406 Area Code in Montana, United States
Description
Area code 406 is the sole area code for the entire state of Montana, making it one of the most iconic and easily recognizable area codes in the United States. Established in 1947, it has never been split or overlaid, serving all cities including Billings, Missoula, Bozeman, Helena, and Great Falls. The 406 area code represents Montana’s vast landscapes, low population density, and strong state identity. It’s widely used in branding for local businesses, tourism, and cultural events, symbolizing the rugged independence and natural beauty of Big Sky Country. 406 remains a source of pride for Montanans and a standout among area codes for its uniqueness and statewide reach.
Time & Time Zone
Time zone:
Mountain (GMT -07:00) Current time:
Map
Major Cities
| City | Prefixes |
|---|---|
| | |
| | |
| | |
| | |
| | |
Counties
| County | Prefixes |
|---|---|
| Yellowstone | |
| Missoula | |
| Gallatin | |
| Cascade | |
| Flathead | |
| Lewis And Clark | |
| Lake | |
| Silver Bow | |
| Rosebud | |
| Hill | |
| Custer | |
| Roosevelt | |
| Fergus | |
| Richland | |
| Dawson | |
| Carbon | |
| Valley | |
| Ravalli | |
| Pondera | |
| Big Horn | |
| Beaverhead | |
| Park | |
| Jefferson | |
| Toole | |
| Stillwater | |
| Glacier | |
| Chouteau | |
| Sheridan | |
| Musselshell | |
| Phillips | |
| Lincoln | |
| Teton | |
| Mineral | |
| Deer Lodge | |
| Fallon | |
| Madison | |
| Carter | |
| Judith Basin | |
| Sanders | |
| Prairie | |
| Powell | |
| Powder River | |
| Daniels | |
| Blaine | |
| Wibaux | |
| Sweet Grass | |
| Mccone | |
| Golden Valley | |
| Liberty | |
| Broadwater | |
| Garfield | |
| Wheatland | |
| Treasure | |
| Granite | |
| Meagher | |
| Harding | |
| Petroleum |
Telephone Carriers
| Carrier | Type | Prefixes (%) |
|---|---|---|
| Qwest Corporation | Landline | 24% |
| New Cingular Wireless Pcs Llc | Wireless | 10% |
| Cellco Partnership Dba Verizon Wireless Mt | Wireless | 10% |
| Mid Rivers Telephone Cooperative Inc | Landline | 7% |
| Nemont Telephone Cooperative Inc | Landline | 5% |
| 3 Rivers Telephone Cooperative Inc | Landline | 5% |
| Mtpcs Llc | Wireless | 4% |
| Triangle Telephone Cooperative Assn Inc | Landline | 4% |
| Centurytel Of Montana Inc Dba Centurylink | Landline | 3% |
| Level 3 Communications Llc Mt | Landline | 3% |
| Bresnan Broadband Of Montana Llc Mt | Landline | 3% |
| Blackfoot Telephone Cooperative Inc | Landline | 3% |
| Central Montana Communications Inc | Landline | 2% |
| Range Telephone Cooperative Inc | Landline | 2% |
| Cable Communications Corporation | Wireless | 2% |
| 360 Networks Usa Inc Mt | Landline | 2% |
| Project Telephone Co Inc | Landline | 2% |
| Citizens Telecom Co Of Mt Frontier Comm Of Mt | Landline | 1% |
| 3 Rivers Telephone Cooperative Inc Mt | Landline | 1% |
| Northern Telephone Cooperative Inc | Landline | 1% |
| Ronan Telephone Co | Landline | 1% |
| One Eighty Communications Inc Mt | Landline | 1% |
| At T Local | Landline | 1% |
| Blackfoot Communications Inc Mt | Landline | 1% |
| Sprint Spectrum L P Mt | Wireless | 1% |
| Southern Montana Telephone Co | Landline | 1% |
| Reservation Telephone Cooperative | Landline | < 1% |
| West River Cooperative Telephone Company | Landline | < 1% |
| Sagebrush Cellular Inc | Landline | < 1% |
| Hot Springs Telephone Co | Landline | < 1% |
| Ymax Communications Corp Mt | Landline | < 1% |
| Smart Call Llc | Landline | < 1% |
| Tct West Inc | Landline | < 1% |
| Montana Opticom Llc Mt | Landline | < 1% |
| Interbel Telephone Cooperative Inc Mt | Landline | < 1% |
| Bandwidth Com Clec Llc Mt | Landline | < 1% |
| Pacific Telecom Communications Group Mt | Landline | < 1% |
| Western Montana Communitytel Inc Mt | Landline | < 1% |
| 365 Wireless Llc | Wireless | < 1% |
| Contact Communications Inc Wyoming | Landline | < 1% |
| Polson Communitytel Inc Mt | Landline | < 1% |
| Interbel Telephone Cooperative Inc | Landline | < 1% |
| Eltopia Communications Llc Mt | Landline | < 1% |
| Nexus Communications Inc | Wireless | < 1% |
| Lincoln Telephone Company Inc | Landline | < 1% |
| Rt Communications | Landline | < 1% |
| Range Telephone Cooperative Inc Mt | Landline | < 1% |
| Tc Systems Inc Mt | Landline | < 1% |
| Tri Tel Inc Mt | Landline | < 1% |
| Midstate Communications Inc | Landline | < 1% |
| Mcimetro Access Transmission Services Llc | Landline | < 1% |
Prefixes
| Prefix | City | Carrier | Type |
|---|---|---|---|
| Pendroy | 3 Rivers Telephone Cooperative, Inc. | Landline | |
| Poplar | Nemont Telephone Cooperative, Inc. | Landline | |
| Grass Range | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Belgrade | Mcimetro Access Transmission Services Llc | Landline | |
| Great Falls | New Cingular Wireless Pcs, Llc | Wireless | |
| Broadus | Cable & Communications Corporation | Wireless | |
| Butte | Sprint Spectrum L.p.- Mt | Wireless | |
| Poplar | Nemont Telephone Cooperative, Inc. | Landline | |
| Milltown | New Cingular Wireless Pcs, Llc | Wireless | |
| Billings | Qwest Corporation | Landline | |
| Kinsey | Qwest Corporation | Landline | |
| Sweet Grass | Northern Telephone Cooperative, Inc. | Landline | |
| Great Falls | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Biddle | Range Telephone Cooperative, Inc. | Landline | |
| Big Timber | Triangle Telephone Cooperative Assn., Inc. | Landline | |
| Shepherd | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Whitefish | 360networks (usa) Inc. - Mt | Landline | |
| Froid | Nemont Telephone Cooperative, Inc. | Landline | |
