406
Billings, Montana
Montana · Mountain (UTC-7) · — · 14 cities
Cities Served by Area Code 406 (14 cities)
Additional Details
Established
1947
Type
Original (1947)
Active Prefixes
767
Wireless Lines
28%
About Area Code 406
Area code 406 is one of the original 86 area codes established in 1947 when AT&T and the Bell System created the North American Numbering Plan. It has served the Billings area for over 75 years. The area is in the Mountain time zone. It covers 14 cities and communities including Anaconda, Billings, Bozeman, Butte, Great Falls and 9 more.
Phone Number Prefixes in Area Code 406
767 active NXX prefixes — 28% wireless, 72% landline. Each prefix (NXX) represents up to 10,000 phone numbers.
CenturyLink 157 (20%)Verizon Wireless 119 (16%)AT&T Mobility 74 (10%)Onvoy 43 (6%)Triangle Tel. Coop. Assn 39 (5%)
| Prefix | Carrier | Type | Rate Center |
|---|---|---|---|
| 406-200 | Teleport Communications America Mt - | Landline | Billings |
| 406-201 | AT&T Mobility | Wireless | Forsyth |
| 406-202 | AT&T Mobility | Wireless | Helena |
| 406-203 | Lumen/Level 3 | Landline | Missoula |
| 406-204 | Lumen/Level 3 | Landline | Helena |
| 406-205 | Lumen/Level 3 | Landline | Greatfalls |
| 406-206 | Lumen/Level 3 | Landline | Billings |
| 406-207 | AT&T Mobility | Wireless | Missoula |
| 406-208 | AT&T Mobility | Wireless | Billings |
| 406-209 | AT&T Mobility | Wireless | Bozeman |
| 406-210 | Verizon Wireless | Wireless | Seeleylake |
| 406-211 | Multiple Ocn Listing | Landline | Xxxxxxxxxx |
| 406-212 | AT&T Mobility | Wireless | Kalispell |
| 406-213 | Lumen/Level 3 | Landline | Colstrip |
| 406-214 | Verizon Wireless | Wireless | Missoula |
| 406-215 | Skye Telecom | Landline | Missoula |
| 406-216 | 3 Rivers Telephone Cooperative | Landline | Greatfalls |
| 406-217 | Verizon Wireless | Wireless | Greatfalls |
| 406-218 | T-Mobile | Wireless | Missoula |
| 406-219 | Bandwidth.com | Landline | Bozeman |
| 406-220 | AT&T Mobility | Wireless | Livingston |
| 406-221 | Onvoy | Landline | Butte |
| 406-222 | CenturyLink | Landline | Livingston |
| 406-223 | Verizon Wireless | Wireless | Livingston |
| 406-224 | Verizon Wireless | Wireless | Livingston |
| 406-225 | CenturyLink | Landline | Boulder |
| 406-226 | CenturyLink | Landline | Eglacierpk |
| 406-227 | CenturyLink | Landline | Helena |
| 406-228 | Nemont Tel Coop | Landline | Glasgow |
| 406-229 | AT&T Mobility | Wireless | Cut Bank |
| 406-230 | Verizon Wireless | Wireless | Glasgow |
| 406-231 | AT&T Mobility | Wireless | Greatfalls |
| 406-232 | CenturyLink | Landline | Miles City |
| 406-233 | CenturyLink | Landline | Miles City |
| 406-234 | Mid-Rivers Telephone Cooperative | Landline | Miles City |
| 406-235 | CenturyLink | Landline | Wolf Creek |
| 406-236 | 3 Rivers Tel. Coop | Landline | Neihart |
| 406-237 | CenturyLink | Landline | Billings |
| 406-238 | CenturyLink | Landline | Billings |
| 406-239 | AT&T Mobility | Wireless | Missoula |
| 406-240 | AT&T Mobility | Wireless | Missoula |
| 406-241 | AT&T Mobility | Wireless | Missoula |
| 406-242 | AT&T Mobility | Wireless | Thompsnfls |
| 406-243 | CenturyLink | Landline | Missoula |
| 406-244 | Blackfoot Tel. Coop | Landline | Potomac |
| 406-245 | CenturyLink | Landline | Billings |
| 406-246 | Blackfoot Tel. Coop | Landline | Dixon |
| 406-247 | CenturyLink | Landline | Billings |
| 406-248 | CenturyLink | Landline | Billings |
| 406-249 | Verizon Wireless | Wireless | Kalispell |
| 406-250 | Verizon Wireless | Wireless | Kalispell |
| 406-251 | CenturyLink | Landline | Missoula |
| 406-252 | CenturyLink | Landline | Billings |
| 406-253 | AT&T Mobility | Wireless | Kalispell |
| 406-254 | CenturyLink | Landline | Billings |
| 406-255 | CenturyLink | Landline | Billings |
| 406-256 | CenturyLink | Landline | Billings |
| 406-257 | CenturyLink | Landline | Kalispell |
| 406-258 | CenturyLink | Landline | Missoula |
| 406-259 | CenturyLink | Landline | Billings |
| 406-260 | AT&T Mobility | Wireless | Kalispell |
| 406-261 | AT&T Mobility | Wireless | Kalispell |
| 406-262 | CenturyLink | Landline | Havre |
| 406-263 | Sagebrush Cellular | Wireless | Glasgow |
| 406-264 | 3 Rivers Tel. Coop | Landline | Fort Shaw |
| 406-265 | CenturyLink | Landline | Havre |
| 406-266 | CenturyLink | Landline | Townsend |
| 406-267 | Southern Montana Tel. Co | Landline | Divide |
| 406-268 | CenturyLink | Landline | Greatfalls |
| 406-269 | AT&T Mobility | Wireless | St Regis |
| 406-270 | Verizon Wireless | Wireless | Kalispell |
| 406-271 | 3 Rivers Telephone Cooperative | Landline | Conrad |
| 406-272 | Onvoy | Landline | Billings |
| 406-273 | CenturyLink | Landline | Missoula |
| 406-274 | Teleport Communications America Mt - | Landline | Missoula |
| 406-275 | Ronan Tel. Co | Landline | Pablo |
| 406-276 | 3 Rivers Tel. Coop | Landline | Lima |
| 406-277 | 3 Rivers Tel. Coop | Landline | Belt |
| 406-278 | CenturyLink | Landline | Conrad |
| 406-279 | 3 Rivers Tel. Coop | Landline | Valier |
| 406-280 | AT&T Mobility | Wireless | St Regis |
| 406-281 | Teleport Communications America Mt - | Landline | Billings |
| 406-282 | CenturyLink | Landline | Manhattan |
| 406-283 | Ziply Fiber Montana | Landline | Libby |
| 406-284 | CenturyLink | Landline | Manhattan |
| 406-285 | CenturyLink | Landline | Threeforks |
| 406-286 | Nemont Tel Coop | Landline | Reserve |
| 406-287 | CenturyLink | Landline | Whitehall |
| 406-288 | Blackfoot Tel. Coop | Landline | Drummond |
| 406-289 | AT&T Mobility | Wireless | Conrad |
