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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
406-357 CHINOOK, MT TRIANGLE TELEPHONE COOPERATIVE ASSN., INC.
406-358 MELSTONE, MT MID-RIVERS TELEPHONE COOPERATIVE, INC.
406-359 GLENDIVE, MT QWEST CORPORATION
406-360 HAMILTON, MT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT
406-361 HAMILTON, MT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT
406-362 LINCOLN, MT LINCOLN TELEPHONE COMPANY, INC.
406-363 HAMILTON, MT QWEST CORPORATION
406-364 HINSDALE, MT NEMONT TELEPHONE COOPERATIVE, INC.
406-365 GLENDIVE, MT QWEST CORPORATION
406-366 LEWISTOWN, MT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT
406-367 NO GLASGOW, MT NEMONT TELEPHONE COOPERATIVE, INC.
406-368 CANYON CRK, MT LINCOLN TELEPHONE COMPANY, INC.
406-369 HAMILTON, MT NEW CINGULAR WIRELESS PCS, LLC
406-370 MISSOULA, MT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT
406-371 BILLINGS, MT MCIMETRO ACCESS TRANSMISSION SERVICES LLC
406-372 KREMLIN, MT TRIANGLE TELEPHONE COOPERATIVE ASSN., INC.
406-373 BILLINGS, MT QWEST CORPORATION
406-374 MOORE, MT CENTRAL MONTANA COMMUNICATIONS, INC.
406-375 HAMILTON, MT QWEST CORPORATION
406-376 GILDFORD, MT TRIANGLE TELEPHONE COOPERATIVE ASSN., INC.
406-377 GLENDIVE, MT MID-RIVERS TELEPHONE COOPERATIVE, INC.
406-378 BIG SANDY, MT TRIANGLE TELEPHONE COOPERATIVE ASSN., INC.
406-379 TURNER, MT TRIANGLE TELEPHONE COOPERATIVE ASSN., INC.
406-380 LEWISTOWN, MT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT
406-381 HAMILTON, MT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT
406-382 SUPERIOR, MT NEW CINGULAR WIRELESS PCS, LLC
406-383 DODSON, MT CENTRAL MONTANA COMMUNICATIONS, INC.
406-384 BILLINGS, MT ONE EIGHTY COMMUNICATIONS, INC. - MT
406-385 WESTBY, MT NEMONT TELEPHONE COOPERATIVE, INC.
406-386 HOPPILLIAD, MT TRIANGLE TELEPHONE COOPERATIVE ASSN., INC.
406-387 HUNGRYHORS, MT CENTURYTEL OF MONTANA, INC. DBA CENTURYLINK
406-388 BELGRADE, MT QWEST CORPORATION
406-389 HELENA, MT CENTURYLINK COMMUNICATIONS LLC
406-390 SOUTHHAVRE, MT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT
406-391 CUT BANK, MT NEW CINGULAR WIRELESS PCS, LLC
406-392 NO WOLF PT, MT NEMONT TELEPHONE COOPERATIVE, INC.
406-393 SOMERS, MT BRESNAN BROADBAND OF MONTANA, LLC - MT (CHARTER)
406-394 NORTHHAVRE, MT TRIANGLE TELEPHONE COOPERATIVE ASSN., INC.
406-395 SOUTHHAVRE, MT TRIANGLE TELEPHONE COOPERATIVE ASSN., INC.
406-396 MISSOULA, MT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT
406-397 HINGHAM, MT TRIANGLE TELEPHONE COOPERATIVE ASSN., INC.
406-398 NORTHHAVRE, MT TRIANGLE TELEPHONE COOPERATIVE ASSN., INC.
406-399 SOUTHHAVRE, MT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT
406-400 HAVRE, MT TRIANGLE COMMUNICATION SYSTEM, INC. - MT
406-403 Great Falls, MT ONVOY, LLC - MT
406-404 BOZEMAN, MT BRESNAN BROADBAND OF MONTANA, LLC - MT (CHARTER)
406-407 KALISPELL, MT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT
406-410 HELENA, MT SPRINT SPECTRUM L.P.- MT
406-412 BILLINGS, MT NEUTRAL TANDEM-MONTANA, LLC - MT
406-413 BILLINGS, MT QWEST CORPORATION
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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