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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
406-952 3 Great Falls MT HLNAMTMAMMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 648   2006-11-30   
406-952 4 Great Falls MT HLNAMTHH5MD  792K CHARTER IP ENABLED SERVICES, LLC 648   2005-07-17   
406-952 5 Great Falls MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2021-10-30   
406-952 6 Great Falls MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2021-10-30   
406-952 7 Great Falls MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2020-08-05   
406-952 8 Great Falls MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2020-08-05   
406-952 9 Great Falls MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2020-08-05   
406-953 A Hardin MT   443B SAGEBRUSH CELLULAR, INC. 650      
406-953 0 Hardin MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-953 1 Hardin MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2025-11-24   
406-953 2 Hardin MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2021-03-07   
406-953 3 Hardin MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2021-03-07   
406-953 4 Hardin MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-953 5 Hardin MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2020-01-05   
406-953 6 Hardin MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2020-01-05   
406-953 8 Hardin MT   443B SAGEBRUSH CELLULAR, INC. 650   2019-01-10   
406-953 9 Hardin MT   443B SAGEBRUSH CELLULAR, INC. 650   2019-01-10   
406-954 A Roy MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-954 0 Roy MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-954 2 Roy MT   145J TERRA NOVA TELECOM INC. 650   2026-04-30   
406-955 A Kalispell MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2024-01-18   
406-955 0 Kalispell MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2025-11-25   
406-955 1 Kalispell MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2024-08-22   
406-955 2 Kalispell MT   6010 NEW CINGULAR WIRELESS PCS, LLC 648   2025-05-29   
406-955 3 Kalispell MT   6529 T-MOBILE USA, INC. 648   2025-10-12   
406-955 4 Kalispell MT   6010 NEW CINGULAR WIRELESS PCS, LLC 648   2025-05-29   
406-955 5 Kalispell MT MSSLMTMACMD  5562 METROPCS, INC. 648   2024-10-14   
406-955 6 Kalispell MT MSSLMTMACMD  6529 T-MOBILE USA, INC. 648   2024-02-01   
406-955 7 Kalispell MT   6010 NEW CINGULAR WIRELESS PCS, LLC 648   2025-05-29   
406-955 8 Kalispell MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648   2024-01-19   
406-955 9 Kalispell MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648   2024-01-19   
406-956 A Baker MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-956 0 Baker MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650   2010-12-17   
406-957 A Terry MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-957 0 Terry MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-957 1 Terry MT BLNGMT93DS0  588H AIRUS, INC. - MT 650   2020-03-01   
406-957 2 Terry MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2021-03-07   
406-957 3 Terry MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2023-02-27   
406-957 6 Terry MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2019-09-15   
406-957 7 Terry MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2019-09-15   
406-957 8 Terry MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-957 9 Terry MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-960 A Dillon MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-960 0 Dillon MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-960 4 Dillon MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-961 A Hamilton MT CRVSMTMARS1  9636 QWEST CORPORATION 648      
406-961 0 Hamilton MT CRVSMTMARS1  9636 QWEST CORPORATION 648      
406-961 1 Hamilton MT CRVSMTMARS1  9636 QWEST CORPORATION 648      
406-961 2 Hamilton MT   145J TERRA NOVA TELECOM INC. 648   2025-12-08   
406-961 3 Hamilton MT CRVSMTMARS1  9636 QWEST CORPORATION 648      
406-961 4 Hamilton MT CRVSMTMARS1  9636 QWEST CORPORATION 648      
406-961 5 Hamilton MT CRVSMTMARS1  9636 QWEST CORPORATION 648      
406-961 6 Hamilton MT   6010 NEW CINGULAR WIRELESS PCS, LLC 648   2026-05-04   
406-961 7 Hamilton MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2011-01-23   
406-961 8 Hamilton MT CRVSMTMARS1  9636 QWEST CORPORATION 648      
406-961 9 Hamilton MT MSSLMTEH4MD  792K CHARTER IP ENABLED SERVICES, LLC 648   2008-11-21   
406-962 A Joliet MT JOLTMTMARS1  9636 QWEST CORPORATION 650      
406-962 0 Joliet MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2004-11-13   
406-962 1 Joliet MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2008-07-17   
406-962 2 Joliet MT   145J TERRA NOVA TELECOM INC. 650   2020-11-19   
406-962 3 Joliet MT JOLTMTMARS1  9636 QWEST CORPORATION 650      
406-962 4 Joliet MT JOLTMTMARS1  9636 QWEST CORPORATION 650      
406-962 5 Joliet MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2008-11-26   
406-962 6 Joliet MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2010-02-20   
406-962 7 Joliet MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2007-03-19   
406-962 9 Joliet MT JOLTMTMARS1  9636 QWEST CORPORATION 650      
406-963 A Froid Rural MT FRODMT01RS0  2247 NEMONT TEL COOP INC 650      
406-963 2 Froid Rural MT FRODMT01RS0  2247 NEMONT TEL COOP INC 650      
406-963 7 Froid Rural MT GLSGMTXC1MD  443B SAGEBRUSH CELLULAR, INC. 650      
406-964 A Great Falls MT VGHNMTMARS1  9636 QWEST CORPORATION 648      
406-964 0 Great Falls MT VGHNMTMARS1  9636 QWEST CORPORATION 648      
406-964 1 Great Falls MT VGHNMTMARS1  9636 QWEST CORPORATION 648      
406-964 2 Great Falls MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2021-10-30   
406-964 3 Great Falls MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2021-10-30   
406-964 4 Great Falls MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2020-10-05   
406-964 5 Great Falls MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2020-10-05   
406-964 6 Great Falls MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2020-10-05   
406-964 7 Great Falls MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648   2024-11-10   
406-964 8 Great Falls MT VGHNMTMARS1  9636 QWEST CORPORATION 648      
406-964 9 Great Falls MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648   2023-12-23   
406-965 A Great Falls MT GRFLMTMADS3  588H AIRUS, INC. - MT 648      
406-965 1 Great Falls MT GRFLMTMADS3  588H AIRUS, INC. - MT 648   2023-11-26   
406-965 2 Great Falls MT VGHNMTMARS1  9636 QWEST CORPORATION 648      
406-965 3 Great Falls MT VGHNMTMARS1  9636 QWEST CORPORATION 648      
406-966 A Shelby MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-966 0 Shelby MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-966 1 Shelby MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2012-12-17   
406-966 2 Shelby MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2012-12-17   
406-966 3 Shelby MT HLNAMTMAMMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 648   2014-03-14   
406-966 4 Shelby MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-966 5 Shelby MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-03-07   
406-966 6 Shelby MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-03-07   
406-966 7 Shelby MT HLNAMTMAUMD  508J CENTURYLINK COMMUNICATIONS, LLC 648   2014-05-24   
406-967 A Worden MT WRDNMTXCDS0  2250 PROJECT TEL. CO., INC. 650      
406-967 0 Worden MT   2250 PROJECT TEL. CO., INC. 650      
406-967 1 Worden MT   792K CHARTER IP ENABLED SERVICES, LLC 650   2025-05-06   
406-967 2 Worden MT   2250 PROJECT TEL. CO., INC. 650      
406-967 3 Worden MT   2250 PROJECT TEL. CO., INC. 650      
406-967 4 Worden MT   2250 PROJECT TEL. CO., INC. 650      
406-967 5 Worden MT   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2025-04-07   

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Last updated: Sun, 17 May 2026 03:26:51 UTC

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