| Baker | New Cingular Wireless Pcs, Llc | Wireless | |
| Polson | Centurytel of Montana, Inc. Dba Centurylink | Landline | |
| Glasgow | Nemont Telephone Cooperative, Inc. | Landline | |
| Jefferson City | Qwest Corporation | Landline | |
| Saco | Nemont Telephone Cooperative, Inc. | Landline | |
| Billings | Qwest Corporation | Landline | |
| Lewistown | Level 3 Communications, Llc - Mt | Landline | |
| Helena | Mcimetro Access Transmission Services Llc | Landline | |
| Billings | One Eighty Communications, Inc. - Mt | Landline | |
| Two Dot | Central Montana Communications, Inc. | Landline | |
| Grass Range | Cable & Communications Corporation | Wireless | |
| Hardin | New Cingular Wireless Pcs, Llc | Wireless | |
| Billings | Mtpcs, Llc | Wireless | |
| Dillon | 3 Rivers Telephone Cooperative, Inc. | Landline | |
| Carter | Mtpcs, Llc | Wireless | |
| Loring | Triangle Telephone Cooperative Assn., Inc. | Landline | |
| Helena | 3 Rivers Telephone Cooperative, Inc. - Mt | Landline | |
| Hamilton | Qwest Corporation | Landline | |
| Helena | New Cingular Wireless Pcs, Llc | Wireless | |
| Coffee Creek | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Glasgow | Nemont Telephone Cooperative, Inc. | Landline | |
| Sheridan | 3 Rivers Telephone Cooperative, Inc. | Landline | |
| Avon | Blackfoot Telephone Cooperative, Inc. | Landline | |
| Missoula | Bresnan Broadband of Montana, Llc - Mt | Landline | |
| Livingston | Qwest Corporation | Landline | |
| Lambert | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Bozeman | Qwest Corporation | Landline | |
| Willow Creek | Qwest Corporation | Landline | |
| Opheim | Nemont Telephone Cooperative, Inc. | Landline | |
| Volborg | Range Telephone Cooperative, Inc. | Landline | |
| Nashua | Nemont Telephone Cooperative, Inc. | Landline | |
| Alzada | Range Telephone Cooperative, Inc. | Landline | |
| Helena | Mtpcs, Llc | Wireless | |
| Red Lodge | Qwest Corporation | Landline | |
| Big Sandy | Triangle Telephone Cooperative Assn., Inc. | Landline | |
| Marion | 360networks (usa) Inc. - Mt | Landline | |
| Flaxville | Nemont Telephone Cooperative, Inc. | Landline | |
| Helena | Bresnan Broadband of Montana, Llc - Mt | Landline | |
| Homestead | Nemont Telephone Cooperative, Inc. | Landline | |
| Broadus | Range Telephone Cooperative, Inc. | Landline | |
| Florence | Qwest Corporation | Landline | |
| Terry | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Missoula | Qwest Corporation | Landline | |
| Mosby | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Missoula | At&t Local | Landline | |
| Browning | 3 Rivers Telephone Cooperative, Inc. | Landline | |
| Helena | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Billings | Qwest Corporation | Landline | |
| Wyola | Qwest Corporation | Landline | |
| Pompeys Pillar | Project Telephone Co., Inc. | Landline | |
| Big Sky | 3 Rivers Telephone Cooperative, Inc. | Landline | |
| Billings | Qwest Corporation | Landline | |
| Ovando | Blackfoot Telephone Cooperative, Inc. | Landline | |
| Babb | Qwest Corporation | Landline | |
| Dillon | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Billings | 365 Wireless, Llc | Wireless | |
| Medicine Lake | Nemont Telephone Cooperative, Inc. | Landline | |
| Billings | Qwest Corporation | Landline | |
| Butte | Blackfoot Telephone Cooperative, Inc. | Landline | |
| Scobey | Nemont Telephone Cooperative, Inc. | Landline | |
| Cut Bank | Bresnan Broadband of Montana, Llc - Mt | Landline | |
| Havre | Triangle Telephone Cooperative Assn., Inc. | Landline | |
| Cut Bank | New Cingular Wireless Pcs, Llc | Wireless | |
| Lewistown | Central Montana Communications, Inc. | Landline | |
| Simms | 3 Rivers Telephone Cooperative, Inc. | Landline | |
| Whitefish | Centurytel of Montana, Inc. Dba Centurylink | Landline | |
| Shelby | Northern Telephone Cooperative, Inc. | Landline | |
| Billings | Qwest Corporation | Landline | |
| Ronan | Ronan Telephone Co. | Landline | |
| Worden | Project Telephone Co., Inc. | Landline | |
| Great Falls | Qwest Corporation | Landline | |
| Bigfork | 360networks (usa) Inc. - Mt | Landline | |
| Billings | Eltopia Communications, Llc - Mt | Landline | |
| Great Falls | New Cingular Wireless Pcs, Llc | Wireless | |
| Columbus | New Cingular Wireless Pcs, Llc | Wireless | |
| Sidney | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Wolf Point | Cable & Communications Corporation | Wireless | |
| Bozeman | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Missoula | 360networks (usa) Inc. - Mt | Landline | |
| Ekalaka | West River Cooperative Telephone Company | Landline | |
| Brockway | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Judith Gap | Central Montana Communications, Inc. | Landline | |
| Missoula | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Anaconda | Qwest Corporation | Landline | |
| Fort Harrison | Qwest Corporation | Landline | |
| Missoula | Level 3 Communications, Llc - Mt | Landline | |
| Helena | 360networks (usa) Inc. - Mt | Landline | |
| Jordan | Cable & Communications Corporation | Wireless | |
| Absarokee | Mtpcs, Llc | Wireless | |
| Anaconda | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Anaconda | Qwest Corporation | Landline | |
| Fallon | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Billings | Mcimetro Access Transmission Services Llc | Landline | |
| Missoula | Bresnan Broadband of Montana, Llc - Mt | Landline | |
| Garryowen | Project Telephone Co., Inc. | Landline | |
| Chinook | Triangle Telephone Cooperative Assn., Inc. | Landline | |