| 406-290 | Onvoy | Landline | Columbus |
| 406-291 | Verizon Wireless | Wireless | Libby |
| 406-292 | Triangle Tel. Coop. Assn | Landline | Joplin |
| 406-293 | Ziply Fiber Montana | Landline | Libby |
| 406-294 | Electric Lightwave | Landline | Billings |
| 406-295 | Ziply Fiber Montana | Landline | Troy |
| 406-296 | Ziply Fiber Montana | Landline | Eureka |
| 406-297 | Interbel Telephone Cooperative | Landline | Eurekarurl |
| 406-298 | Verizon Wireless | Wireless | Columbus |
| 406-299 | Lumen/Level 3 | Landline | Butte |
| 406-300 | Spectrum | Landline | Kalispell |
| 406-301 | Verizon Wireless | Wireless | Malta |
| 406-302 | Onvoy | Landline | Wolf Creek |
| 406-303 | Teleport Communications America Mt - | Landline | Missoula |
| 406-304 | T-Mobile | Wireless | Missoula |
| 406-305 | AT&T Mobility | Wireless | Whslphrspg |
| 406-306 | Onvoy | Landline | Manhattan |
| 406-307 | Spectrum | Landline | Canyon Crk |
| 406-308 | Verizon Wireless | Wireless | Cascade |
| 406-309 | Spectrum | Landline | Kalispell |
| 406-310 | Blackfoot Communications | Landline | Butte |
| 406-311 | Multiple Ocn Listing | Landline | Xxxxxxxxxx |
| 406-312 | Nuso | Landline | Bozeman |
| 406-313 | Onvoy | Landline | Boulder |
| 406-314 | AT&T Mobility | Wireless | Kalispell |
| 406-315 | Sagebrush Cellular | Wireless | Greatfalls |
| 406-316 | Onvoy | Landline | Boulder |
| 406-317 | Telnyx | Landline | Missoula |
| 406-318 | Onvoy | Landline | Billings |
| 406-319 | Spectrum | Landline | Polson |
| 406-320 | Verizon Wireless | Wireless | Roundup |
| 406-321 | AT&T Mobility | Wireless | Columbus |
| 406-322 | CenturyLink | Landline | Columbus |
| 406-323 | Mid-Rivers Tel. Coop | Landline | Roundup |
| 406-324 | CenturyLink | Landline | Helena |
| 406-325 | Nuso | Landline | Billings |
| 406-326 | Triangle Tel. Coop. Assn | Landline | Reedpoint |
| 406-327 | CenturyLink | Landline | Missoula |
| 406-328 | Project Tel. Co | Landline | Absarokee |
| 406-329 | CenturyLink | Landline | Missoula |
| 406-330 | Spectrum | Landline | Clinton |
| 406-331 | Verizon Wireless | Wireless | Roundup |
| 406-332 | Blackfoot Tel. Coop | Landline | Pablo |
| 406-333 | CenturyLink | Landline | Livingston |
| 406-334 | AT&T Mobility | Wireless | Libby |
| 406-335 | Northern Tel. Coop | Landline | Sweetgrass |
| 406-336 | Northern Tel. Coop | Landline | Nocut Bank |
| 406-337 | Northern Tel. Coop | Landline | Kevinolmnt |
| 406-338 | Siyeh Communications | Landline | Browning |
| 406-339 | Northern Tel. Coop | Landline | Ethridge |
| 406-340 | AT&T Mobility | Wireless | Lima |
| 406-341 | Onvoy | Landline | Manhattan |
| 406-342 | Range Tel Coop | Landline | Hysham |
| 406-343 | Project Tel. Co | Landline | Wyola |
| 406-344 | Verizon Wireless | Wireless | Havre |
| 406-345 | Mid-Rivers Telephone Cooperative | Landline | Glendive |
| 406-346 | Range Telephone Cooperative | Landline | Forsyth |
| 406-347 | Range Tel Coop | Landline | Rosebud |
| 406-348 | Project Tel. Co | Landline | Huntley |
| 406-349 | Blackfoot Tel. Coop | Landline | Alta |
| 406-350 | AT&T Mobility | Wireless | Lewistown |
| 406-351 | Verizon Wireless | Wireless | Forsyth |
| 406-352 | Triangle Tel. Coop. Assn | Landline | Box Elder |
| 406-353 | Triangle Tel. Coop. Assn | Landline | Harlem |
| 406-354 | Mid-Rivers Tel. Coop | Landline | Rock Spg |
| 406-355 | Triangle Tel. Coop. Assn | Landline | Rudyard |
| 406-356 | CenturyLink | Landline | Forsyth |
| 406-357 | Triangle Tel. Coop. Assn | Landline | Chinook |
| 406-358 | Mid-Rivers Tel. Coop | Landline | Melstone |
| 406-359 | CenturyLink | Landline | Glendive |
| 406-360 | Verizon Wireless | Wireless | Hamilton |
| 406-361 | Verizon Wireless | Wireless | Hamilton |
| 406-362 | Lincoln Tel. Co | Landline | Lincoln |
| 406-363 | CenturyLink | Landline | Hamilton |
| 406-364 | Nemont Tel Coop | Landline | Hinsdale |
| 406-365 | CenturyLink | Landline | Glendive |
| 406-366 | Verizon Wireless | Wireless | Lewistown |
| 406-367 | Nemont Tel Coop | Landline | No Glasgow |
| 406-368 | Lincoln Tel. Co | Landline | Canyon Crk |
| 406-369 | AT&T Mobility | Wireless | Hamilton |
| 406-370 | Verizon Wireless | Wireless | Missoula |
| 406-371 | MCI/Verizon | Wireless | Billings |
| 406-372 | Triangle Tel. Coop. Assn | Landline | Kremlin |
| 406-373 | CenturyLink | Landline | Billings |
| 406-374 | Triangle Tel. Coop. Assn | Landline | Moore |
| 406-375 | CenturyLink | Landline | Hamilton |
| 406-376 | Triangle Tel. Coop. Assn | Landline | Gildford |
| 406-377 | Mid-Rivers Telephone Cooperative | Landline | Glendive |
| 406-378 | Triangle Tel. Coop. Assn | Landline | Big Sandy |
| 406-379 | Triangle Tel. Coop. Assn | Landline | Turner |
| 406-380 | Verizon Wireless | Wireless | Lewistown |
| 406-381 | Verizon Wireless | Wireless | Hamilton |
| 406-382 | AT&T Mobility | Wireless | Superior |
| 406-383 | Triangle Tel. Coop. Assn | Landline | Dodson |
| 406-384 | Electric Lightwave | Landline | Billings |
| 406-385 | Nemont Tel Coop | Landline | Westby |
| 406-386 | Triangle Tel. Coop. Assn | Landline | Hoppilliad |
| 406-387 | CenturyLink | Landline | Hungryhors |
| 406-388 | CenturyLink | Landline | Belgrade |
| 406-389 | CenturyLink | Landline | Helena |
| 406-390 | Verizon Wireless | Wireless | Southhavre |
| 406-391 | AT&T Mobility | Wireless | Cut Bank |
| 406-392 | Nemont Tel Coop | Landline | No Wolf Pt |
| 406-393 | Spectrum | Landline | Somers |
| 406-394 | Triangle Tel. Coop. Assn | Landline | Northhavre |
| 406-395 | Triangle Tel. Coop. Assn | Landline | Southhavre |
