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(406)
Enter 7-digit phone number for area code 406 or the complete 10-digit phone number

Phone Prefixes for Area Code 406

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Area code location Company / Service Provider
406-938 ALZADA, MT CABLE & CELLULAR COMMUNICATIONS, LLC
406-939 W GLENDIVE, MT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT
406-941 W GLENDIVE, MT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT
406-942 GLASGOW, MT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT
406-943 SIDNEY, MT LEVEL 3 COMMUNICATIONS, LLC - MT
406-944 MILES CITY, MT LEVEL 3 COMMUNICATIONS, LLC - MT
406-945 HAVRE, MT NEW CINGULAR WIRELESS PCS, LLC
406-946 LIVINGSTON, MT LEVEL 3 COMMUNICATIONS, LLC - MT
406-947 MUSSELSHLL, MT MID-RIVERS TELEPHONE COOPERATIVE, INC.
406-948 GLENDIVE, MT LEVEL 3 COMMUNICATIONS, LLC - MT
406-949 TOWNSEND, MT NEW CINGULAR WIRELESS PCS, LLC
406-951 MILES CITY, MT NEW CINGULAR WIRELESS PCS, LLC
406-952 Great Falls, MT BRESNAN BROADBAND OF MONTANA, LLC - MT (CHARTER)
406-953 HARDIN, MT LEVEL 3 COMMUNICATIONS, LLC - MT
406-954 ROY, MT CABLE & CELLULAR COMMUNICATIONS, LLC
406-956 BAKER, MT NEW CINGULAR WIRELESS PCS, LLC
406-957 TERRY, MT CABLE & CELLULAR COMMUNICATIONS, LLC
406-960 DILLON, MT LEVEL 3 COMMUNICATIONS, LLC - MT
406-961 HAMILTON, MT QWEST CORPORATION
406-962 JOLIET, MT QWEST CORPORATION
406-963 FROIDRURAL, MT NEMONT TELEPHONE COOPERATIVE, INC.
406-964 Great Falls, MT QWEST CORPORATION
406-965 Great Falls, MT QWEST CORPORATION
406-966 SHELBY, MT LEVEL 3 COMMUNICATIONS, LLC - MT
406-967 WORDEN, MT PROJECT TELEPHONE CO., INC.
406-968 LEWISTOWN, MT LEVEL 3 COMMUNICATIONS, LLC - MT
406-969 BILLINGS, MT BRESNAN BROADBAND OF MONTANA, LLC - MT (CHARTER)
406-970 BILLINGS, MT CENTURYLINK COMMUNICATIONS LLC
406-971 PLEVNA, MT CABLE & CELLULAR COMMUNICATIONS, LLC
406-972 WCAMPCROOK, MT WEST RIVER COOPERATIVE TELEPHONE COMPANY
406-973 SIDNEY, MT CABLE & CELLULAR COMMUNICATIONS, LLC
406-974 CIRCLE, MT CABLE & CELLULAR COMMUNICATIONS, LLC
406-975 EKALAKA, MT CABLE & CELLULAR COMMUNICATIONS, LLC
406-977 JORDAN, MT CABLE & CELLULAR COMMUNICATIONS, LLC
406-978 BAKER, MT CABLE & CELLULAR COMMUNICATIONS, LLC
406-979 RICHEY, MT CABLE & CELLULAR COMMUNICATIONS, LLC
406-980 TOWNSEND, MT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT
406-981 South Miles City, MT CABLE & CELLULAR COMMUNICATIONS, LLC
406-982 YELLOW BAY, MT CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK
406-983 ASHLAND, MT CABLE & CELLULAR COMMUNICATIONS, LLC
406-984 BIRNEY, MT RANGE TELEPHONE COOPERATIVE, INC.
406-987 GLENDIVE, MT CABLE & CELLULAR COMMUNICATIONS, LLC
406-988 DILLON, MT LEVEL 3 COMMUNICATIONS, LLC - MT
406-989 W GLENDIVE, MT NEW CINGULAR WIRELESS PCS, LLC
406-991 MARION, MT ONVOY, LLC - MT
406-992 HELENA, MT YMAX COMMUNICATIONS CORP. - MT
406-993 BIG SKY, MT 3 RIVERS TELEPHONE COOPERATIVE, INC.
406-994 BOZEMAN, MT QWEST CORPORATION
406-995 BIG SKY, MT 3 RIVERS TELEPHONE COOPERATIVE, INC.
406-996 HELENA, MT BRESNAN BROADBAND OF MONTANA, LLC - MT (CHARTER)
New numbers being added to 406 area code
Effective: 06/18/2017
406-400 in HAVRE, MT
TRIANGLE COMMUNICATION SYSTEM, INC. - MT
Effective: 06/21/2017
406-412 in BILLINGS, MT
NEUTRAL TANDEM-MONTANA, LLC - MT
406 Area Code Information
Type of code: General Purpose Code
location: MT - US
Time zone: M
Assigned for use: Yes
Code in service: Yes
Service date: January 01, 1947
In jeopardy: No
Relief in progress: No
NPA Relief status:
Code assignable: Yes
Geographic or
non-geographic:
G
Reserved for future use: No
Planning letter(s):
Overlay code: No
Overlay complex:
Dialing plan Standard Permissive
Home local calls: 7D NA
Foreign local calls: 7D NA
Home toll calls: 1+10D NA
Foreign toll calls: 1+10D -
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