| Saint Marie | Nemont Telephone Cooperative, Inc. | Landline | |
| Saint Ignatius | Blackfoot Telephone Cooperative, Inc. | Landline | |
| Miles City | Qwest Corporation | Landline | |
| Chester | Triangle Telephone Cooperative Assn., Inc. | Landline | |
| Plevna | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Broadview | Triangle Telephone Cooperative Assn., Inc. | Landline | |
| Stevensville | Bresnan Broadband of Montana, Llc - Mt | Landline | |
| Ashland | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Ryegate | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Clancy | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Black Eagle | Qwest Corporation | Landline | |
| Vaughn | Qwest Corporation | Landline | |
| Helena | Sprint Spectrum L.p.- Mt | Wireless | |
| Geyser | New Cingular Wireless Pcs, Llc | Wireless | |
| Missoula | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Ronan | Ronan Telephone Co. | Landline | |
| Lewistown | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Frazer | Nemont Telephone Cooperative, Inc. | Landline | |
| Stevensville | Mtpcs, Llc | Wireless | |
| Hathaway | Mtpcs, Llc | Wireless | |
| Billings | Eltopia Communications, Llc - Mt | Landline | |
| Lewistown | Mtpcs, Llc | Wireless | |
| Missoula | Qwest Corporation | Landline | |
| Missoula | Qwest Corporation | Landline | |
| Whitefish | Centurytel of Montana, Inc. Dba Centurylink | Landline | |
| Eureka | Interbel Telephone Cooperative, Inc. | Landline | |
| Bozeman | Sprint Spectrum L.p.- Mt | Wireless | |
| Cameron | 3 Rivers Telephone Cooperative, Inc. | Landline | |
| Conrad | New Cingular Wireless Pcs, Llc | Wireless | |
| Miles City | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Great Falls | 3 Rivers Telephone Cooperative, Inc. | Landline | |
| Dillon | Southern Montana Telephone Co. | Landline | |
| Great Falls | 3 Rivers Telephone Cooperative, Inc. | Landline | |
| Carter | 3 Rivers Telephone Cooperative, Inc. | Landline | |
| Superior | New Cingular Wireless Pcs, Llc | Wireless | |
| Anaconda | New Cingular Wireless Pcs, Llc | Wireless | |
| Clancy | Qwest Corporation | Landline | |
| Big Timber | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Belgrade | New Cingular Wireless Pcs, Llc | Wireless | |
| Columbus | Qwest Corporation | Landline | |
| Condon | Blackfoot Telephone Cooperative, Inc. | Landline | |
| Laurel | Qwest Corporation | Landline | |
| Bighorn | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Polson | Ronan Telephone Co. | Landline | |
| Bearcreek | Qwest Corporation | Landline | |
| Poplar | Nemont Telephone Cooperative, Inc. | Landline | |
| Missoula | New Cingular Wireless Pcs, Llc | Wireless | |
| Great Falls | Central Montana Communications, Inc. | Landline | |
| Olive | Range Telephone Cooperative, Inc. | Landline | |
| Cut Bank | Northern Telephone Cooperative, Inc. | Landline | |
| Kalispell | New Cingular Wireless Pcs, Llc | Wireless | |
| Bridger | Qwest Corporation | Landline | |
| Belfry | Project Telephone Co., Inc. | Landline | |
| Raymond | Nemont Telephone Cooperative, Inc. | Landline | |
| Bozeman | Qwest Corporation | Landline | |
| Dutton | 3 Rivers Telephone Cooperative, Inc. | Landline | |
| Great Falls | Qwest Corporation | Landline | |
| Bozeman | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| West Glacier | Centurytel of Montana, Inc. Dba Centurylink | Landline | |
| Pony | 3 Rivers Telephone Cooperative, Inc. | Landline | |
| Essex | Qwest Corporation | Landline | |
| Billings | Qwest Corporation | Landline | |
| Forsyth | Range Telephone Cooperative, Inc. | Landline | |
| Hardin | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Roundup | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Billings | At&t Local | Landline | |
| Shelby | New Cingular Wireless Pcs, Llc | Wireless | |
| Dillon | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Helena | Level 3 Communications, Llc - Mt | Landline | |
| Great Falls | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Missoula | Blackfoot Communications, Inc. - Mt | Landline | |
| Roy | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Augusta | 3 Rivers Telephone Cooperative, Inc. | Landline | |
| Glasgow | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Livingston | Qwest Corporation | Landline | |
| Victor | Qwest Corporation | Landline | |
| Bozeman | Qwest Corporation | Landline | |
| Miles City | Cable & Communications Corporation | Wireless | |
| Sumatra | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Toston | Qwest Corporation | Landline | |
| Polson | Polson Communitytel, Inc. - Mt | Landline | |
| Wilsall | Qwest Corporation | Landline | |
| Wise River | Southern Montana Telephone Co. | Landline | |
| Malta | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Hall | Blackfoot Telephone Cooperative, Inc. | Landline | |
| Belt | 3 Rivers Telephone Cooperative, Inc. | Landline | |
| Bainville | Nemont Telephone Cooperative, Inc. | Landline | |
| Geyser | Qwest Corporation | Landline | |
| Columbia Falls | Bresnan Broadband of Montana, Llc - Mt | Landline | |
| Dayton | Centurytel of Montana, Inc. Dba Centurylink | Landline | |
| Denton | Central Montana Communications, Inc. | Landline | |
| Fromberg | Qwest Corporation | Landline | |
| Gardiner | Qwest Corporation | Landline | |
| Miles City | Range Telephone Cooperative, Inc. | Landline | |
| Bigfork | Bresnan Broadband of Montana, Llc - Mt | Landline | |