| 406-396 | Verizon Wireless | Wireless | Missoula |
| 406-397 | Triangle Tel. Coop. Assn | Landline | Hingham |
| 406-398 | Triangle Tel. Coop. Assn | Landline | Northhavre |
| 406-399 | Verizon Wireless | Wireless | Southhavre |
| 406-400 | Triangle Communication System | Landline | Havre |
| 406-401 | Csc Wireless | Wireless | Greatfalls |
| 406-402 | T-Mobile | Wireless | Greatfalls |
| 406-403 | Onvoy | Landline | Greatfalls |
| 406-404 | Spectrum | Landline | Bozeman |
| 406-405 | Onvoy | Landline | Libby |
| 406-406 | Livewire Telecom | Landline | Missoula |
| 406-407 | Verizon Wireless | Wireless | Kalispell |
| 406-408 | Verizon Wireless | Wireless | Hays |
| 406-409 | Csc Wireless | Wireless | Billings |
| 406-410 | Verizon Wireless | Wireless | Helena |
| 406-411 | Multiple Ocn Listing | Landline | Xxxxxxxxxx |
| 406-412 | Onvoy | Landline | Billings |
| 406-413 | CenturyLink | Landline | Billings |
| 406-414 | CenturyLink | Landline | Bozeman |
| 406-415 | Spectrum | Landline | Deer Lodge |
| 406-416 | Onvoy | Landline | Forsyth |
| 406-417 | AT&T Mobility | Wireless | Helena |
| 406-418 | Onvoy | Landline | Cooke City |
| 406-419 | Onvoy | Landline | Victor |
| 406-420 | Spectrum | Landline | Bigfork |
| 406-421 | Range Tel Coop | Landline | Somiles Cy |
| 406-422 | Spectrum | Landline | Helena |
| 406-423 | Triangle Tel. Coop. Assn | Landline | Hobson |
| 406-424 | 3 Rivers Telephone Cooperative | Landline | Shelby |
| 406-425 | Verizon Wireless | Wireless | Red Lodge |
| 406-426 | Verizon Wireless | Wireless | Red Lodge |
| 406-427 | Range Tel Coop | Landline | So Broadus |
| 406-428 | Mid-Rivers Tel. Coop | Landline | Grassrange |
| 406-429 | Mid-Rivers Tel. Coop | Landline | Winnett |
| 406-430 | Onvoy | Landline | Helena |
| 406-431 | Verizon Wireless | Wireless | Helena |
| 406-432 | Northern Tel. Coop | Landline | Devon |
| 406-433 | Mid-Rivers Telephone Cooperative | Landline | Sidney |
| 406-434 | CenturyLink | Landline | Shelby |
| 406-435 | Tds Metrocom | Wireless | Billings |
| 406-436 | Range Tel Coop | Landline | Broadus |
| 406-437 | MCI/Verizon | Wireless | Helena |
| 406-438 | Verizon Wireless | Wireless | Helena |
| 406-439 | AT&T Mobility | Wireless | Helena |
| 406-440 | 3 Rivers Telephone Cooperative | Landline | Helena |
| 406-441 | CenturyLink | Landline | Helena |
| 406-442 | CenturyLink | Landline | Helena |
| 406-443 | CenturyLink | Landline | Helena |
| 406-444 | CenturyLink | Landline | Helena |
| 406-445 | CenturyLink | Landline | Red Lodge |
| 406-446 | CenturyLink | Landline | Red Lodge |
| 406-447 | CenturyLink | Landline | Helena |
| 406-448 | Nemont Tel Coop | Landline | No Poplar |
| 406-449 | CenturyLink | Landline | Helena |
| 406-450 | Verizon Wireless | Wireless | Shelby |
| 406-451 | T-Mobile | Wireless | Bozeman |
| 406-452 | CenturyLink | Landline | Greatfalls |
| 406-453 | CenturyLink | Landline | Greatfalls |
| 406-454 | CenturyLink | Landline | Greatfalls |
| 406-455 | Yorkstream Communications | Landline | Greatfalls |
| 406-456 | Triangle Tel. Coop. Assn | Landline | So Chester |
| 406-457 | CenturyLink | Landline | Helena |
| 406-458 | CenturyLink | Landline | Helena |
| 406-459 | Verizon Wireless | Wireless | Helena |
| 406-460 | AT&T Mobility | Wireless | Shelby |
| 406-461 | Verizon Wireless | Wireless | Helena |
| 406-462 | Triangle Tel. Coop. Assn | Landline | Winifred |
| 406-463 | 3 Rivers Tel. Coop | Landline | Power |
| 406-464 | Mid-Rivers Tel. Coop | Landline | Roy |
| 406-465 | Verizon Wireless | Wireless | Helena |
| 406-466 | 3 Rivers Tel. Coop | Landline | Choteau |
| 406-467 | 3 Rivers Tel. Coop | Landline | Fairfield |
| 406-468 | CenturyLink | Landline | Cascade |
| 406-469 | 3 Rivers Tel. Coop | Landline | Pendroy |
| 406-470 | Verizon Wireless | Wireless | Shelby |
| 406-471 | Verizon Wireless | Wireless | Kalispell |
| 406-472 | 3 Rivers Tel. Coop | Landline | Dupuyer |
| 406-473 | Triangle Tel. Coop. Assn | Landline | Judith Gap |
| 406-474 | Nemont Tel Coop | Landline | Flaxville |
| 406-475 | CenturyLink | Landline | Helena |
| 406-476 | CenturyLink | Landline | Dutton |
| 406-477 | Range Tel Coop | Landline | Lame Deer |
| 406-478 | Verizon Wireless | Wireless | Sidney |
| 406-479 | Verizon Wireless | Wireless | Butte |
| 406-480 | Verizon Wireless | Wireless | Sidney |
| 406-481 | Verizon Wireless | Wireless | Missoula |
| 406-482 | CenturyLink | Landline | Sidney |
| 406-483 | Nemont Tel Coop | Landline | Dagmar |
| 406-484 | Tri-County Tel. Assn | Landline | Crookedcrk |
| 406-485 | Mid-Rivers Tel. Coop | Landline | Circle |
| 406-486 | Mid-Rivers Tel. Coop | Landline | Fallon |
| 406-487 | Nemont Tel Coop | Landline | Scobey |
| 406-488 | Mid-Rivers Telephone Cooperative | Landline | Sidney |
| 406-489 | AT&T Mobility | Wireless | Sidney |
| 406-490 | Verizon Wireless | Wireless | Butte |
| 406-491 | AT&T Mobility | Wireless | Butte |
| 406-492 | Blackfoot Tel. Coop | Landline | Avon |
| 406-493 | Spectrum | Landline | Missoula |
| 406-494 | CenturyLink | Landline | Butte |
| 406-495 | CenturyLink | Landline | Helena |
| 406-496 | CenturyLink | Landline | Butte |
| 406-497 | CenturyLink | Landline | Butte |
| 406-498 | Verizon Wireless | Wireless | Butte |
| 406-499 | AT&T Mobility | Wireless | Seeleylake |
| 406-500 | Fractel | Landline | Billings |
| 406-501 | Onvoy | Landline | Whitehall |
| 406-502 | Spectrum | Landline | Helena |
| 406-503 | Comcast | Landline | Billings |
| 406-504 | Lumen/Level 3 | Landline | Fairfield |
