior | Blackfoot Tel. Coop | Landline | 0 |
| 406-823 | Livingston | Lumen (CenturyLink) | Landline | 0 |
| 406-824 | St. Ignatius | AT&T Mobility | Wireless | 0 |
| 406-825 | Clinton | Blackfoot Tel. Coop | Landline | 0 |
| 406-826 | Plains | Blackfoot Tel. Coop | Landline | 0 |
| 406-827 | Thompson Falls | Blackfoot Tel. Coop | Landline | 0 |
| 406-828 | Alzada | Range Tel Coop | Landline | 0 |
| 406-829 | Missoula | Lumen (CenturyLink) | Landline | 0 |
| 406-830 | Missoula | Charter IP Enabled Services | Landline | 0 |
| 406-831 | Billings | Telnyx | VoIP | 0 |
| 406-832 | Wise River | Southern Montana Tel | Landline | 0 |
| 406-833 | Ronan | Verizon Wireless | Wireless | 0 |
| 406-834 | Jackson | Southern Montana Tel | Landline | 0 |
| 406-835 | Melrose | 3 Rivers Tel. Coop | Landline | 0 |
| 406-836 | Great Falls | Onvoy (Sinch) | VoIP | 0 |
| 406-837 | Bigfork | Lumen (CenturyLink) | Landline | 0 |
| 406-838 | Cooke City | Lumen (CenturyLink) | Landline | 0 |
| 406-839 | Billings | Charter IP Enabled Services | Landline | 0 |
| 406-840 | Silvertip | Onvoy (Sinch) | VoIP | 0 |
| 406-841 | Helena | Lumen (CenturyLink) | Landline | 0 |
| 406-842 | Sheridan | 3 Rivers Tel. Coop | Landline | 0 |
| 406-843 | Virginia City | 3 Rivers Tel. Coop | Landline | 0 |
| 406-844 | Lakeside | Lumen (CenturyLink) | Landline | 0 |
| 406-845 | Cut Bank | Charter IP Enabled Services | Landline | 0 |
| 406-846 | Deer Lodge | Lumen (CenturyLink) | Landline | 0 |
| 406-847 | Noxon | Blackfoot Tel. Coop | Landline | 0 |
| 406-848 | Gardiner | Lumen (CenturyLink) | Landline | 0 |
| 406-849 | Elmo | Lumen (CenturyLink) | Landline | 0 |
| 406-850 | Billings | AT&T Mobility | Wireless | 0 |
| 406-851 | Miles City | AT&T Mobility | Wireless | 0 |
| 406-852 | Miles City | Verizon Wireless | Wireless | 0 |
| 406-853 | Miles City | Verizon Wireless | Wireless | 0 |
| 406-854 | Marion | Lumen (CenturyLink) | Landline | 0 |
| 406-855 | Billings | AT&T Mobility | Wireless | 0 |
| 406-856 | Custer | Mid-Rivers Tel. Coop | Landline | 0 |
| 406-857 | Somers | Lumen (CenturyLink) | Landline | 0 |
| 406-858 | Kalispell | Boost Subscriberco | Landline | 0 |
| 406-859 | Philipsburg | Blackfoot Tel. Coop | Landline | 0 |
| 406-860 | Billings | AT&T Mobility | Wireless | 0 |
| 406-861 | Billings | AT&T Mobility | Wireless | 0 |
| 406-862 | Whitefish | Lumen (CenturyLink) | Landline | 0 |
| 406-863 | Whitefish | Lumen (CenturyLink) | Landline | 0 |
| 406-864 | S Alberton | Blackfoot Tel. Coop | Landline | 0 |
| 406-865 | Dillon | Verizon Wireless | Wireless | 0 |
| 406-866 | Great Falls | Lumen (CenturyLink) | Landline | 0 |
| 406-867 | Billings | Wavenation | Landline | 0 |
| 406-868 | Great Falls | Verizon Wireless | Wireless | 0 |
| 406-869 | Billings | Allstream | Landline | 0 |
| 406-870 | Great Falls | Bandwidth | VoIP | 0 |
| 406-871 | Kalispell | Verizon Wireless | Wireless | 0 |
| 406-872 | Polson | Western Montana Communitytel | Landline | 0 |
| 406-873 | Cut Bank | Lumen (CenturyLink) | Landline | 0 |
| 406-874 | Miles City | Mid-Rivers Telephone Cooperative | Landline | 0 |
| 406-875 | Project Tel | Landline | 0 | |
| 406-876 | Billings | Verizon Wireless | Wireless | 0 |
| 406-877 | Westby | Reservation Tel. Coop | Landline | 0 |