| Havre | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Trout Creek | Blackfoot Telephone Cooperative, Inc. | Landline | |
| Somers | Centurytel of Montana, Inc. Dba Centurylink | Landline | |
| Scobey | Nemont Telephone Cooperative, Inc. | Landline | |
| Oilmont | Northern Telephone Cooperative, Inc. | Landline | |
| Clinton | Bresnan Broadband of Montana, Llc - Mt | Landline | |
| De Borgia | Blackfoot Telephone Cooperative, Inc. | Landline | |
| Vida | Cable & Communications Corporation | Wireless | |
| Harlem | Central Montana Communications, Inc. | Landline | |
| Billings | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Glendive | New Cingular Wireless Pcs, Llc | Wireless | |
| Butte | Qwest Corporation | Landline | |
| Glendive | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Libby | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Valier | 3 Rivers Telephone Cooperative, Inc. | Landline | |
| Baker | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Power | 3 Rivers Telephone Cooperative, Inc. | Landline | |
| Wibaux | Midstate Communications, Inc. | Landline | |
| Clyde Park | Qwest Corporation | Landline | |
| Dixon | Blackfoot Telephone Cooperative, Inc. | Landline | |
| Hogeland | Triangle Telephone Cooperative Assn., Inc. | Landline | |
| Butte | Mtpcs, Llc | Wireless | |
| Plentywood | Nemont Telephone Cooperative, Inc. | Landline | |
| Loma | Triangle Telephone Cooperative Assn., Inc. | Landline | |
| Billings | Bresnan Broadband of Montana, Llc - Mt | Landline | |
| Dillon | New Cingular Wireless Pcs, Llc | Wireless | |
| Bonner | Blackfoot Telephone Cooperative, Inc. | Landline | |
| Charlo | Western Montana Communitytel Inc. - Mt | Landline | |
| Savage | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Helena | Ymax Communications Corp. - Mt | Landline | |
| Conrad | Mtpcs, Llc | Wireless | |
| Helena | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Brady | 3 Rivers Telephone Cooperative, Inc. | Landline | |
| Polson | Centurytel of Montana, Inc. Dba Centurylink | Landline | |
| Havre | Qwest Corporation | Landline | |
| Seeley Lake | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Conner | Qwest Corporation | Landline | |
| Gallatin Gateway | Qwest Corporation | Landline | |
| Kalispell | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Laurel | 360networks (usa) Inc. - Mt | Landline | |
| Brockway | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Shelby | Qwest Corporation | Landline | |
| Thompson Falls | New Cingular Wireless Pcs, Llc | Wireless | |
| Bozeman | 360networks (usa) Inc. - Mt | Landline | |
| Billings | Qwest Corporation | Landline | |
| Roscoe | Project Telephone Co., Inc. | Landline | |
| Seeley Lake | New Cingular Wireless Pcs, Llc | Wireless | |
| Bigfork | Centurytel of Montana, Inc. Dba Centurylink | Landline | |
| Colstrip | Qwest Corporation | Landline | |
| Marion | Centurytel of Montana, Inc. Dba Centurylink | Landline | |
| Butte | Qwest Corporation | Landline | |
| Eureka | Citizens Telecom Co of Mt-frontier Comm of Mt | Landline | |
| Clancy | Qwest Corporation | Landline | |
| Kalispell | New Cingular Wireless Pcs, Llc | Wireless | |
| Wolf Point | Nemont Telephone Cooperative, Inc. | Landline | |
| Helena | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Culbertson | New Cingular Wireless Pcs, Llc | Wireless | |
| Culbertson | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Miles City | Level 3 Communications, Llc - Mt | Landline | |
| Kremlin | Triangle Telephone Cooperative Assn., Inc. | Landline | |
| Forsyth | Range Telephone Cooperative, Inc. - Mt | Landline | |
| Lewistown | Qwest Corporation | Landline | |
| Hingham | Triangle Telephone Cooperative Assn., Inc. | Landline | |
| Wolf Point | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Choteau | 3 Rivers Telephone Cooperative, Inc. | Landline | |
| Billings | New Cingular Wireless Pcs, Llc | Wireless | |
| Lodge Grass | 360networks (usa) Inc. - Mt | Landline | |
| Butte | New Cingular Wireless Pcs, Llc | Wireless | |
| Libby | Citizens Telecom Co of Mt-frontier Comm of Mt | Landline | |
| Rudyard | Triangle Telephone Cooperative Assn., Inc. | Landline | |
| Bloomfield | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Billings | Mtpcs, Llc | Wireless | |
| Missoula | Qwest Corporation | Landline | |
| Kalispell | New Cingular Wireless Pcs, Llc | Wireless | |
| Billings | Qwest Corporation | Landline | |
| Great Falls | 360networks (usa) Inc. - Mt | Landline | |
| East Glacier Park | Qwest Corporation | Landline | |
| Saco | Nemont Telephone Cooperative, Inc. | Landline | |
| Huntley | Project Telephone Co., Inc. | Landline | |
| Billings | One Eighty Communications, Inc. - Mt | Landline | |
| Helena | Bresnan Broadband of Montana, Llc - Mt | Landline | |
| Fort Benton | Triangle Telephone Cooperative Assn., Inc. | Landline | |
| Kalispell | Centurytel of Montana, Inc. Dba Centurylink | Landline | |
| Ekalaka | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Billings | New Cingular Wireless Pcs, Llc | Wireless | |
| Alzada | Cable & Communications Corporation | Wireless | |
| Great Falls | Qwest Corporation | Landline | |
| Polson | Mtpcs, Llc | Wireless | |
| Helena | New Cingular Wireless Pcs, Llc | Wireless | |
| Belgrade | New Cingular Wireless Pcs, Llc | Wireless | |
| Billings | New Cingular Wireless Pcs, Llc | Wireless | |
| Billings | Tri Tel, Inc. - Mt | Landline | |
| Butte | Level 3 Communications, Llc - Mt | Landline | |
| Denton | Triangle Telephone Cooperative Assn., Inc. | Landline | |
| Missoula | Qwest Corporation | Landline | |