| 406-505 | AT&T Mobility | Wireless | Conrad |
| 406-506 | Hd Carrier | Landline | Billings |
| 406-507 | Lumen/Level 3 | Landline | Whitefish |
| 406-508 | Lumen/Level 3 | Landline | Frenchtown |
| 406-510 | Onvoy | Landline | Missoula |
| 406-511 | Multiple Ocn Listing | Landline | Xxxxxxxxxx |
| 406-512 | Lumen/Level 3 | Landline | Boulder |
| 406-513 | Spectrum | Landline | Helena |
| 406-514 | AT&T Mobility | Wireless | Culbertson |
| 406-515 | AT&T Mobility | Wireless | Superior |
| 406-516 | Boost Subscriberco | Wireless | Laurel |
| 406-517 | Verizon Wireless | Wireless | Livingston |
| 406-518 | Onvoy | Landline | Galatngtwy |
| 406-519 | Ip Horizon | Landline | Missoula |
| 406-520 | Hd Carrier | Landline | Absarokee |
| 406-521 | Verizon Wireless | Wireless | Townsend |
| 406-522 | CenturyLink | Landline | Bozeman |
| 406-523 | CenturyLink | Landline | Missoula |
| 406-524 | Nemont Tel Coop | Landline | Vlinstrlpk |
| 406-525 | Mid-Rivers Tel. Coop | Landline | So Wolf Pt |
| 406-526 | Nemont Tel Coop | Landline | Fort Peck |
| 406-527 | Nemont Tel Coop | Landline | Saco |
| 406-528 | Ronan Tel. Co | Landline | Ronan |
| 406-529 | Verizon Wireless | Wireless | Missoula |
| 406-530 | Lumen/Level 3 | Landline | Laurel |
| 406-531 | Verizon Wireless | Wireless | Missoula |
| 406-532 | Blackfoot Communications | Landline | Missoula |
| 406-533 | CenturyLink | Landline | Butte |
| 406-534 | Spectrum | Landline | Billings |
| 406-535 | Mid-Rivers Telephone Cooperative | Landline | Lewistown |
| 406-536 | AT&T Mobility | Wireless | Bozeman |
| 406-537 | Triangle Tel. Coop. Assn | Landline | Melville |
| 406-538 | CenturyLink | Landline | Lewistown |
| 406-539 | AT&T Mobility | Wireless | Bozeman |
| 406-540 | Onvoy | Landline | Missoula |
| 406-541 | Blackfoot Communications | Landline | Missoula |
| 406-542 | CenturyLink | Landline | Missoula |
| 406-543 | CenturyLink | Landline | Missoula |
| 406-544 | Verizon Wireless | Wireless | Missoula |
| 406-545 | Lumen/Level 3 | Landline | Billings |
| 406-546 | Verizon Wireless | Wireless | Missoula |
| 406-547 | Triangle Tel. Coop. Assn | Landline | Whslphrspg |
| 406-548 | CenturyLink | Landline | Bozeman |
| 406-549 | CenturyLink | Landline | Missoula |
| 406-550 | Nuso | Landline | Missoula |
| 406-551 | Lumen/Level 3 | Landline | Bozeman |
| 406-552 | Lumen/Level 3 | Landline | Missoula |
| 406-553 | AT&T Mobility | Wireless | Divide |
| 406-554 | Range Tel Coop | Landline | No Broadus |
| 406-555 | Multiple Ocn Listing | Landline | Dir Asst |
| 406-556 | CenturyLink | Landline | Bozeman |
| 406-557 | Mid-Rivers Tel. Coop | Landline | Jordan |
| 406-558 | MCI/Verizon | Wireless | Helena |
| 406-559 | Verizon Wireless | Wireless | Anaconda |
| 406-560 | Verizon Wireless | Wireless | Anaconda |
| 406-561 | T-Mobile | Wireless | Billings |
| 406-562 | 3 Rivers Tel. Coop | Landline | Augusta |
| 406-563 | CenturyLink | Landline | Anaconda |
| 406-564 | Lumen/Level 3 | Landline | Greatfalls |
| 406-565 | Lumen/Level 3 | Landline | Butte |
| 406-566 | Triangle Tel. Coop. Assn | Landline | Stanford |
| 406-567 | Triangle Tel. Coop. Assn | Landline | Denton |
| 406-568 | Mid-Rivers Tel. Coop | Landline | Ryegate |
| 406-569 | Reservation Tel. Coop | Landline | Wsquaw Gap |
| 406-570 | Verizon Wireless | Wireless | Bozeman |
| 406-571 | Spectrum | Landline | Finley Pt |
| 406-572 | Triangle Tel. Coop. Assn | Landline | Martinsdl |
| 406-573 | Siyeh Communications | Landline | Browning |
| 406-574 | CenturyLink | Landline | Silvertip |
| 406-575 | Mid-Rivers Tel. Coop | Landline | No Ryegate |
| 406-576 | AT&T Mobility | Wireless | Conrad |
| 406-577 | Onvoy | Landline | Bozeman |
| 406-578 | CenturyLink | Landline | Wilsall |
| 406-579 | Verizon Wireless | Wireless | Bozeman |
| 406-580 | AT&T Mobility | Wireless | Bozeman |
| 406-581 | Verizon Wireless | Wireless | Bozeman |
| 406-582 | CenturyLink | Landline | Bozeman |
| 406-583 | Mid-Rivers Tel. Coop | Landline | Bloomfield |
| 406-584 | Mid-Rivers Tel. Coop | Landline | Lindsay |
| 406-585 | CenturyLink | Landline | Bozeman |
| 406-586 | CenturyLink | Landline | Bozeman |
| 406-587 | CenturyLink | Landline | Bozeman |
| 406-588 | Mid-Rivers Tel. Coop | Landline | Carlyle |
| 406-589 | T-Mobile | Wireless | Bozeman |
| 406-590 | Verizon Wireless | Wireless | Greatfalls |
| 406-591 | Verizon Wireless | Wireless | Billings |
| 406-592 | Range Tel Coop | Landline | Busby |
| 406-593 | AT&T Mobility | Wireless | Butte |
| 406-594 | Verizon Wireless | Wireless | Helena |
| 406-595 | Verizon Wireless | Wireless | Bozeman |
| 406-596 | AT&T Mobility | Wireless | Dillon |
| 406-597 | AT&T Mobility | Wireless | Shelby |
| 406-598 | Verizon Wireless | Wireless | Billings |
| 406-599 | Verizon Wireless | Wireless | Bozeman |
| 406-600 | Verizon Wireless | Wireless | Bozeman |
| 406-601 | Blackfoot Communications | Landline | Billings |
| 406-602 | Blackfoot Communications | Landline | Bozeman |
| 406-603 | Blackfoot Communications | Landline | Helena |
| 406-604 | Blackfoot Communications | Landline | Greatfalls |
| 406-605 | Telnyx | Landline | Butte |
| 406-606 | Tri Tel | Landline | Billings |
| 406-607 | Blackfoot Communications | Landline | Kalispell |
| 406-608 | Ip Horizon | Landline | Billings |
| 406-609 | AT&T Mobility | Wireless | Kalispell |
| 406-610 | AT&T Mobility | Wireless | Missoula |
| 406-611 | Multiple Ocn Listing | Landline | Xxxxxxxxxx |
| 406-612 | Onvoy | Landline | Swan Lake |
| 406-613 | CenturyLink | Landline | Bozeman |
| 406-614 | Onvoy | Landline | Bigfork |
