Local Calling Guide

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NPA: 406 [Rate centres in NPA 406] [Dial plan for NPA 406]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-497 6 Butte MT BUTTMT09DS0  9636 QWEST CORPORATION 648      
406-497 7 Butte MT BUTTMT09DS0  9636 QWEST CORPORATION 648      
406-497 8 Butte MT BUTTMT09DS0  9636 QWEST CORPORATION 648      
406-497 9 Butte MT BUTTMT09DS0  9636 QWEST CORPORATION 648      
406-498 A Butte MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-499 A Seeley Lake MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-499 0 Seeley Lake MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-499 1 Seeley Lake MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2014-11-02   
406-499 2 Seeley Lake MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2012-07-08   
406-499 3 Seeley Lake MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2022-12-13   
406-499 4 Seeley Lake MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2019-07-02   
406-499 5 Seeley Lake MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2023-07-28   
406-499 6 Seeley Lake MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2019-08-10   
406-499 7 Seeley Lake MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2023-12-11   
406-499 8 Seeley Lake MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2017-07-24   
406-499 9 Seeley Lake MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2021-06-12   
406-500 A Billings MT BLNGMT938MD  965H FRACTEL, LLC 650      
406-500 0 Billings MT BLNGMT938MD  965H FRACTEL, LLC 650   2019-03-30   
406-500 1 Billings MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2021-05-24   
406-500 2 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2019-11-18   
406-500 3 Billings MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2019-08-23   
406-500 4 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2019-10-28   
406-500 5 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2019-10-28   
406-500 6 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2019-11-18   
406-500 7 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2019-11-18   
406-500 8 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2019-11-18   
406-500 9 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2019-11-18   
406-501 A Whitehall MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-501 0 Whitehall MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2020-04-04   
406-501 1 Whitehall MT GRFLMTMAHMD  073H TELNYX LLC 648   2020-08-13   
406-501 2 Whitehall MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2020-10-31   
406-501 3 Whitehall MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2020-11-08   
406-501 4 Whitehall MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-10-20   
406-501 5 Whitehall MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-10-20   
406-501 6 Whitehall MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2020-01-03   
406-501 7 Whitehall MT MSSLMTMAYMD  771G TELEPORT COMMUNICATIONS AMERICA MT - LLC 648   2020-08-24   
406-501 8 Whitehall MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-02-11   
406-501 9 Whitehall MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-02-11   
406-502 A Helena MT HLNAMTHH5MD  792K CHARTER IP ENABLED SERVICES, LLC 648      
406-502 1 Helena MT HLNAMTHH5MD  792K CHARTER IP ENABLED SERVICES, LLC 648   2012-06-01   
406-502 2 Helena MT HLNAMTHH5MD  792K CHARTER IP ENABLED SERVICES, LLC 648   2014-04-30   
406-502 8 Helena MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2023-12-13   
406-503 A Billings MT BLNGMTWELMD  318J COMCAST IP PHONE, LLC 650      
406-503 0 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2023-08-20   
406-503 1 Billings MT BLNGMTWELMD  318J COMCAST IP PHONE, LLC 650   2023-06-04   
406-503 2 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2024-01-26   
406-503 3 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2024-02-09   
406-503 4 Billings MT BLNGMTMAXMD  5562 METROPCS, INC. 650   2023-09-24   
406-503 5 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2024-02-09   
406-503 6 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2024-02-09   
406-503 7 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2024-02-09   
406-503 8 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2023-08-20   
406-503 9 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2023-08-20   
406-504 A Fairfield MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-504 2 Fairfield MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2021-05-19   
406-505 A Conrad MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-505 0 Conrad MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648   2010-11-28   
406-505 1 Conrad MT GRFLMTMAHMD  073H TELNYX LLC 648   2020-08-07   
406-505 2 Conrad MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-02-11   
406-505 3 Conrad MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-02-11   
406-505 4 Conrad MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-09-15   
406-505 5 Conrad MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-10-28   
406-505 6 Conrad MT HLNAMTMAUMD  508J CENTURYLINK COMMUNICATIONS, LLC 648   2014-05-24   
406-505 7 Conrad MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2011-10-21   
406-505 8 Conrad MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2021-07-18   
406-505 9 Conrad MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2021-11-14   
406-506 A Billings MT BLNGMT93BMD  321J HD CARRIER LLC 650      
406-506 0 Billings MT BLNGMT93BMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2022-10-07   
406-506 1 Billings MT BLNGMT93BMD  321J HD CARRIER LLC 650   2020-11-01   
406-506 2 Billings MT BLNGMT93BMD  321J HD CARRIER LLC 650   2020-11-01   
406-506 3 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2021-07-05   
406-506 4 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2020-10-05   
406-506 5 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2020-10-05   
406-506 6 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2020-10-05   
406-506 7 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2021-07-05   
406-506 8 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2020-09-03   
406-506 9 Billings MT BLNGMT93BMD  321J HD CARRIER LLC 650   2020-07-23   
406-507 A Whitefish MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-507 0 Whitefish MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2024-04-14   
406-507 1 Whitefish MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2023-04-21   
406-508 A Frenchtown MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-508 0 Frenchtown MT GRFLMTMAHMD  073H TELNYX LLC 648   2020-08-13   
406-508 1 Frenchtown MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2012-12-24   
406-508 2 Frenchtown MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2012-04-01   
406-508 3 Frenchtown MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-03-07   
406-508 4 Frenchtown MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-03-07   
406-508 5 Frenchtown MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-09-15   
406-508 6 Frenchtown MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2020-11-08   
406-508 7 Frenchtown MT HLNAMTMAUMD  508J CENTURYLINK COMMUNICATIONS, LLC 648   2014-05-24   
406-508 8 Frenchtown MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-07-05   
406-508 9 Frenchtown MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-07-05   
406-510 A Missoula MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-510 0 Missoula MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2017-04-21   
406-510 1 Missoula MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2017-04-21   
406-510 2 Missoula MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2017-04-21   
406-510 3 Missoula MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2017-04-21   
406-510 4 Missoula MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2017-04-21   
406-510 5 Missoula MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2017-04-21   
406-510 6 Missoula MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2017-04-21   
406-510 7 Missoula MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2017-04-21   

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Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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