| Busby | Range Telephone Cooperative, Inc. | Landline | |
| Moore | Central Montana Communications, Inc. | Landline | |
| Dillon | Mtpcs, Llc | Wireless | |
| Livingston | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Clancy | Qwest Corporation | Landline | |
| Dodson | Triangle Telephone Cooperative Assn., Inc. | Landline | |
| Missoula | Tc Systems, Inc. - Mt | Landline | |
| Great Falls | Blackfoot Communications, Inc. - Mt | Landline | |
| Great Falls | 3 Rivers Telephone Cooperative, Inc. | Landline | |
| Kalispell | Centurytel of Montana, Inc. Dba Centurylink | Landline | |
| Helena | Qwest Corporation | Landline | |
| Livingston | Level 3 Communications, Llc - Mt | Landline | |
| Sidney | Reservation Telephone Cooperative | Landline | |
| Great Falls | Bresnan Broadband of Montana, Llc - Mt | Landline | |
| Billings | Qwest Corporation | Landline | |
| Libby | New Cingular Wireless Pcs, Llc | Wireless | |
| Great Falls | 3 Rivers Telephone Cooperative, Inc. - Mt | Landline | |
| Medicine Lake | Nemont Telephone Cooperative, Inc. | Landline | |
| Butte | Qwest Corporation | Landline | |
| Rosebud | New Cingular Wireless Pcs, Llc | Wireless | |
| Warm Springs | Qwest Corporation | Landline | |
| Billings | Qwest Corporation | Landline | |
| Sidney | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Missoula | New Cingular Wireless Pcs, Llc | Wireless | |
| Bozeman | Smart Call, Llc | Landline | |
| Billings | Bandwidth.com Clec, Llc - Mt | Landline | |
| Bozeman | One Eighty Communications, Inc. - Mt | Landline | |
| Billings | Qwest Corporation | Landline | |
| Bozeman | Bresnan Broadband of Montana, Llc - Mt | Landline | |
| Polson | Centurytel of Montana, Inc. Dba Centurylink | Landline | |
| Kalispell | Centurytel of Montana, Inc. Dba Centurylink | Landline | |
| Stevensville | Qwest Corporation | Landline | |
| Anaconda | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Dillon | Qwest Corporation | Landline | |
| Columbus | 360networks (usa) Inc. - Mt | Landline | |
| Missoula | Qwest Corporation | Landline | |
| Forsyth | Level 3 Communications, Llc - Mt | Landline | |
| Larslan | Nemont Telephone Cooperative, Inc. | Landline | |
| Lakeside | Bresnan Broadband of Montana, Llc - Mt | Landline | |
| Alberton | Blackfoot Telephone Cooperative, Inc. | Landline | |
| Whitehall | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Great Falls | Level 3 Communications, Llc - Mt | Landline | |
| Helena | New Cingular Wireless Pcs, Llc | Wireless | |
| Billings | Bresnan Broadband of Montana, Llc - Mt | Landline | |
| Missoula | Bresnan Broadband of Montana, Llc - Mt | Landline | |
| Pray | Qwest Corporation | Landline | |
| Wibaux | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Galata | Northern Telephone Cooperative, Inc. | Landline | |
| Fairfield | 3 Rivers Telephone Cooperative, Inc. | Landline | |
| Great Falls | 365 Wireless, Llc | Wireless | |
| Miles City | Qwest Corporation | Landline | |
| Bonner | New Cingular Wireless Pcs, Llc | Wireless | |
| Bigfork | 360networks (usa) Inc. - Mt | Landline | |
| Cooke City | Qwest Corporation | Landline | |
| Eureka | Interbel Telephone Cooperative, Inc. | Landline | |
| Great Falls | 3 Rivers Telephone Cooperative, Inc. | Landline | |
| Billings | New Cingular Wireless Pcs, Llc | Wireless | |
| Malmstrom Afb | Qwest Corporation | Landline | |
| Missoula | Bresnan Broadband of Montana, Llc - Mt | Landline | |
| Helena | New Cingular Wireless Pcs, Llc | Landline | |
| Great Falls | 3 Rivers Telephone Cooperative, Inc. - Mt | Landline | |
| Saint Ignatius | Mtpcs, Llc | Wireless | |
| Great Falls | Qwest Corporation | Landline | |
| Great Falls | Level 3 Communications, Llc - Mt | Landline | |
| Belfry | Qwest Corporation | Landline | |
| Shelby | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Westby | Nemont Telephone Cooperative, Inc. | Landline | |
| Darby | Blackfoot Telephone Cooperative, Inc. | Landline | |
| Shelby | Level 3 Communications, Llc - Mt | Landline | |
| East Helena | Qwest Corporation | Landline | |
| Bozeman | Qwest Corporation | Landline | |
| Crow Agency | Project Telephone Co., Inc. | Landline | |
| Belgrade | Level 3 Communications, Llc - Mt | Landline | |
| Columbus | Triangle Telephone Cooperative Assn., Inc. | Landline | |
| Lakeside | Centurytel of Montana, Inc. Dba Centurylink | Landline | |
| Valier | Qwest Corporation | Landline | |
| Somers | Bresnan Broadband of Montana, Llc - Mt | Landline | |
| Whitefish | Centurytel of Montana, Inc. Dba Centurylink | Landline | |
| Richey | Cable & Communications Corporation | Wireless | |
| Virginia City | 3 Rivers Telephone Cooperative, Inc. | Landline | |
| Cut Bank | Mtpcs, Llc | Wireless | |
| Butte | Qwest Corporation | Landline | |
| Billings | Qwest Corporation | Landline | |
| West Yellowstone | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Dillon | Southern Montana Telephone Co. | Landline | |
| Lewistown | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Lambert | Cable & Communications Corporation | Wireless | |
| Billings | 360networks (usa) Inc. - Mt | Landline | |
| Kalispell | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Hamilton | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Silver Star | 3 Rivers Telephone Cooperative, Inc. | Landline | |
| Miles City | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Plentywood | Nemont Telephone Cooperative, Inc. | Landline | |
| Sidney | New Cingular Wireless Pcs, Llc | Wireless | |
| Bozeman | Montana Opticom, Llc - Mt | Landline | |