| 406-615 | Western Montana Communitytel | Landline | Thompsnfls |
| 406-616 | Onvoy | Landline | Threeforks |
| 406-617 | AT&T Mobility | Wireless | Billings |
| 406-618 | Tds Metrocom | Wireless | Missoula |
| 406-620 | Sagebrush Cellular | Wireless | Billings |
| 406-621 | Verizon Wireless | Wireless | Fortbenton |
| 406-622 | Triangle Tel. Coop. Assn | Landline | Fortbenton |
| 406-623 | Commio | Landline | Hardin |
| 406-624 | Montana Opticom | Landline | Bozeman |
| 406-625 | AT&T | Landline | Stevensvl |
| 406-626 | CenturyLink | Landline | Frenchtown |
| 406-627 | 3 Rivers Tel. Coop | Landline | Eastconrad |
| 406-628 | CenturyLink | Landline | Laurel |
| 406-629 | Onvoy | Landline | Hardin |
| 406-630 | Lumen/Level 3 | Landline | Sidney |
| 406-631 | Onvoy | Landline | Elmo |
| 406-632 | Triangle Tel. Coop. Assn | Landline | Harlowton |
| 406-633 | CenturyLink | Landline | Laurel |
| 406-634 | Onvoy | Landline | Helena |
| 406-635 | Mid-Rivers Tel. Coop | Landline | Terry |
| 406-636 | Mid-Rivers Tel. Coop | Landline | Lavina |
| 406-637 | CenturyLink | Landline | Terry |
| 406-638 | Project Tel. Co | Landline | Hardin |
| 406-639 | Project Tel. Co | Landline | Lodgegrass |
| 406-640 | Verizon Wireless | Wireless | Wyellowstn |
| 406-641 | Verizon Wireless | Wireless | Wyellowstn |
| 406-642 | CenturyLink | Landline | Victor |
| 406-643 | Onvoy | Landline | No Parkman |
| 406-644 | Blackfoot Tel. Coop | Landline | Charlo |
| 406-645 | Onvoy | Landline | Deer Lodge |
| 406-646 | CenturyLink | Landline | Wyellowstn |
| 406-647 | Bandwidth.com | Landline | Billings |
| 406-648 | Nemont Tel Coop | Landline | Nohinsdale |
| 406-649 | Blackfoot Tel. Coop | Landline | St Regis |
| 406-650 | Sagebrush Cellular | Wireless | Wolf Point |
| 406-651 | CenturyLink | Landline | Billings |
| 406-652 | CenturyLink | Landline | Billings |
| 406-653 | Nemont Tel Coop | Landline | Wolf Point |
| 406-654 | Triangle Tel. Coop. Assn | Landline | Malta |
| 406-655 | CenturyLink | Landline | Billings |
| 406-656 | CenturyLink | Landline | Billings |
| 406-657 | CenturyLink | Landline | Billings |
| 406-658 | Triangle Tel. Coop. Assn | Landline | Southmalta |
| 406-659 | CenturyLink | Landline | No Parkman |
| 406-660 | AT&T Mobility | Wireless | Dillon |
| 406-661 | Verizon Wireless | Wireless | Billings |
| 406-662 | CenturyLink | Landline | Bridger |
| 406-663 | Triangle Tel. Coop. Assn | Landline | Rapelje |
| 406-664 | Project Tel. Co | Landline | Belfry |
| 406-665 | CenturyLink | Landline | Hardin |
| 406-666 | Project Tel. Co | Landline | Fort Smith |
| 406-667 | Triangle Tel. Coop. Assn | Landline | Broadview |
| 406-668 | CenturyLink | Landline | Fromberg |
| 406-669 | Triangle Tel. Coop. Assn | Landline | Molt |
| 406-670 | Verizon Wireless | Wireless | Billings |
| 406-671 | Verizon Wireless | Wireless | Billings |
| 406-672 | Verizon Wireless | Wireless | Billings |
| 406-673 | Triangle Tel. Coop. Assn | Landline | Hays |
| 406-674 | Triangle Tel. Coop. Assn | Landline | Whitewater |
| 406-675 | Ronan Tel. Co | Landline | Pablo |
| 406-676 | Ronan Tel. Co | Landline | Ronan |
| 406-677 | Blackfoot Tel. Coop | Landline | Seeleylake |
| 406-678 | Blackfoot Tel. Coop | Landline | Haugan |
| 406-679 | Nuso | Landline | Hardin |
| 406-680 | Sagebrush Cellular | Wireless | Malta |
| 406-681 | Southern Montana Tel. Co | Landline | Grant |
| 406-682 | 3 Rivers Tel. Coop | Landline | Ennis |
| 406-683 | CenturyLink | Landline | Dillon |
| 406-684 | 3 Rivers Tel. Coop | Landline | Twinbridgs |
| 406-685 | 3 Rivers Tel. Coop | Landline | Harrison |
| 406-686 | CenturyLink | Landline | Clyde Park |
| 406-687 | Mid-Rivers Tel. Coop | Landline | W Glendive |
| 406-688 | Sagebrush Cellular | Wireless | Scobey |
| 406-689 | Southern Montana Tel. Co | Landline | Wisdom |
| 406-690 | Verizon Wireless | Wireless | Billings |
| 406-691 | AT&T Mobility | Wireless | Anaconda |
| 406-692 | Onvoy | Landline | Yellow Bay |
| 406-693 | CenturyLink | Landline | Warm Spg |
| 406-694 | Verizon Wireless | Wireless | Billings |
| 406-695 | Nemont Tel Coop | Landline | Frazer |
| 406-696 | Verizon Wireless | Wireless | Billings |
| 406-697 | Verizon Wireless | Wireless | Billings |
| 406-698 | Verizon Wireless | Wireless | Billings |
| 406-699 | AT&T Mobility | Wireless | Hardin |
| 406-700 | Landline | ||
| 406-702 | Spectrum | Landline | Billings |
| 406-703 | Telnyx | Landline | Columbus |
| 406-707 | Terra Nova Telecom | Landline | Lewistown |
| 406-708 | Wide Voice | Landline | Lewistown |
| 406-709 | Spectrum | Landline | Lakeside |
| 406-711 | Multiple Ocn Listing | Landline | Xxxxxxxxxx |
| 406-717 | Vonage | Landline | Billings |
| 406-718 | Twilio | Landline | Darby |
| 406-719 | Twilio | Landline | Fromberg |
| 406-720 | Verizon Wireless | Wireless | Colstrip |
| 406-721 | CenturyLink | Landline | Missoula |
| 406-722 | Blackfoot Tel. Coop | Landline | Alberton |
| 406-723 | CenturyLink | Landline | Butte |
| 406-724 | Nemont Tel Coop | Landline | Glentana |
| 406-725 | Nemont Tel Coop | Landline | Larslan |
| 406-726 | Blackfoot Tel. Coop | Landline | Arlee |
| 406-727 | CenturyLink | Landline | Greatfalls |
| 406-728 | CenturyLink | Landline | Missoula |
| 406-729 | CenturyLink | Landline | Wilsall |
| 406-730 | Spectrum | Landline | Whitefish |
| 406-731 | Wavenation | Landline | Greatfalls |
| 406-732 | CenturyLink | Landline | St Mary |
| 406-733 | 3 Rivers Tel. Coop | Landline | Highwood |
| 406-734 | 3 Rivers Tel. Coop | Landline | Carter |