| 406-878 | Great Falls | Nuso | Landline | 0 |
| 406-879 | Havre | AT&T Mobility | Wireless | 0 |
| 406-880 | Missoula | Verizon Wireless | Wireless | 0 |
| 406-881 | Olney | Lumen (CenturyLink) | Landline | 0 |
| 406-882 | Interbel Tel. Coop | Landline | 0 | |
| 406-883 | Polson | Lumen (CenturyLink) | Landline | 0 |
| 406-884 | Polson | Lumen (CenturyLink) | Landline | 0 |
| 406-885 | Kalispell | Verizon Wireless | Wireless | 0 |
| 406-886 | Swan Lake | Lumen (CenturyLink) | Landline | 0 |
| 406-887 | Finley Pt | Lumen (CenturyLink) | Landline | 0 |
| 406-888 | W Glacier | Lumen (CenturyLink) | Landline | 0 |
| 406-889 | Interbel Tel. Coop | Landline | 0 | |
| 406-890 | Kalispell | Charter IP Enabled Services | Landline | 0 |
| 406-891 | Baker | AT&T Mobility | Wireless | 0 |
| 406-892 | Columbia Falls | Lumen (CenturyLink) | Landline | 0 |
| 406-893 | Peerless | Nemont Tel Coop | Landline | 0 |
| 406-894 | Billings | Commio | VoIP | 0 |
| 406-895 | Outlook | Nemont Tel Coop | Landline | 0 |
| 406-896 | Billings | Lumen (CenturyLink) | Landline | 0 |
| 406-897 | Columbia Falls | Charter IP Enabled Services | Landline | 0 |
| 406-898 | Bozeman | Charter IP Enabled Services | Landline | 0 |
| 406-899 | Great Falls | AT&T Mobility | Wireless | 0 |
| 406-900 | Ennis | Lumen (Level 3) | VoIP | 0 |
| 406-901 | Billings | Onvoy (Sinch) | VoIP | 0 |
| 406-902 | Sheridan | Lumen (Level 3) | VoIP | 0 |
| 406-905 | Joliet | Onvoy (Sinch) | VoIP | 0 |
| 406-909 | Columbia Falls | Verizon Wireless | Wireless | 0 |
| 406-913 | Roundup | Verizon Wireless | Wireless | 0 |
| 406-914 | Lambert | Verizon Wireless | Wireless | 0 |
| 406-915 | So Wolf Pt | Verizon Wireless | Wireless | 0 |
| 406-916 | Helena | T-Mobile | Wireless | 0 |
| 406-918 | Libby | AT&T Mobility | Wireless | 0 |
| 406-919 | Belgrade | Terra Nova Telecom | Landline | 0 |
| 406-920 | Bozeman | Verizon Wireless | Wireless | 0 |
| 406-922 | Bozeman | Allstream | Landline | 0 |
| 406-923 | Great Falls | Commio | VoIP | 0 |
| 406-924 | Belgrade | Lumen (Level 3) | VoIP | 0 |
| 406-925 | Dillon | Verizon Wireless | Wireless | 0 |
| 406-926 | Missoula | Charter IP Enabled Services | Landline | 0 |
| 406-927 | Billings | AT&T Mobility | Wireless | 0 |
| 406-928 | Grass Range | Verizon Wireless | Wireless | 0 |
| 406-929 | Onvoy (Sinch) | VoIP | 0 | |
| 406-930 | Big Timber | Verizon Wireless | Wireless | 0 |
| 406-931 | Big Timber | Verizon Wireless | Wireless | 0 |
| 406-932 | Big Timber | Triangle Tel. Coop. Assn | Landline | 0 |
| 406-933 | Helena | Lumen (CenturyLink) | Landline | 0 |
| 406-934 | Miles City | Wide Voice | Landline | 0 |
| 406-935 | Broadus | Verizon Wireless | Wireless | 0 |
| 406-936 | Clyde Park | Bandwidth | VoIP | 0 |
| 406-937 | Sunburst | Northern Tel. Coop | Landline | 0 |
| 406-938 | Alzada | Verizon Wireless | Wireless | 0 |
| 406-939 | W Glendive | Verizon Wireless | Wireless | 0 |
| 406-940 | Molt | AT&T Mobility | Wireless | 0 |
| 406-941 | W Glendive | Verizon Wireless | Wireless | 0 |
| 406-942 | Glasgow | Verizon Wireless | Wireless | 0 |
| 406-943 | Sidney | Lumen (Level 3) | VoIP | 0 |
| 406-944 | Miles City | Lumen (Level 3) | VoIP | 0 |
| 406-945 | Havre | AT&T Mobility | Wireless | 0 |
| 406-946 | Livingston | Lumen (Level 3) | VoIP | 0 |
