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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
406-510 8 Missoula MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2017-04-21   
406-510 9 Missoula MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2017-04-21   
406-512 A Boulder MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-512 0 Boulder MT GRFLMTMAHMD  073H TELNYX LLC 648   2023-07-16   
406-512 1 Boulder MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2023-04-25   
406-512 2 Boulder MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2023-04-26   
406-512 8 Boulder MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2023-08-20   
406-513 A Helena MT HLNAMTHH5MD  792K CHARTER IP ENABLED SERVICES, LLC 648      
406-513 1 Helena MT HLNAMTHH5MD  792K CHARTER IP ENABLED SERVICES, LLC 648   2008-05-30   
406-513 8 Helena MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2024-09-11   
406-513 9 Helena MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2024-09-11   
406-514 A Culbertson MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-514 0 Culbertson MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650   2010-12-17   
406-514 1 Culbertson MT   6010 NEW CINGULAR WIRELESS PCS, LLC 650   2025-02-03   
406-515 A Superior MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-515 0 Superior MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-515 5 Superior MT   145J TERRA NOVA TELECOM INC. 648   2025-10-09   
406-515 9 Superior MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648   2021-05-24   
406-516 A Laurel MT BLNGMT93EMD  490J DISH WIRELESS, LLC 650      
406-516 0 Laurel MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2023-12-13   
406-516 1 Laurel MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2024-04-14   
406-516 2 Laurel MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2025-07-24   
406-516 8 Laurel MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2024-12-18   
406-516 9 Laurel MT BLNGMT93EMD  490J DISH WIRELESS, LLC 650   2023-06-29   
406-517 A Livingston MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2024-07-22   
406-517 0 Livingston MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2024-07-22   
406-517 1 Livingston MT BLNGMTMAXMD  6529 T-MOBILE USA, INC. 650   2024-09-23   
406-517 2 Livingston MT BLNGMTWEDMD  624H ONVOY SPECTRUM, LLC 650   2025-01-16   
406-517 3 Livingston MT   6010 NEW CINGULAR WIRELESS PCS, LLC 650   2025-02-10   
406-517 8 Livingston MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2024-11-23   
406-517 9 Livingston MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2025-02-12   
406-518 A Gallatin Gateway MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650      
406-518 0 Gallatin Gateway MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2012-12-17   
406-518 1 Gallatin Gateway MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2015-05-31   
406-518 2 Gallatin Gateway MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2021-02-11   
406-518 3 Gallatin Gateway MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2021-02-11   
406-518 4 Gallatin Gateway MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2019-09-15   
406-518 5 Gallatin Gateway MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2020-11-10   
406-518 6 Gallatin Gateway MT   624H ONVOY SPECTRUM, LLC 650   2025-02-17   
406-518 7 Gallatin Gateway MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2011-11-24   
406-518 8 Gallatin Gateway MT BLNGMT933MD  073H TELNYX LLC 650   2019-10-04   
406-518 9 Gallatin Gateway MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2021-07-05   
406-519 A Missoula MT GRFLMTMANMD  515J IP HORIZON LLC 648      
406-519 0 Missoula MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-07-05   
406-519 1 Missoula MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-07-05   
406-519 2 Missoula MT MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2021-06-27   
406-519 3 Missoula MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-07-05   
406-519 4 Missoula MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-03-26   
406-519 5 Missoula MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-03-26   
406-519 6 Missoula MT MSSLMTXC3MD  939H COMMIO, LLC 648   2023-09-22   
406-519 7 Missoula MT GRFLMTMANMD  515J IP HORIZON LLC 648   2021-10-22   
406-519 8 Missoula MT MSSLMTMACMD  6529 T-MOBILE USA, INC. 648   2022-05-20   
406-519 9 Missoula MT MSSLMTMACMD  6529 T-MOBILE USA, INC. 648   2022-05-20   
406-520 A Absarokee MT BLNGMT93BMD  321J HD CARRIER LLC 650      
406-520 0 Absarokee MT   145J TERRA NOVA TELECOM INC. 650   2025-08-29   
406-520 5 Absarokee MT BLNGMT93BMD  321J HD CARRIER LLC 650   2020-09-27   
406-520 6 Absarokee MT BLNGMT93BMD  321J HD CARRIER LLC 650   2020-11-01   
406-521 A Townsend MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-521 0 Townsend MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-521 1 Townsend MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2012-12-17   
406-521 2 Townsend MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2019-01-17   
406-521 3 Townsend MT HLNAMTMAMMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 648   2017-08-07   
406-521 4 Townsend MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-09-15   
406-521 5 Townsend MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2019-06-21   
406-521 6 Townsend MT HLNAMTMAUMD  508J CENTURYLINK COMMUNICATIONS, LLC 648   2014-05-24   
406-521 7 Townsend MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2011-10-24   
406-521 8 Townsend MT GRFLMTMAHMD  073H TELNYX LLC 648   2020-08-13   
406-521 9 Townsend MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-03-07   
406-522 A Bozeman MT BZMNMTMADS0  9636 QWEST CORPORATION 650      
406-523 A Missoula MT MSSLMTMADS0  9636 QWEST CORPORATION 648      
406-524 A Valley Industrial Park MT GAFBMTXCRS1  2247 NEMONT TEL COOP INC 650      
406-524 3 Valley Industrial Park MT GAFBMTXCRS1  2247 NEMONT TEL COOP INC 650      
406-524 7 Valley Industrial Park MT GAFBMTXCRS1  2247 NEMONT TEL COOP INC 650      
406-524 8 Valley Industrial Park MT GLSGMTXC1MD  443B SAGEBRUSH CELLULAR, INC. 650      
406-525 A South Wolf Point MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-525 2 South Wolf Point MT   145J TERRA NOVA TELECOM INC. 650   2025-06-07   
406-525 3 South Wolf Point MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-525 5 South Wolf Point MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2018-12-17   
406-526 A Fort Peck MT FTPCMTXCRS1  2247 NEMONT TEL COOP INC 650      
406-526 3 Fort Peck MT FTPCMTXCRS1  2247 NEMONT TEL COOP INC 650      
406-526 7 Fort Peck MT GLSGMTXC1MD  443B SAGEBRUSH CELLULAR, INC. 650      
406-526 8 Fort Peck MT FTPCMTXCRS1  2247 NEMONT TEL COOP INC 650      
406-527 A Saco MT SACOMTXCRS1  2247 NEMONT TEL COOP INC 650      
406-527 3 Saco MT SACOMTXCRS1  2247 NEMONT TEL COOP INC 650      
406-527 6 Saco MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650   2021-07-27   
406-527 7 Saco MT GLSGMTXC1MD  443B SAGEBRUSH CELLULAR, INC. 650      
406-528 A Ronan MT RONNMTXCDS0  2252 RONAN TEL. CO. 648      
406-529 A Missoula MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-530 A Laurel MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650      
406-530 0 Laurel MT BLNGMT934MD  939H COMMIO, LLC 650   2022-07-29   
406-530 1 Laurel MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2006-10-20   
406-530 2 Laurel MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2007-01-05   
406-530 3 Laurel MT BZMNMTHZDS0  746D MONTANA OPTICOM, LLC - MT 650   2010-08-16   
406-530 4 Laurel MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650   2010-11-06   
406-530 5 Laurel MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2015-05-31   
406-530 6 Laurel MT BLNGMTWE6MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2008-05-13   
406-530 7 Laurel MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2011-08-11   
406-530 8 Laurel MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2011-08-11   
406-530 9 Laurel MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2008-11-26   
406-531 A Missoula MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      

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

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