| 406-735 | 3 Rivers Tel. Coop | Landline | Geyser |
| 406-736 | 3 Rivers Tel. Coop | Landline | Stockett |
| 406-737 | Triangle Tel. Coop. Assn | Landline | Geraldine |
| 406-738 | 3 Rivers Tel. Coop | Landline | Raynesford |
| 406-739 | Triangle Tel. Coop. Assn | Landline | Loma |
| 406-740 | Verizon Wireless | Wireless | Colstrip |
| 406-741 | Hot Springs Tel. Co | Landline | Hotsprings |
| 406-742 | Mid-Rivers Telephone Cooperative | Landline | Fairview |
| 406-743 | AT&T Mobility | Wireless | Laurel |
| 406-744 | Western Montana Communitytel | Landline | Stignatius |
| 406-745 | Blackfoot Tel. Coop | Landline | Stignatius |
| 406-746 | Nemont Tel Coop | Landline | Nashua |
| 406-747 | CenturyLink | Landline | Fairview |
| 406-748 | CenturyLink | Landline | Colstrip |
| 406-749 | AT&T Mobility | Wireless | Colstrip |
| 406-750 | Verizon Wireless | Wireless | Greatfalls |
| 406-751 | CenturyLink | Landline | Kalispell |
| 406-752 | CenturyLink | Landline | Kalispell |
| 406-753 | 3 Rivers Tel. Coop | Landline | Brady |
| 406-754 | Blackfoot Tel. Coop | Landline | Condon |
| 406-755 | CenturyLink | Landline | Kalispell |
| 406-756 | CenturyLink | Landline | Kalispell |
| 406-757 | Range Tel Coop | Landline | Decker |
| 406-758 | CenturyLink | Landline | Kalispell |
| 406-759 | Triangle Tel. Coop. Assn | Landline | Chester |
| 406-760 | Vonage | Landline | Greatfalls |
| 406-761 | CenturyLink | Landline | Greatfalls |
| 406-762 | Nemont Tel Coop | Landline | Opheim |
| 406-763 | CenturyLink | Landline | Galatngtwy |
| 406-764 | Tri-County Tel. Assn | Landline | No Frannie |
| 406-765 | Nemont Tel Coop | Landline | Plentywood |
| 406-766 | Nemont Tel Coop | Landline | Froid |
| 406-767 | Rt Communications | Landline | Ridge |
| 406-768 | Nemont Tel Coop | Landline | Poplar |
| 406-769 | Nemont Tel Coop | Landline | Bainville |
| 406-770 | Comcast | Landline | Greatfalls |
| 406-771 | CenturyLink | Landline | Greatfalls |
| 406-772 | Mid-Rivers Tel. Coop | Landline | Plevna |
| 406-773 | Mid-Rivers Tel. Coop | Landline | Richey |
| 406-774 | Mid-Rivers Tel. Coop | Landline | Lambert |
| 406-775 | Mid-Rivers Tel. Coop | Landline | Ekalaka |
| 406-776 | Mid-Rivers Tel. Coop | Landline | Savage |
| 406-777 | CenturyLink | Landline | Stevensvl |
| 406-778 | Mid-Rivers Tel. Coop | Landline | Baker |
| 406-779 | Nemont Tel Coop | Landline | Flaxvlrurl |
| 406-780 | Verizon Wireless | Wireless | Columbus |
| 406-781 | Verizon Wireless | Wireless | Greatfalls |
| 406-782 | CenturyLink | Landline | Butte |
| 406-783 | Nemont Tel Coop | Landline | Scobeyrurl |
| 406-784 | Range Tel Coop | Landline | Ashland |
| 406-785 | Nemont Tel Coop | Landline | No Nashua |
| 406-786 | Nemont Tel Coop | Landline | Brockton |
| 406-787 | Nemont Tel Coop | Landline | Culbertson |
| 406-788 | Verizon Wireless | Wireless | Greatfalls |
| 406-789 | Nemont Tel Coop | Landline | Medicinelk |
| 406-790 | AT&T Mobility | Wireless | Culbertson |
| 406-791 | CenturyLink | Landline | Greatfalls |
| 406-792 | Onvoy | Landline | Butte |
| 406-793 | Blackfoot Tel. Coop | Landline | Ovando |
| 406-794 | Onvoy | Landline | Billings |
| 406-795 | CenturyLink | Landline | Wibaux |
| 406-796 | Mid-Rivers Telephone Cooperative | Landline | Wibaux |
| 406-797 | CenturyLink | Landline | Anaconda |
| 406-798 | Mid-Rivers Tel. Coop | Landline | Westsidney |
| 406-799 | AT&T Mobility | Wireless | Greatfalls |
| 406-800 | Onvoy | Landline | Bridger |
| 406-802 | Verizon Wireless | Wireless | Hamilton |
| 406-804 | Onvoy | Landline | Gardiner |
| 406-807 | Onvoy | Landline | Eglacierpk |
| 406-808 | CenturyLink | Landline | Havre |
| 406-811 | Multiple Ocn Listing | Landline | Xxxxxxxxxx |
| 406-812 | Onvoy | Landline | Laurel |
| 406-813 | MCI/Verizon | Wireless | Belgrade |
| 406-815 | AT&T | Landline | Red Lodge |
| 406-818 | AT&T Mobility | Wireless | Red Lodge |
| 406-820 | Onvoy | Landline | Olney |
| 406-821 | CenturyLink | Landline | Darby |
| 406-822 | Blackfoot Tel. Coop | Landline | Superior |
| 406-823 | CenturyLink | Landline | Livingston |
| 406-824 | AT&T Mobility | Wireless | Stignatius |
| 406-825 | Blackfoot Tel. Coop | Landline | Clinton |
| 406-826 | Blackfoot Tel. Coop | Landline | Plains |
| 406-827 | Blackfoot Tel. Coop | Landline | Thompsnfls |
| 406-828 | Range Tel Coop | Landline | Alzada |
| 406-829 | CenturyLink | Landline | Missoula |
| 406-830 | Spectrum | Landline | Missoula |
| 406-831 | Telnyx | Landline | Billings |
| 406-832 | Southern Montana Tel. Co | Landline | Wise River |
| 406-833 | Verizon Wireless | Wireless | Ronan |
| 406-834 | Southern Montana Tel. Co | Landline | Jackson |
| 406-835 | 3 Rivers Tel. Coop | Landline | Melrose |
| 406-836 | Onvoy | Landline | Greatfalls |
| 406-837 | CenturyLink | Landline | Bigfork |
| 406-838 | CenturyLink | Landline | Cooke City |
| 406-839 | Spectrum | Landline | Billings |
| 406-840 | Onvoy | Landline | Silvertip |
| 406-841 | CenturyLink | Landline | Helena |
| 406-842 | 3 Rivers Tel. Coop | Landline | Sheridan |
| 406-843 | 3 Rivers Tel. Coop | Landline | Virginiacy |
| 406-844 | CenturyLink | Landline | Lakeside |
| 406-845 | Spectrum | Landline | Cut Bank |
| 406-846 | CenturyLink | Landline | Deer Lodge |
| 406-847 | Blackfoot Tel. Coop | Landline | Noxon |
| 406-848 | CenturyLink | Landline | Gardiner |
| 406-849 | CenturyLink | Landline | Elmo |
| 406-850 | AT&T Mobility | Wireless | Billings |
| 406-851 | AT&T Mobility | Wireless | Miles City |
| 406-852 | Verizon Wireless | Wireless | Miles City |