| 406-947 | Mid-Rivers Tel. Coop | Landline | 0 | |
| 406-948 | Glendive | Lumen (Level 3) | VoIP | 0 |
| 406-949 | Townsend | AT&T Mobility | Wireless | 0 |
| 406-951 | Miles City | AT&T Mobility | Wireless | 0 |
| 406-952 | Great Falls | Onvoy (Sinch) | VoIP | 0 |
| 406-953 | Hardin | Sagebrush Cellular | Wireless | 1 |
| 406-954 | Roy | Verizon Wireless | Wireless | 0 |
| 406-955 | Kalispell | Verizon Wireless | Wireless | 0 |
| 406-956 | Baker | AT&T Mobility | Wireless | 0 |
| 406-957 | Terry | Verizon Wireless | Wireless | 1 |
| 406-960 | Dillon | Lumen (Level 3) | VoIP | 0 |
| 406-961 | Hamilton | Lumen (CenturyLink) | Landline | 0 |
| 406-962 | Joliet | Lumen (CenturyLink) | Landline | 0 |
| 406-963 | Nemont Tel Coop | Landline | 0 | |
| 406-964 | Great Falls | Lumen (CenturyLink) | Landline | 0 |
| 406-965 | Great Falls | Airus | Landline | 0 |
| 406-966 | Shelby | Lumen (Level 3) | VoIP | 0 |
| 406-967 | Worden | Project Tel | Landline | 0 |
| 406-968 | Lewistown | Hd Carrier | Landline | 0 |
| 406-969 | Billings | Skyetel | Landline | 0 |
| 406-970 | Billings | Lumen (CenturyLink) | Landline | 0 |
| 406-971 | Plevna | Verizon Wireless | Wireless | 0 |
| 406-972 | West River Cooperative Telephone | Landline | 0 | |
| 406-973 | Sidney | Verizon Wireless | Wireless | 0 |
| 406-974 | Circle | Verizon Wireless | Wireless | 0 |
| 406-975 | Ekalaka | Verizon Wireless | Wireless | 0 |
| 406-977 | Jordan | Verizon Wireless | Wireless | 0 |
| 406-978 | Baker | Verizon Wireless | Wireless | 0 |
| 406-979 | Richey | Verizon Wireless | Wireless | 0 |
| 406-980 | Townsend | Verizon Wireless | Wireless | 0 |
| 406-981 | Somiles Cy | Verizon Wireless | Wireless | 0 |
| 406-982 | Yellow Bay | Lumen (CenturyLink) | Landline | 0 |
| 406-983 | Ashland | Verizon Wireless | Wireless | 0 |
| 406-984 | Birney | Range Tel Coop | Landline | 0 |
| 406-987 | Glendive | Verizon Wireless | Wireless | 0 |
| 406-988 | Dillon | Lumen (Level 3) | VoIP | 0 |
| 406-989 | W Glendive | AT&T Mobility | Wireless | 0 |
| 406-990 | Lame Deer | AT&T Mobility | Wireless | 0 |
| 406-991 | Marion | Onvoy (Sinch) | VoIP | 0 |
| 406-992 | Helena | Onvoy (Sinch) | VoIP | 0 |
| 406-993 | Billings | 3 Rivers Tel. Coop | Landline | 0 |
| 406-994 | Bozeman | Lumen (CenturyLink) | Landline | 0 |
| 406-995 | Billings | 3 Rivers Tel. Coop | Landline | 0 |
| 406-996 | Helena | Charter IP Enabled Services | Landline | 0 |
| 406-997 | Fromberg | AT&T | Landline | 0 |
| 406-998 | Billings | Airus | Landline | 0 |
| 406-999 | Billings | Montana Opticom | Landline | 0 |
Area code 406 questions
Where is area code 406?
Area code 406 is in Montana. Its biggest rate centers are Billings, Missoula, Helena, Great Falls, Bozeman.
What time zone is area code 406?
Area code 406 is in the Mountain time zone.
Is a call from area code 406 a scam?
An area code alone can't tell you. Scammers use and spoof numbers in every area code. 14 406 numbers have been flagged on ShadyCall. Look up the full number to see its reports and FTC/FCC complaints.
What carriers use area code 406?
Of its 754 exchanges, the most were assigned to Lumen (CenturyLink), Verizon Wireless, AT&T Mobility. Numbers can be ported to any carrier, so the exchange shows the original carrier only.