| Charlo | Blackfoot Telephone Cooperative, Inc. | Landline | |
| Missoula | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Belgrade | Qwest Corporation | Landline | |
| Red Lodge | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| East Helena | Qwest Corporation | Landline | |
| Belfry | 360networks (usa) Inc. - Mt | Landline | |
| Deer Lodge | Mtpcs, Llc | Wireless | |
| Billings | Qwest Corporation | Landline | |
| Glendive | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Wibaux | Qwest Corporation | Landline | |
| Great Falls | Qwest Corporation | Landline | |
| Canyon Creek | 360networks (usa) Inc. - Mt | Landline | |
| West Yellowstone | Qwest Corporation | Landline | |
| Ledger | Triangle Telephone Cooperative Assn., Inc. | Landline | |
| Great Falls | Qwest Corporation | Landline | |
| Helena | At&t Local | Landline | |
| Ulm | Qwest Corporation | Landline | |
| Columbus | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Hardin | Level 3 Communications, Llc - Mt | Landline | |
| Kalispell | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Billings | Qwest Corporation | Landline | |
| Silver Star | Qwest Corporation | Landline | |
| Billings | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Melstone | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Bozeman | Nexus Communications, Inc. | Wireless | |
| Columbia Falls | Contact Communications, Inc. - Wyoming | Landline | |
| Birney | Range Telephone Cooperative, Inc. | Landline | |
| Billings | One Eighty Communications, Inc. - Mt | Landline | |
| Missoula | Qwest Corporation | Landline | |
| Moccasin | Central Montana Communications, Inc. | Landline | |
| Bonner | Qwest Corporation | Landline | |
| Greycliff | Mtpcs, Llc | Wireless | |
| Glendive | Cable & Communications Corporation | Wireless | |
| Billings | One Eighty Communications, Inc. - Mt | Landline | |
| Medicine Lake | Nemont Telephone Cooperative, Inc. | Landline | |
| Laurel | New Cingular Wireless Pcs, Llc | Wireless | |
| Townsend | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Helena | Level 3 Communications, Llc - Mt | Landline | |
| Mc Leod | Triangle Telephone Cooperative Assn., Inc. | Landline | |
| Brockton | Nemont Telephone Cooperative, Inc. | Landline | |
| Billings | New Cingular Wireless Pcs, Llc | Wireless | |
| Clancy | Qwest Corporation | Landline | |
| Sidney | Level 3 Communications, Llc - Mt | Landline | |
| Great Falls | Qwest Corporation | Landline | |
| Plains | Blackfoot Telephone Cooperative, Inc. | Landline | |
| Butte | Qwest Corporation | Landline | |
| Geyser | 3 Rivers Telephone Cooperative, Inc. | Landline | |
| Sidney | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Great Falls | Mtpcs, Llc | Wireless | |
| Joliet | 360networks (usa) Inc. - Mt | Landline | |
| Rosebud | New Cingular Wireless Pcs, Llc | Landline | |
| Lewistown | New Cingular Wireless Pcs, Llc | Wireless | |
| Fort Peck | Nemont Telephone Cooperative, Inc. | Landline | |
| Bozeman | New Cingular Wireless Pcs, Llc | Wireless | |
| Superior | Blackfoot Telephone Cooperative, Inc. | Landline | |
| Kila | New Cingular Wireless Pcs, Llc | Wireless | |
| Martinsdale | Central Montana Communications, Inc. | Landline | |
| Opheim | Nemont Telephone Cooperative, Inc. | Landline | |
| Missoula | Level 3 Communications, Llc - Mt | Landline | |
| Hot Springs | Hot Springs Telephone Co. | Landline | |
| Richey | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Great Falls | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Glendive | Level 3 Communications, Llc - Mt | Landline | |
| Missoula | Bresnan Broadband of Montana, Llc - Mt | Landline | |
| Missoula | Cellco Partnership Dba Verizon Wireless - Mt | Landline | |
| Chester | Triangle Telephone Cooperative Assn., Inc. | Landline | |
| Helena | Qwest Corporation | Landline | |
| Glasgow | Sagebrush Cellular, Inc. | Landline | |
| Bozeman | Qwest Corporation | Landline | |
| Box Elder | Triangle Telephone Cooperative Assn., Inc. | Landline | |
| Joliet | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Gildford | Triangle Telephone Cooperative Assn., Inc. | Landline | |
| Billings | Bresnan Broadband of Montana, Llc - Mt | Landline | |
| Billings | Sprint Spectrum L.p.- Mt | Wireless | |
| Shelby | Mtpcs, Llc | Wireless | |
| Jordan | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Reed Point | Triangle Telephone Cooperative Assn., Inc. | Landline | |
| Billings | Qwest Corporation | Landline | |
| Red Lodge | Mtpcs, Llc | Wireless | |
| Billings | New Cingular Wireless Pcs, Llc | Wireless | |
| Glendive | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Butte | New Cingular Wireless Pcs, Llc | Wireless | |
| Billings | One Eighty Communications, Inc. - Mt | Landline | |
| Missoula | Qwest Corporation | Landline | |
| Noxon | Blackfoot Telephone Cooperative, Inc. | Landline | |
| Colstrip | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Forsyth | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Glendive | Qwest Corporation | Landline | |
| Sidney | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Bigfork | Centurytel of Montana, Inc. Dba Centurylink | Landline | |
| Roundup | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Stevensville | New Cingular Wireless Pcs, Llc | Wireless | |
| Marion | Centurytel of Montana, Inc. Dba Centurylink | Landline | |
| Ryegate | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Glendive | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Great Falls | Qwest Corporation | Landline | |