| 406-853 | Verizon Wireless | Wireless | Miles City |
| 406-854 | CenturyLink | Landline | Marion |
| 406-855 | AT&T Mobility | Wireless | Billings |
| 406-856 | Mid-Rivers Tel. Coop | Landline | Custer |
| 406-857 | CenturyLink | Landline | Somers |
| 406-858 | Boost Subscriberco | Wireless | Kalispell |
| 406-859 | Blackfoot Tel. Coop | Landline | Philipsbg |
| 406-860 | AT&T Mobility | Wireless | Billings |
| 406-861 | AT&T Mobility | Wireless | Billings |
| 406-862 | CenturyLink | Landline | Whitefish |
| 406-863 | CenturyLink | Landline | Whitefish |
| 406-864 | Blackfoot Tel. Coop | Landline | S Alberton |
| 406-865 | Verizon Wireless | Wireless | Dillon |
| 406-866 | CenturyLink | Landline | Greatfalls |
| 406-867 | Wavenation | Landline | Billings |
| 406-868 | Verizon Wireless | Wireless | Greatfalls |
| 406-869 | Electric Lightwave | Landline | Billings |
| 406-870 | Bandwidth.com | Landline | Greatfalls |
| 406-871 | Verizon Wireless | Wireless | Kalispell |
| 406-872 | Western Montana Communitytel | Landline | Polson |
| 406-873 | CenturyLink | Landline | Cut Bank |
| 406-874 | Mid-Rivers Telephone Cooperative | Landline | Miles City |
| 406-875 | Project Tel. Co | Landline | Pompespllr |
| 406-876 | Verizon Wireless | Wireless | Billings |
| 406-877 | Reservation Tel. Coop | Landline | West Beach |
| 406-878 | Nuso | Landline | Greatfalls |
| 406-879 | AT&T Mobility | Wireless | Havre |
| 406-880 | Verizon Wireless | Wireless | Missoula |
| 406-881 | CenturyLink | Landline | Olney |
| 406-882 | Interbel Tel. Coop | Landline | Eurekarurl |
| 406-883 | CenturyLink | Landline | Polson |
| 406-884 | CenturyLink | Landline | Polson |
| 406-885 | Verizon Wireless | Wireless | Kalispell |
| 406-886 | CenturyLink | Landline | Swan Lake |
| 406-887 | CenturyLink | Landline | Finley Pt |
| 406-888 | CenturyLink | Landline | W Glacier |
| 406-889 | Interbel Tel. Coop | Landline | Eurekarurl |
| 406-890 | Spectrum | Landline | Kalispell |
| 406-891 | AT&T Mobility | Wireless | Baker |
| 406-892 | CenturyLink | Landline | Columbifls |
| 406-893 | Nemont Tel Coop | Landline | Peerless |
| 406-894 | Commio | Landline | Billings |
| 406-895 | Nemont Tel Coop | Landline | Outlook |
| 406-896 | CenturyLink | Landline | Billings |
| 406-897 | Spectrum | Landline | Columbifls |
| 406-898 | Spectrum | Landline | Bozeman |
| 406-899 | AT&T Mobility | Wireless | Greatfalls |
| 406-900 | Lumen/Level 3 | Landline | Ennis |
| 406-901 | Spectrum | Landline | Billings |
| 406-902 | Lumen/Level 3 | Landline | Sheridan |
| 406-905 | Onvoy | Landline | Joliet |
| 406-909 | Verizon Wireless | Wireless | Columbifls |
| 406-911 | Multiple Ocn Listing | Landline | Xxxxxxxxxx |
| 406-913 | Verizon Wireless | Wireless | Roundup |
| 406-914 | Verizon Wireless | Wireless | Lambert |
| 406-915 | Verizon Wireless | Wireless | So Wolf Pt |
| 406-916 | T-Mobile | Wireless | Helena |
| 406-918 | AT&T Mobility | Wireless | Libby |
| 406-919 | Terra Nova Telecom | Landline | Belgrade |
| 406-920 | Verizon Wireless | Wireless | Bozeman |
| 406-922 | Electric Lightwave | Landline | Bozeman |
| 406-923 | Commio | Landline | Greatfalls |
| 406-924 | Lumen/Level 3 | Landline | Belgrade |
| 406-925 | Verizon Wireless | Wireless | Dillon |
| 406-926 | Spectrum | Landline | Missoula |
| 406-927 | AT&T Mobility | Wireless | Billings |
| 406-928 | Verizon Wireless | Wireless | Grassrange |
| 406-929 | Onvoy | Landline | Hungryhors |
| 406-930 | Verizon Wireless | Wireless | Big Timber |
| 406-931 | Verizon Wireless | Wireless | Big Timber |
| 406-932 | Triangle Tel. Coop. Assn | Landline | Big Timber |
| 406-933 | CenturyLink | Landline | Helena |
| 406-934 | Wide Voice | Landline | Miles City |
| 406-935 | Verizon Wireless | Wireless | Broadus |
| 406-936 | Bandwidth.com | Landline | Clyde Park |
| 406-937 | Northern Tel. Coop | Landline | Sunburst |
| 406-938 | Verizon Wireless | Wireless | Alzada |
| 406-939 | Verizon Wireless | Wireless | W Glendive |
| 406-940 | AT&T Mobility | Wireless | Molt |
| 406-941 | Verizon Wireless | Wireless | W Glendive |
| 406-942 | Verizon Wireless | Wireless | Glasgow |
| 406-943 | Lumen/Level 3 | Landline | Sidney |
| 406-944 | Lumen/Level 3 | Landline | Miles City |
| 406-945 | AT&T Mobility | Wireless | Havre |
| 406-946 | Lumen/Level 3 | Landline | Livingston |
| 406-947 | Mid-Rivers Tel. Coop | Landline | Musselshll |
| 406-948 | Lumen/Level 3 | Landline | Glendive |
| 406-949 | AT&T Mobility | Wireless | Townsend |
| 406-950 | Landline | ||
| 406-951 | AT&T Mobility | Wireless | Miles City |
| 406-952 | Spectrum | Landline | Greatfalls |
| 406-953 | Sagebrush Cellular | Wireless | Hardin |
| 406-954 | Verizon Wireless | Wireless | Roy |
| 406-955 | Verizon Wireless | Wireless | Kalispell |
| 406-956 | AT&T Mobility | Wireless | Baker |
| 406-957 | Verizon Wireless | Wireless | Terry |
| 406-958 | Landline | ||
| 406-959 | Landline | ||
| 406-960 | Lumen/Level 3 | Landline | Dillon |
| 406-961 | CenturyLink | Landline | Hamilton |
| 406-962 | CenturyLink | Landline | Joliet |
| 406-963 | Nemont Tel Coop | Landline | Froidrural |
| 406-964 | CenturyLink | Landline | Greatfalls |
| 406-965 | Airus | Landline | Greatfalls |
| 406-966 | Lumen/Level 3 | Landline | Shelby |
| 406-967 | Project Tel. Co | Landline | Worden |
| 406-968 | Hd Carrier | Landline | Lewistown |
| 406-969 | Skye Telecom | Landline | Billings |
| 406-970 | CenturyLink | Landline | Billings |
| 406-971 | Verizon Wireless | Wireless | Plevna |
