406 Area Code
The 406 area code is a telephone area code serving the entire U.S. state of Montana.
Federal Data
State Data
County Data
City Data
The 406 area code is a telephone area code serving the entire U.S. state of Montana.
Federal Data
State Data
County Data
City Data
The 406 area code has been Montana's only area code since the American Telephone and Telegraph Company created a nationwide telephone numbering plan in 1947. Phone numbers with this area code originate from communities throughout the Montana numbering plan area.
Area code 406 is a general purpose code which was placed in service on January 1, 1947.
Our Montana phone number lookup service will analyze the three-digit prefix of any 406 area code phone number and will show which telecommunications company and rate center it was initially assigned to. This prefix code data may help to determine the U.S. carrier, Montana geographic region, and local calling area associated with the phone number.
Phone numbers follow the following structure under the North American Numbering Plan:
Understanding the area code can help you determine if a call is local to your area. However, keep in mind that due to mobile number portability and VoIP services, the caller may be anywhere in the United States, so it’s best to search for the most recent phone number details.
| Company | Number of Prefixes |
|---|---|
| QWEST CORPORATION | 126 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT | 80 |
| NEW CINGULAR WIRELESS PCS, LLC | 40 |
| TRIANGLE TEL. COOP. ASSN., INC. | 38 |
| 3 RIVERS TEL. COOP., INC. | 26 |
| MID-RIVERS TEL. COOP., INC. | 24 |
| NEMONT TEL COOP INC | 22 |
| BRESNAN BROADBAND OF MONTANA, LLC - MT [CHARTER] | 19 |
| CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK | 19 |
| BLACKFOOT TEL. COOP., INC. | 18 |
| RANGE TEL COOP INC | 12 |
| MID-RIVERS TELEPHONE COOPERATIVE, INC. | 9 |
| PROJECT TEL. CO., INC. | 9 |
| LEVEL 3 COMMUNICATIONS, LLC - MT | 8 |
| ONVOY, LLC - MT | 8 |
| ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | 5 |
| SOUTHERN MONTANA TEL. CO. | 5 |
| BLACKFOOT COMMUNICATIONS, INC. - MT | 4 |
| T-MOBILE USA, INC. | 4 |
| ZIPLY FIBER MONTANA, LLC DBA ZIPLY FIBER | 4 |
| 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT | 3 |
| AT&T - LOCAL | 3 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 3 |
| NORTHERN TEL. COOP., INC. | 3 |
| RONAN TEL. CO. | 3 |
| SAGEBRUSH CELLULAR, INC. | 3 |
| INTERBEL TEL. COOP., INC. | 2 |
| LINCOLN TEL. CO., INC. | 2 |
| MONTANA OPTICOM, LLC - MT | 2 |
| SKYE TELECOM LLC DBA SKYETEL | 2 |
| TELEPORT COMMUNICATIONS AMERICA MT - LLC | 2 |
| AIRUS, INC. - MT | 1 |
| BANDWIDTH.COM CLEC, LLC - MT | 1 |
| HOT SPRINGS TEL. CO. | 1 |
| INTERBEL TELEPHONE COOPERATIVE, INC. - MT | 1 |
| NUSO, LLC | 1 |
| RANGE TELEPHONE COOPERATIVE, INC. - MT | 1 |
| RT COMMUNICATIONS | 1 |
| SIYEH COMMUNICATIONS | 1 |
| TELNYX LLC | 1 |
| TRIANGLE COMMUNICATION SYSTEM, INC. | 1 |
| WESTERN MONTANA COMMUNITYTEL INC. - MT | 1 |
Carrier names have been updated from their original FCC assignments to reflect current companies following mergers, acquisitions, and rebranding. Updates were determined using AI-assisted research and may not be accurate or reflect up to date changes. This data is provided without warranties of accuracy or completeness.
| Rate Center | Number of Prefixes |
|---|---|
| BILLINGS | 48 |
| MISSOULA | 39 |
| HELENA | 28 |
| BOZEMAN | 27 |
| GREATFALLS | 27 |
| KALISPELL | 21 |
| BUTTE | 15 |
| HAMILTON | 8 |
| MILES CITY | 8 |
| LIVINGSTON | 6 |
| SIDNEY | 6 |
| LEWISTOWN | 5 |
