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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
406-593 7 Butte MT HLNAMTMAWMD  6529 T-MOBILE USA, INC. 648   2024-10-24   
406-593 8 Butte MT HLNAMTMAWMD  6529 T-MOBILE USA, INC. 648   2024-12-26   
406-593 9 Butte MT   6529 T-MOBILE USA, INC. 648   2025-01-17   
406-594 A Helena MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-595 A Bozeman MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-596 A Dillon MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-596 0 Dillon MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-596 1 Dillon MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-596 2 Dillon MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-596 5 Dillon MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-597 A Shelby MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-597 6 Shelby MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-09-15   
406-597 8 Shelby MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2023-06-02   
406-598 A Billings MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-599 A Bozeman MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-600 A Bozeman MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-601 A Billings MT BLNGMTASHMD  7870 BLACKFOOT COMMUNICATIONS, INC. - MT 650      
406-601 0 Billings MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2021-06-21   
406-601 1 Billings MT BLNGMT93HMD  792K CHARTER IP ENABLED SERVICES, LLC 650   2016-11-24   
406-601 2 Billings MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650   2023-04-06   
406-601 3 Billings MT BLNGMT93DS0  588H AIRUS, INC. - MT 650   2017-07-27   
406-601 4 Billings MT BLNGMTASHMD  7870 BLACKFOOT COMMUNICATIONS, INC. - MT 650   2013-12-30   
406-601 5 Billings MT BLNGMTWE8MD  508J CENTURYLINK COMMUNICATIONS, LLC 650   2017-11-30   
406-601 6 Billings MT BLNGMTWE8MD  508J CENTURYLINK COMMUNICATIONS, LLC 650   2017-11-30   
406-601 7 Billings MT BLNGMTWE8MD  508J CENTURYLINK COMMUNICATIONS, LLC 650   2017-11-30   
406-601 8 Billings MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2022-11-04   
406-601 9 Billings MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2021-07-26   
406-602 A Bozeman MT BZMNMTMA2MD  7870 BLACKFOOT COMMUNICATIONS, INC. - MT 650      
406-602 0 Bozeman MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2019-07-08   
406-602 1 Bozeman MT BLNGMT93DS0  588H AIRUS, INC. - MT 650   2020-03-27   
406-602 2 Bozeman MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2020-08-09   
406-602 3 Bozeman MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2020-08-09   
406-602 4 Bozeman MT BZMNMTMA2MD  7870 BLACKFOOT COMMUNICATIONS, INC. - MT 650   2013-12-30   
406-602 5 Bozeman MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2020-08-09   
406-602 6 Bozeman MT BLNGMTWEBMD  771G TELEPORT COMMUNICATIONS AMERICA MT - LLC 650   2017-06-27   
406-602 7 Bozeman MT BZMNMTEF2MD  792K CHARTER IP ENABLED SERVICES, LLC 650   2021-06-23   
406-602 8 Bozeman MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2020-08-08   
406-602 9 Bozeman MT BLNGMT93DS0  588H AIRUS, INC. - MT 650   2021-04-19   
406-603 A Helena MT HLNAMTHO3MD  7870 BLACKFOOT COMMUNICATIONS, INC. - MT 648      
406-603 0 Helena MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2014-07-12   
406-603 4 Helena MT HLNAMTHO3MD  7870 BLACKFOOT COMMUNICATIONS, INC. - MT 648   2013-12-30   
406-604 A Great Falls MT GRFLMTMARS0  7870 BLACKFOOT COMMUNICATIONS, INC. - MT 648      
406-604 0 Great Falls MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-01-22   
406-604 1 Great Falls MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-01-22   
406-604 2 Great Falls MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2021-05-22   
406-604 3 Great Falls MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2021-05-22   
406-604 4 Great Falls MT GRFLMTMARS0  7870 BLACKFOOT COMMUNICATIONS, INC. - MT 648   2011-09-11   
406-604 5 Great Falls MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2021-05-22   
406-604 6 Great Falls MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2021-05-22   