| 406-972 | West River Cooperative Telephone Company | Landline | Wcampcrook |
| 406-973 | Verizon Wireless | Wireless | Sidney |
| 406-974 | Verizon Wireless | Wireless | Circle |
| 406-975 | Verizon Wireless | Wireless | Ekalaka |
| 406-976 | Multiple Ocn Listing | Landline | Xxxxxxxxxx |
| 406-977 | Verizon Wireless | Wireless | Jordan |
| 406-978 | Verizon Wireless | Wireless | Baker |
| 406-979 | Verizon Wireless | Wireless | Richey |
| 406-980 | Verizon Wireless | Wireless | Townsend |
| 406-981 | Verizon Wireless | Wireless | Somiles Cy |
| 406-982 | CenturyLink | Landline | Yellow Bay |
| 406-983 | Verizon Wireless | Wireless | Ashland |
| 406-984 | Range Tel Coop | Landline | Birney |
| 406-987 | Verizon Wireless | Wireless | Glendive |
| 406-988 | Lumen/Level 3 | Landline | Dillon |
| 406-989 | AT&T Mobility | Wireless | W Glendive |
| 406-990 | AT&T Mobility | Wireless | Lame Deer |
| 406-991 | Onvoy | Landline | Marion |
| 406-992 | Onvoy | Landline | Helena |
| 406-993 | 3 Rivers Tel. Coop | Landline | Big Sky |
| 406-994 | CenturyLink | Landline | Bozeman |
| 406-995 | 3 Rivers Tel. Coop | Landline | Big Sky |
| 406-996 | Spectrum | Landline | Helena |
| 406-997 | AT&T | Landline | Fromberg |
| 406-998 | Airus | Landline | Billings |
| 406-999 | Montana Opticom | Landline | Big Sky |
About Area Code 406
Back in 1947, when the phone system was expanding across America, area code 406 got its start as one of the original codes. It covered all of Montana, a state full of wide-open skies and rugged peaks, from the moment it was born. Picture this: folks in places like Billings, the biggest city around, were finally able to chat with neighbors in Bozeman or Helena without much hassle. That's 406 for you—it's been the heartbeat of Montana's communication ever since. This code stretches across 14 cities, including spots like Anaconda and Great Falls, tying together a mix of urban hubs and quiet towns. What sets it apart is how it captures the essence of Montana life, where ranchers and outdoorsy types rely on it for everything from business deals to catching up with family. Sure, it's just a set of numbers, but think about it: in a place where distances can swallow up hours on the road, 406 has kept people connected through blizzards and sunny days alike. No overlays mean it's still the only code you need here, keeping things straightforward for locals who value that old-school simplicity. Over the years, as Montana grew, so did the demand on 406, but it hasn't split yet, holding strong for the Treasure State's stories and secrets.
⚠ Scam & Spam Alert for 406
If you're in Montana with a 406 number, watch out for shady calls that pop up now and then. IRS scams are a big one around here; scammers pretend to be from the tax office and demand payment for bogus debts. Then there's the auto warranty racket, where callers push fake extended plans for your car, trying to snag your credit card info. Medicare fraud hits home too, with fraudsters offering phony services or equipment to older residents. It's not every day, but these calls can catch you off guard. Don't panic, though—just hang up if something feels wrong. One solid tip: always check the official website or call the agency directly using a number you know is real before you hand over any details. That way, you stay a step ahead.
Local Snapshot
Montana's population hovers around 1.1 million folks, spread out over vast spaces that make it one of the least crowded states. You'll find key industries like agriculture and mining driving the economy, with farms and energy companies keeping things humming in places like Billings. The area's famous for its stunning natural beauty, from Yellowstone's geysers to the Rocky Mountains, drawing hikers and anglers from all over. And here's a quirky fact: Montana has more elk than some cities have people, which shows just how wild this place really is.
Frequently Asked Questions
Where is area code 406?
Area code 406 serves Billings and surrounding communities in Montana, including Anaconda, Billings, Bozeman, Butte, Great Falls and 9 more. It is in the Mountain time zone.
What cities are in area code 406?
Area code 406 covers 14 cities in Montana: Anaconda, Billings, Bozeman, Butte, Great Falls, Havre, Helena, Kalispell, Laurel, Livingston, and 4 more
What time zone is 406?
Area code 406 is in the Mountain time zone (UTC-7).
When was area code 406 created?
Area code 406 is one of the original area codes established in 1947 as part of the North American Numbering Plan.
Is 406 a legitimate area code?
Yes, 406 is a valid, active area code assigned to Billings, Montana. However, scammers can spoof any area code, so receiving a call from 406 doesn't guarantee the caller is actually in this area.
Has area code 406 ever been split?
Area code 406 has not been split since 1947, making it the only code for Montana. This reflects the state's relatively low population density compared to other areas.
What role does mining play in the cities covered by 406?
Mining has been a cornerstone industry in cities like Butte and Anaconda within the 406 area due to their historical copper and silver deposits. This legacy continues to influence local economies and community events today.
How does the establishment of 406 in 1947 relate to Montana's growth?
The 406 area code was created in 1947 as Montana's original code, coinciding with post-war expansion in the state. It served growing communities like Billings and Helena, supporting communication needs during that period of development.