| Frenchtown | Level 3 Communications, Llc - Mt | Landline | |
| Great Falls | 360networks (usa) Inc. - Mt | Landline | |
| Billings | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Lavina | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Big Sandy | Triangle Telephone Cooperative Assn., Inc. | Landline | |
| Miles City | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Dillon | Level 3 Communications, Llc - Mt | Landline | |
| Forsyth | Mtpcs, Llc | Wireless | |
| Butte | At&t Local | Landline | |
| Culbertson | New Cingular Wireless Pcs, Llc | Wireless | |
| Billings | Level 3 Communications, Llc - Mt | Landline | |
| Geraldine | Central Montana Communications, Inc. | Landline | |
| Box Elder | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Charlo | Blackfoot Telephone Cooperative, Inc. | Landline | |
| Glasgow | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Whitefish | Centurytel of Montana, Inc. Dba Centurylink | Landline | |
| Terry | Qwest Corporation | Landline | |
| Great Falls | New Cingular Wireless Pcs, Llc | Wireless | |
| Bozeman | Mtpcs, Llc | Wireless | |
| Lewistown | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Canyon Creek | Lincoln Telephone Company, Inc. | Landline | |
| Fort Smith | Project Telephone Co., Inc. | Landline | |
| Ashland | Cable & Communications Corporation | Wireless | |
| Livingston | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Ronan | Ymax Communications Corp. - Mt | Landline | |
| Butte | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Melrose | 3 Rivers Telephone Cooperative, Inc. | Landline | |
| Hardin | Mtpcs, Llc | Wireless | |
| Kalispell | Bresnan Broadband of Montana, Llc - Mt | Landline | |
| Hysham | Range Telephone Cooperative, Inc. | Landline | |
| Billings | Bresnan Broadband of Montana, Llc - Mt | Landline | |
| Billings | Sagebrush Cellular, Inc. | Wireless | |
| Clancy | Qwest Corporation | Landline | |
| West Yellowstone | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Malta | Central Montana Communications, Inc. | Landline | |
| Miles City | Mtpcs, Llc | Wireless | |
| Kalispell | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Miles City | New Cingular Wireless Pcs, Llc | Wireless | |
| Missoula | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Alzada | Rt Communications | Landline | |
| Helena | Qwest Corporation | Landline | |
| Whitefish | 360networks (usa) Inc. - Mt | Landline | |
| Wise River | Southern Montana Telephone Co. | Landline | |
| Boulder | 360networks (usa) Inc. - Mt | Landline | |
| Elmo | 360networks (usa) Inc. - Mt | Landline | |
| Belfry | Tct West, Inc. | Landline | |
| Ennis | 3 Rivers Telephone Cooperative, Inc. | Landline | |
| Great Falls | Sprint Spectrum L.p.- Mt | Wireless | |
| Wibaux | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Saint Regis | Blackfoot Telephone Cooperative, Inc. | Landline | |
| Glasgow | Nemont Telephone Cooperative, Inc. | Landline | |
| Great Falls | At&t Local | Landline | |
| Browning | Mtpcs, Llc | Wireless | |
| Missoula | Qwest Corporation | Landline | |
| Bozeman | Level 3 Communications, Llc - Mt | Landline | |
| Ronan | Ronan Telephone Co. | Landline | |
| Missoula | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Ringling | Central Montana Communications, Inc. | Landline | |
| Malta | Triangle Telephone Cooperative Assn., Inc. | Landline | |
| Libby | Citizens Telecom Co of Mt-frontier Comm of Mt | Landline | |
| Boyd | Qwest Corporation | Landline | |
| Missoula | Qwest Corporation | Landline | |
| Divide | Mtpcs, Llc | Wireless | |
| Kalispell | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Helena | New Cingular Wireless Pcs, Llc | Wireless | |
| Missoula | Blackfoot Telephone Cooperative, Inc. | Landline | |
| Hardin | Level 3 Communications, Llc - Mt | Landline | |
| Manhattan | Qwest Corporation | Landline | |
| Billings | Tc Systems, Inc. - Mt | Landline | |
| Plevna | New Cingular Wireless Pcs, Llc | Wireless | |
| Butte | Bresnan Broadband of Montana, Llc - Mt | Landline | |
| Great Falls | Pacific Telecom Communications Group - Mt | Landline | |
| Livingston | New Cingular Wireless Pcs, Llc | Wireless | |
| Shelby | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Garrison | Qwest Corporation | Landline | |
| Ronan | Mtpcs, Llc | Wireless | |
| Roundup | Cable & Communications Corporation | Wireless | |
| Kalispell | Bresnan Broadband of Montana, Llc - Mt | Wireless | |
| Sidney | Qwest Corporation | Landline | |
| Dodson | Central Montana Communications, Inc. | Landline | |
| Wolf Creek | Qwest Corporation | Landline | |
| Roy | Cable & Communications Corporation | Wireless | |
| Glasgow | Mtpcs, Llc | Wireless | |
| Wyola | Project Telephone Co., Inc. | Landline | |
| Great Falls | Sprint Spectrum L.p.- Mt | Wireless | |
| Livingston | New Cingular Wireless Pcs, Llc | Wireless | |
| Helena | Bresnan Broadband of Montana, Llc - Mt | Landline | |
| Ronan | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Glendive | Qwest Corporation | Landline | |
| Great Falls | Level 3 Communications, Llc - Mt | Landline | |
| Malta | Sagebrush Cellular, Inc. | Wireless | |
| Three Forks | 360networks (usa) Inc. - Mt | Landline | |
| Sunburst | Northern Telephone Cooperative, Inc. | Landline | |
| Roundup | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Dutton | Qwest Corporation | Landline | |
| Belgrade | Qwest Corporation | Landline | |
| Billings | 360networks (usa) Inc. - Mt | Landline | |
| Gallatin Gateway | Montana Opticom, Llc - Mt | Landline | |