406-604 7 Great Falls MT HLNAMTMAUMD  508J CENTURYLINK COMMUNICATIONS, LLC 648   2016-02-11   
406-604 8 Great Falls MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-01-22   
406-604 9 Great Falls MT GRFLMTMAHMD  073H TELNYX LLC 648   2023-08-25   
406-605 A Butte MT MSSLMTMAEMD  073H TELNYX LLC 648      
406-605 0 Butte MT MSSLMTMAEMD  073H TELNYX LLC 648   2021-06-09   
406-605 1 Butte MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2023-11-27   
406-605 2 Butte MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2023-11-27   
406-605 3 Butte MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2024-04-06   
406-605 4 Butte MT GRFLMTMA69Z  490J DISH WIRELESS, LLC 648   2023-12-18   
406-605 5 Butte MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2021-10-30   
406-605 6 Butte MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2021-10-30   
406-605 7 Butte MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2021-10-30   
406-605 8 Butte MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2021-10-30   
406-605 9 Butte MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2023-11-27   
406-606 A Billings MT BLNGMTMATMD  935G TRI TEL, INC. - MT 650      
406-606 0 Billings MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2014-11-02   
406-606 1 Billings MT BLNGMTMATMD  935G TRI TEL, INC. - MT 650   2013-01-28   
406-606 2 Billings MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2014-11-14   
406-606 3 Billings MT BLNGMTWEDMD  624H ONVOY SPECTRUM, LLC 650   2022-11-12   
406-606 4 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2019-07-08   
406-606 5 Billings MT BLNGMTWEDMD  624H ONVOY SPECTRUM, LLC 650   2022-11-12   
406-606 6 Billings MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2019-07-08   
406-606 7 Billings MT BLNGMTWEDMD  624H ONVOY SPECTRUM, LLC 650   2022-11-12   
406-606 8 Billings MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2018-10-09   
406-606 9 Billings MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2018-10-09   
406-607 A Kalispell MT KLSLMTXC4MD  7870 BLACKFOOT COMMUNICATIONS, INC. - MT 648      
406-607 0 Kalispell MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648   2016-06-05   
406-607 1 Kalispell MT MSSLMTMACMD  6529 T-MOBILE USA, INC. 648   2021-04-06   
406-607 2 Kalispell MT MSSLMTMACMD  6529 T-MOBILE USA, INC. 648   2022-02-25   
406-607 3 Kalispell MT MSSLMTMACMD  6529 T-MOBILE USA, INC. 648   2022-03-15   
406-607 4 Kalispell MT KLSLMTXC4MD  7870 BLACKFOOT COMMUNICATIONS, INC. - MT 648   2013-12-30   
406-607 5 Kalispell MT MSSLMTMACMD  6529 T-MOBILE USA, INC. 648   2020-03-27   
406-607 6 Kalispell MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-06-20   
406-607 7 Kalispell MT MSSLMTMACMD  6529 T-MOBILE USA, INC. 648   2018-10-30   
406-607 8 Kalispell MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-06-20   
406-607 9 Kalispell MT MSSLMTMACMD  6529 T-MOBILE USA, INC. 648   2019-08-02   
406-608 A Billings MT BLNGMTASKMD  515J IP HORIZON LLC 650      
406-608 0 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2022-08-29   
406-608 1 Billings MT BLNGMTASKMD  515J IP HORIZON LLC 650   2021-06-27   
406-608 2 Billings MT BLNGMTWEDMD  624H ONVOY SPECTRUM, LLC 650   2021-11-15   
406-608 3 Billings MT BLNGMTWEDMD  624H ONVOY SPECTRUM, LLC 650   2021-11-15   
406-608 4 Billings MT BLNGMTWEDMD  624H ONVOY SPECTRUM, LLC 650   2021-11-15   
406-608 5 Billings MT BLNGMTWEDMD  624H ONVOY SPECTRUM, LLC 650   2021-11-15   
406-608 6 Billings MT BLNGMTWEDMD  624H ONVOY SPECTRUM, LLC 650   2021-11-15   
406-608 7 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2022-08-29   
406-608 8 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2022-08-29   
406-608 9 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2022-08-29   
406-609 A Kalispell MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-609 0 Kalispell MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-07-05   
406-609 1 Kalispell MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648   2023-01-29   
406-609 2 Kalispell MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-07-05   

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

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