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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
406-550 7 Missoula MT MSSLMTMACMD  6529 T-MOBILE USA, INC. 648   2022-10-16   
406-550 8 Missoula MT GRFLMTMAHMD  073H TELNYX LLC 648   2023-02-24   
406-550 9 Missoula MT GRFLMTMAHMD  073H TELNYX LLC 648   2023-02-24   
406-551 A Bozeman MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-551 0 Bozeman MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2011-05-13   
406-551 1 Bozeman MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2006-05-27   
406-551 2 Bozeman MT BZMNMTEF2MD  792K CHARTER IP ENABLED SERVICES, LLC 650   2006-12-08   
406-551 3 Bozeman MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2011-06-06   
406-551 4 Bozeman MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-551 5 Bozeman MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2011-07-20   
406-551 6 Bozeman MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2006-01-14   
406-551 7 Bozeman MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2014-10-24   
406-551 8 Bozeman MT BLNGMTMATMD  935G TRI TEL, INC. - MT 650   2017-09-02   
406-551 9 Bozeman MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2011-11-25   
406-552 A Missoula MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-552 0 Missoula MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2005-01-14   
406-552 1 Missoula MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2005-01-26   
406-552 2 Missoula MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2010-01-04   
406-552 3 Missoula MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2010-02-09   
406-552 4 Missoula MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-552 5 Missoula MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2010-04-05   
406-552 6 Missoula MT MSSLMTMADS0  9636 QWEST CORPORATION 648   2006-04-25   
406-552 7 Missoula MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2010-05-03   
406-552 8 Missoula MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2010-09-23   
406-552 9 Missoula MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2010-10-22   
406-553 A Divide MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-553 3 Divide MT   145J TERRA NOVA TELECOM INC. 648   2025-10-09   
406-554 A North Broadus MT BRDSMTXCRS1  2251 RANGE TEL COOP INC 650      
406-556 A Bozeman MT BZMNMTMADS0  9636 QWEST CORPORATION 650      
406-557 A Jordan MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-557 2 Jordan MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-557 6 Jordan MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-557 7 Jordan MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2018-12-17   
406-557 9 Jordan MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-558 A Helena MT   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 648      
406-558 0 Helena MT GRFLMTMAHMD  073H TELNYX LLC 648   2024-10-27   
406-558 2 Helena MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2014-10-24   
406-558 3 Helena MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2021-10-02   
406-558 4 Helena MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-558 5 Helena MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2024-05-05   
406-558 6 Helena MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2024-05-05   
406-558 7 Helena MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2024-05-05   
406-558 8 Helena MT   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 648   2025-11-23   
406-558 9 Helena MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2004-09-27   
406-559 A Anaconda MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-559 0 Anaconda MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-559 1 Anaconda MT   6010 NEW CINGULAR WIRELESS PCS, LLC 648   2025-05-30   
406-559 2 Anaconda MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2011-01-16   
406-559 3 Anaconda MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2012-12-17   
406-559 4 Anaconda MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-09-15   
406-559 5 Anaconda MT   145J TERRA NOVA TELECOM INC. 648   2025-10-06   
406-559 6 Anaconda MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648   2010-11-05   
406-559 7 Anaconda MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2016-06-18   
406-559 8 Anaconda MT GRFLMTMAHMD  073H TELNYX LLC 648   2020-08-07   
406-559 9 Anaconda MT GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2021-10-30   
406-560 A Anaconda MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-560 0 Anaconda MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-560 1 Anaconda MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-560 2 Anaconda MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-560 3 Anaconda MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-560 4 Anaconda MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-560 5 Anaconda MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-560 6 Anaconda MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-560 7 Anaconda MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-560 8 Anaconda MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-561 A Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650      
406-561 0 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2020-02-02   
406-561 1 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2020-02-02   
406-561 2 Billings MT BLNGMTMAXMD  5562 METROPCS, INC. 650   2018-08-04   
406-561 3 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2019-04-28   
406-561 4 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2019-04-28   
406-561 5 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2018-11-25   
406-561 6 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2018-05-10   
406-561 7 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2018-05-10   
406-561 8 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2018-03-22   
406-561 9 Billings MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2017-11-01   
406-562 A Augusta MT FRFDMTXCDS1  2255 3 RIVERS TEL. COOP., INC. 648      
406-563 A Anaconda MT ANCNMTMARS1  9636 QWEST CORPORATION 648      
406-563 0 Anaconda MT HLNAMTHH5MD  792K CHARTER IP ENABLED SERVICES, LLC 648   2006-04-09   
406-563 2 Anaconda MT ANCNMTMARS1  9636 QWEST CORPORATION 648      
406-563 3 Anaconda MT ANCNMTMARS1  9636 QWEST CORPORATION 648      
406-563 4 Anaconda MT ANCNMTMARS1  9636 QWEST CORPORATION 648      
406-563 5 Anaconda MT ANCNMTMARS1  9636 QWEST CORPORATION 648      
406-563 6 Anaconda MT ANCNMTMARS1  9636 QWEST CORPORATION 648      
406-563 7 Anaconda MT ANCNMTMARS1  9636 QWEST CORPORATION 648      
406-563 8 Anaconda MT ANCNMTMARS1  9636 QWEST CORPORATION 648      
406-563 9 Anaconda MT ANCNMTMARS1  9636 QWEST CORPORATION 648      
406-564 A Great Falls MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-564 0 Great Falls MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2010-09-23   
406-564 1 Great Falls MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2005-06-03   
406-564 2 Great Falls MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2010-10-22   
406-564 3 Great Falls MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2011-02-06   
406-564 4 Great Falls MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-564 5 Great Falls MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2011-03-07   
406-564 6 Great Falls MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648   2010-11-06   
406-564 7 Great Falls MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2011-04-04   
406-564 8 Great Falls MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2011-06-03   
406-564 9 Great Falls MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2011-07-05   
406-565 A Butte MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-565 0 Butte MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2008-09-15   

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

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