| Decker | Range Telephone Cooperative, Inc. | Landline | |
| Hamilton | Qwest Corporation | Landline | |
| Bozeman | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Butte | 360networks (usa) Inc. - Mt | Landline | |
| Eureka | Interbel Telephone Cooperative, Inc. - Mt | Landline | |
| Bozeman | New Cingular Wireless Pcs, Llc | Wireless | |
| Butte | Qwest Corporation | Landline | |
| Sidney | Level 3 Communications, Llc - Mt | Landline | |
| Bozeman | Sprint Spectrum L.p.- Mt | Wireless | |
| Bozeman | Bresnan Broadband of Montana, Llc - Mt | Landline | |
| Bozeman | Qwest Corporation | Landline | |
| Clinton | Blackfoot Telephone Cooperative, Inc. | Landline | |
| Molt | Triangle Telephone Cooperative Assn., Inc. | Landline | |
| Frannie | Tct West, Inc. | Landline | |
| Billings | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Townsend | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Missoula | Qwest Corporation | Landline | |
| Whitefish | Bresnan Broadband of Montana, Llc - Mt | Landline | |
| Bigfork | Centurytel of Montana, Inc. Dba Centurylink | Landline | |
| Saint Regis | New Cingular Wireless Pcs, Llc | Wireless | |
| Kalispell | Centurytel of Montana, Inc. Dba Centurylink | Landline | |
| Billings | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Whitefish | Centurytel of Montana, Inc. Dba Centurylink | Landline | |
| Miles City | Cable & Communications Corporation | Wireless | |
| Lincoln | Lincoln Telephone Company, Inc. | Landline | |
| Bozeman | At&t Local | Landline | |
| Conrad | New Cingular Wireless Pcs, Llc | Landline | |
| Fairview | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Missoula | Sprint Spectrum L.p.- Mt | Wireless | |
| Hardin | Qwest Corporation | Landline | |
| Scobey | Nemont Telephone Cooperative, Inc. | Landline | |
| Clancy | Qwest Corporation | Landline | |
| Wolf Point | Nemont Telephone Cooperative, Inc. | Landline | |
| Libby | Citizens Telecom Co of Mt-frontier Comm of Mt | Landline | |
| Bozeman | Qwest Corporation | Landline | |
| Sidney | Cable & Communications Corporation | Wireless | |
| Kalispell | Centurytel of Montana, Inc. Dba Centurylink | Landline | |
| Billings | Qwest Corporation | Landline | |
| Conrad | 3 Rivers Telephone Cooperative, Inc. - Mt | Landline | |
| Bozeman | New Cingular Wireless Pcs, Llc | Landline | |
| Billings | One Eighty Communications, Inc. - Mt | Landline | |
| Cut Bank | Qwest Corporation | Landline | |
| Terry | Cable & Communications Corporation | Wireless | |
| Ekalaka | Cable & Communications Corporation | Wireless | |
| Helena | Qwest Corporation | Landline | |
| Miles City | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Big Timber | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Havre | New Cingular Wireless Pcs, Llc | Wireless | |
| Bozeman | Qwest Corporation | Landline | |
| Bozeman | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Billings | Cellco Partnership Dba Verizon Wireless - Mt | Landline | |
| Laurel | Level 3 Communications, Llc - Mt | Landline | |
| Billings | Qwest Corporation | Landline | |
| Missoula | Qwest Corporation | Landline | |
| Havre | Qwest Corporation | Landline | |
| Glendive | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Bozeman | Qwest Corporation | Landline | |
| Billings | Level 3 Communications, Llc - Mt | Landline | |
| Kalispell | New Cingular Wireless Pcs, Llc | Wireless | |
| Hamilton | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Missoula | Blackfoot Communications, Inc. - Mt | Landline | |
| Kevin | Mtpcs, Llc | Wireless | |
| Havre | New Cingular Wireless Pcs, Llc | Wireless | |
| Butte | Qwest Corporation | Landline | |
| Havre | Cellco Partnership Dba Verizon Wireless - Mt | Landline | |
| Dillon | Level 3 Communications, Llc - Mt | Landline | |
| Polson | Bresnan Broadband of Montana, Llc - Mt | Landline | |
| Great Falls | Qwest Corporation | Landline | |
| Lame Deer | Range Telephone Cooperative, Inc. | Landline | |
| Glendive | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Missoula | Sprint Spectrum L.p.- Mt | Wireless | |
| Seeley Lake | Blackfoot Telephone Cooperative, Inc. | Landline | |
| Polson | Bresnan Broadband of Montana, Llc - Mt | Landline | |
| Divide | Southern Montana Telephone Co. | Landline | |
| Nashua | Nemont Telephone Cooperative, Inc. | Landline | |
| Havre | Triangle Telephone Cooperative Assn., Inc. | Landline | |
| Fairview | Qwest Corporation | Landline | |
| Havre | Mtpcs, Llc | Wireless | |
| Miles City | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Butte | Level 3 Communications, Llc - Mt | Landline | |
| Highwood | 3 Rivers Telephone Cooperative, Inc. | Landline | |
| Billings | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Lewistown | Level 3 Communications, Llc - Mt | Landline | |
| Wolf Point | Sagebrush Cellular, Inc. | Landline | |
| Billings | Mid-rivers Telephone Cooperative, Inc. | Landline | |
| Baker | Cable & Communications Corporation | Wireless | |
| Plevna | Cable & Communications Corporation | Wireless | |
| Bozeman | 360networks (usa) Inc. - Mt | Landline | |
| Missoula | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Red Lodge | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Conrad | New Cingular Wireless Pcs, Llc | Wireless | |
| Hamilton | Qwest Corporation | Landline | |
| Billings | Cellco Partnership Dba Verizon Wireless - Mt | Wireless | |
| Helena | Bresnan Broadband of Montana, Llc - Mt | Landline | |
| Alberton | Blackfoot Telephone Cooperative, Inc. | Landline |