| COLSTRIP | 4 |
| HARDIN | 4 |
| HAVRE | 4 |
| RED LODGE | 4 |
| SHELBY | 4 |
| TOWNSEND | 4 |
| ANACONDA | 3 |
| BELGRADE | 3 |
| BIG SKY | 3 |
| CONRAD | 3 |
| DILLON | 3 |
| EUREKARURL | 3 |
| GLASGOW | 3 |
| GLENDIVE | 3 |
| LAUREL | 3 |
| LIBBY | 3 |
| SEELEYLAKE | 3 |
| WHITEFISH | 3 |
| WYELLOWSTN | 3 |
| BAKER | 2 |
| BIGFORK | 2 |
| COLUMBIFLS | 2 |
| COLUMBUS | 2 |
| CUT BANK | 2 |
| DEER LODGE | 2 |
| FAIRVIEW | 2 |
| FORSYTH | 2 |
| MANHATTAN | 2 |
| NORTHHAVRE | 2 |
| PABLO | 2 |
| ROUNDUP | 2 |
| SOMERS | 2 |
| SOUTHHAVRE | 2 |
| STEVENSVL | 2 |
| STIGNATIUS | 2 |
| SUPERIOR | 2 |
| TERRY | 2 |
| THREEFORKS | 2 |
| W GLENDIVE | 2 |
| WIBAUX | 2 |
| ABSAROKEE | 1 |
| ALBERTON | 1 |
| ALZADA | 1 |
| ARLEE | 1 |
| ASHLAND | 1 |
| AUGUSTA | 1 |
| AVON | 1 |
| BAINVILLE | 1 |
| BELFRY | 1 |
| BELT | 1 |
| BIG SANDY | 1 |
| BIG TIMBER | 1 |
| BIRNEY | 1 |
| BLOOMFIELD | 1 |
| BOULDER | 1 |
| BOX ELDER | 1 |
| BRADY | 1 |
| BRIDGER | 1 |
| BROADUS | 1 |
| BROADVIEW | 1 |
| BROCKTON | 1 |
| BROWNING | 1 |
| BUSBY | 1 |
| CANYON CRK | 1 |
| CARTER | 1 |
| CASCADE | 1 |
| CHARLO | 1 |
| CHESTER | 1 |
| CHINOOK | 1 |
| CHOTEAU | 1 |
| CIRCLE | 1 |
| CLINTON | 1 |
| CLYDE PARK | 1 |
| CONDON | 1 |
| CULBERTSON | 1 |
| CUSTER | 1 |
| DAGMAR | 1 |
| DARBY | 1 |
| DECKER | 1 |
| DENTON | 1 |
| DEVON | 1 |
| DIVIDE | 1 |
| DIXON | 1 |
| DODSON | 1 |
| DRUMMOND | 1 |
| DUPUYER | 1 |
| DUTTON | 1 |
| EASTCONRAD | 1 |
| EGLACIERPK | 1 |
| EKALAKA | 1 |
| ELMO | 1 |
| ENNIS | 1 |
| EUREKA | 1 |
| FAIRFIELD | 1 |
| FLAXVILLE | 1 |
| FORT PECK | 1 |
| FORT SHAW | 1 |
| FORT SMITH | 1 |
| FORTBENTON | 1 |
| FRAZER | 1 |
| FRENCHTOWN | 1 |
| FROID | 1 |
| FROMBERG | 1 |
| GALATNGTWY | 1 |
| GARDINER | 1 |
| GERALDINE | 1 |
| GEYSER | 1 |
| GILDFORD | 1 |
| GRANT | 1 |
| GRASSRANGE | 1 |
| HARLEM | 1 |
| HARLOWTON | 1 |
| HARRISON | 1 |
| HAYS | 1 |
| HIGHWOOD | 1 |
| HINSDALE | 1 |
| HOBSON | 1 |
| HOPPILLIAD | 1 |
| HOTSPRINGS | 1 |
| HUNGRYHORS | 1 |
| HUNTLEY | 1 |
| HYSHAM | 1 |
| JACKSON | 1 |
| JOLIET | 1 |
| JOPLIN | 1 |
| JORDAN | 1 |
| JUDITH GAP | 1 |
| KREMLIN | 1 |
| LAKESIDE | 1 |
| LAMBERT | 1 |
| LAME DEER | 1 |
| LAVINA | 1 |
| LIMA | 1 |
| LINCOLN | 1 |
| LINDSAY | 1 |
| LODGEGRASS | 1 |
| LOMA | 1 |
| MALTA | 1 |
| MARION | 1 |
| MARTINSDL | 1 |
| MEDICINELK | 1 |
| MELROSE | 1 |
| MELSTONE | 1 |
| MELVILLE | 1 |
| MOLT | 1 |
| MOORE | 1 |
| MUSSELSHLL | 1 |
| NASHUA | 1 |
| NEIHART | 1 |
| NO BROADUS | 1 |
| NO WOLF PT | 1 |
| NOCUT BANK | 1 |
| NOXON | 1 |
| OPHEIM | 1 |
| OUTLOOK | 1 |
| OVANDO | 1 |
| PEERLESS | 1 |
| PENDROY | 1 |
| PHILIPSBG | 1 |
| PLAINS | 1 |
| PLENTYWOOD | 1 |
| PLEVNA | 1 |
| POLSON | 1 |
| POMPESPLLR | 1 |
| POPLAR | 1 |
| POTOMAC | 1 |
| POWER | 1 |
| RAPELJE | 1 |
| RAYNESFORD | 1 |
| REEDPOINT | 1 |
| RICHEY | 1 |
| RIDGE | 1 |
| ROCK SPG | 1 |
| RONAN | 1 |
| ROSEBUD | 1 |
| ROY | 1 |
| RUDYARD | 1 |
| RYEGATE | 1 |
| SACO | 1 |
| SAVAGE | 1 |
| SCOBEY | 1 |
| SHERIDAN | 1 |
| SO BROADUS | 1 |
| SO CHESTER | 1 |
| SO WOLF PT | 1 |
| SOMILES CY | 1 |
| SOUTHMALTA | 1 |
| ST REGIS | 1 |
| STANFORD | 1 |
| STOCKETT | 1 |
| SUNBURST | 1 |
| SWAN LAKE | 1 |
| THOMPSNFLS | 1 |
| TROY | 1 |
| TURNER | 1 |
| TWINBRIDGS | 1 |
| VALIER | 1 |
| VICTOR | 1 |
| VIRGINIACY | 1 |
| W GLACIER | 1 |
| WARM SPG | 1 |
| WESTBY | 1 |
| WESTSIDNEY | 1 |
| WHITEHALL | 1 |
| WHITEWATER | 1 |
| WHSLPHRSPG | 1 |
| WILSALL | 1 |
| WINIFRED | 1 |
| WINNETT | 1 |
| WISDOM | 1 |
| WISE RIVER | 1 |
| WOLF CREEK | 1 |
| WOLF POINT | 1 |
| WORDEN | 1 |
| WYOLA | 1 |
| YELLOW BAY | 1 |