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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
406-583 BLOOMFIELD, MT MID-RIVERS TELEPHONE COOPERATIVE, INC.
406-584 LINDSAY, MT MID-RIVERS TELEPHONE COOPERATIVE, INC.
406-585 BOZEMAN, MT QWEST CORPORATION
406-586 BOZEMAN, MT QWEST CORPORATION
406-587 BOZEMAN, MT QWEST CORPORATION
406-588 CARLYLE, MT MID-RIVERS TELEPHONE COOPERATIVE, INC.
406-589 BOZEMAN, MT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT
406-590 Great Falls, MT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT
406-591 BILLINGS, MT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT
406-592 BUSBY, MT RANGE TELEPHONE COOPERATIVE, INC.
406-593 BUTTE, MT NEW CINGULAR WIRELESS PCS, LLC
406-594 HELENA, MT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT
406-595 BOZEMAN, MT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT
406-596 DILLON, MT NEW CINGULAR WIRELESS PCS, LLC
406-597 SHELBY, MT NEW CINGULAR WIRELESS PCS, LLC
406-598 BILLINGS, MT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT
406-599 BOZEMAN, MT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT
406-600 BOZEMAN, MT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT
406-601 BILLINGS, MT BLACKFOOT COMMUNICATIONS, INC. - MT
406-602 BOZEMAN, MT BLACKFOOT COMMUNICATIONS, INC. - MT
406-603 HELENA, MT BLACKFOOT COMMUNICATIONS, INC. - MT
406-604 Great Falls, MT BLACKFOOT COMMUNICATIONS, INC. - MT
406-606 BILLINGS, MT TRI TEL, INC. - MT
406-607 KALISPELL, MT BLACKFOOT COMMUNICATIONS, INC. - MT
406-612 SWAN LAKE, MT ONVOY, LLC - MT
406-615 THOMPSNFLS, MT WESTERN MONTANA COMMUNITYTEL INC. - MT
406-616 THREEFORKS, MT ONVOY, LLC - MT
406-620 BILLINGS, MT SAGEBRUSH CELLULAR, INC.
406-621 FORTBENTON, MT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT
406-622 FORTBENTON, MT CENTRAL MONTANA COMMUNICATIONS, INC.
406-623 HARDIN, MT LEVEL 3 COMMUNICATIONS, LLC - MT
406-624 BOZEMAN, MT MONTANA OPTICOM, LLC - MT
406-625 Stevensville, MT BRESNAN BROADBAND OF MONTANA, LLC - MT (CHARTER)
406-626 FRENCHTOWN, MT QWEST CORPORATION
406-627 EASTCONRAD, MT 3 RIVERS TELEPHONE COOPERATIVE, INC.
406-628 LAUREL, MT QWEST CORPORATION
406-629 HARDIN, MT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT
406-630 SIDNEY, MT LEVEL 3 COMMUNICATIONS, LLC - MT
406-631 ELMO, MT ONVOY, LLC - MT
406-632 HARLOWTON, MT CENTRAL MONTANA COMMUNICATIONS, INC.
406-633 LAUREL, MT QWEST CORPORATION
406-634 HELENA, MT AT&T LOCAL
406-635 TERRY, MT MID-RIVERS TELEPHONE COOPERATIVE, INC.
406-636 LAVINA, MT MID-RIVERS TELEPHONE COOPERATIVE, INC.
406-637 TERRY, MT QWEST CORPORATION
406-638 HARDIN, MT PROJECT TELEPHONE CO., INC.
406-639 LODGEGRASS, MT PROJECT TELEPHONE CO., INC.
406-640 WYELLOWSTN, MT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT
406-641 WYELLOWSTN, MT CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT
406-642 VICTOR, 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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