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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
406-632 8 Harlowton MT   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2019-01-11   
406-632 9 Harlowton MT   3310 TRIANGLE TEL. COOP. ASSN., INC. 650      
406-633 A Laurel MT PRCYMTMARS1  9636 QWEST CORPORATION 650      
406-633 0 Laurel MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2009-05-22   
406-633 1 Laurel MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2009-11-13   
406-633 2 Laurel MT   9636 QWEST CORPORATION 650      
406-633 3 Laurel MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2010-06-21   
406-633 4 Laurel MT   792K CHARTER IP ENABLED SERVICES, LLC 650   2011-03-27   
406-633 5 Laurel MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2011-06-03   
406-633 7 Laurel MT   935G TRI TEL, INC. - MT 650   2013-01-28   
406-633 8 Laurel MT   145J TERRA NOVA TELECOM INC. 650   2024-12-05   
406-633 9 Laurel MT   9636 QWEST CORPORATION 650      
406-634 A Helena MT   453F ONVOY, LLC - MT 648      
406-634 3 Helena MT   453F ONVOY, LLC - MT 648   2020-09-06   
406-634 4 Helena MT   453F ONVOY, LLC - MT 648   2020-09-06   
406-634 5 Helena MT   490J DISH WIRELESS, LLC 648   2023-08-21   
406-635 A Terry MT WGLNMTXCDS2  2246 MID-RIVERS TEL. COOP., INC. 650      
406-635 0 Terry MT   073H TELNYX LLC 650   2018-07-25   
406-635 1 Terry MT   588H AIRUS, INC. - MT 650   2021-02-18   
406-635 2 Terry MT   145J TERRA NOVA TELECOM INC. 650   2021-11-04   
406-635 3 Terry MT   453F ONVOY, LLC - MT 650   2021-07-08   
406-635 4 Terry MT   2246 MID-RIVERS TEL. COOP., INC. 650      
406-635 5 Terry MT   2246 MID-RIVERS TEL. COOP., INC. 650      
406-635 6 Terry MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2018-12-17   
406-635 7 Terry MT   453F ONVOY, LLC - MT 650   2021-03-07   
406-635 8 Terry MT   588H AIRUS, INC. - MT 650   2018-03-02   
406-635 9 Terry MT   2246 MID-RIVERS TEL. COOP., INC. 650      
406-636 A Lavina MT RNDPMTXCDS0  2246 MID-RIVERS TEL. COOP., INC. 650      
406-637 A Terry MT TRRYMTMARS1  9636 QWEST CORPORATION 650      
406-637 3 Terry MT   994E BANDWIDTH.COM CLEC, LLC - MT 650   2012-02-10   
406-637 4 Terry MT   453F ONVOY, LLC - MT 650   2012-12-17   
406-637 5 Terry MT   9636 QWEST CORPORATION 650      
406-637 6 Terry MT   453F ONVOY, LLC - MT 650   2007-03-19   
406-637 7 Terry MT   453F ONVOY, LLC - MT 650   2011-10-24   
406-637 8 Terry MT   588H AIRUS, INC. - MT 650   2019-05-11   
406-638 A Hardin MT CWAGMTXCDS0  2250 PROJECT TEL. CO., INC. 650      
406-638 0 Hardin MT   6010 NEW CINGULAR WIRELESS PCS, LLC 650   2025-10-10   
406-638 1 Hardin MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2014-09-05   
406-638 2 Hardin MT   2250 PROJECT TEL. CO., INC. 650      
406-638 3 Hardin MT   2250 PROJECT TEL. CO., INC. 650      
406-638 4 Hardin MT   2250 PROJECT TEL. CO., INC. 650      
406-638 5 Hardin MT   453F ONVOY, LLC - MT 650   2021-07-05   
406-638 6 Hardin MT   771G TELEPORT COMMUNICATIONS AMERICA MT - LLC 650   2020-08-07   
406-638 7 Hardin MT   2250 PROJECT TEL. CO., INC. 650      
406-638 8 Hardin MT   453F ONVOY, LLC - MT 650   2021-07-05   
406-638 9 Hardin MT   2250 PROJECT TEL. CO., INC. 650      
406-639 A Lodge Grass MT LDGSMTXCRS1  2250 PROJECT TEL. CO., INC. 650      
406-640 A West Yellowstone MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-640 0 West Yellowstone MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-640 1 West Yellowstone MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-640 2 West Yellowstone MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-640 3 West Yellowstone MT   994E BANDWIDTH.COM CLEC, LLC - MT 650   2010-02-20   
406-640 4 West Yellowstone MT   994E BANDWIDTH.COM CLEC, LLC - MT 650   2011-01-10   
406-640 5 West Yellowstone MT   994E BANDWIDTH.COM CLEC, LLC - MT 650   2022-02-12   
406-640 6 West Yellowstone MT   453F ONVOY, LLC - MT 650   2021-07-08   
406-640 7 West Yellowstone MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2022-06-18   
406-640 8 West Yellowstone MT   994E BANDWIDTH.COM CLEC, LLC - MT 650   2014-03-31   
406-640 9 West Yellowstone MT   073H TELNYX LLC 650   2018-07-25   
406-641 A West Yellowstone MT BLNGMTWEIMD  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-641 0 West Yellowstone MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650      
406-641 1 West Yellowstone MT   453F ONVOY, LLC - MT 650   2012-12-17   
406-641 2 West Yellowstone MT   994E BANDWIDTH.COM CLEC, LLC - MT 650   2015-06-05   
406-641 3 West Yellowstone MT   453F ONVOY, LLC - MT 650   2019-09-15   
406-641 4 West Yellowstone MT   453F ONVOY, LLC - MT 650   2020-11-10   
406-641 5 West Yellowstone MT   453F ONVOY, LLC - MT 650   2019-09-15   
406-641 6 West Yellowstone MT   624H ONVOY SPECTRUM, LLC 650   2025-02-17   
406-641 7 West Yellowstone MT   453F ONVOY, LLC - MT 650   2011-10-24   
406-641 8 West Yellowstone MT   453F ONVOY, LLC - MT 650   2021-03-07   
406-641 9 West Yellowstone MT   453F ONVOY, LLC - MT 650   2021-03-07   
406-642 A Victor MT VCTRMTMARS1  9636 QWEST CORPORATION 648      
406-642 0 Victor MT   453F ONVOY, LLC - MT 648   2019-09-15   
406-642 2 Victor MT   9636 QWEST CORPORATION 648      
406-642 3 Victor MT   9636 QWEST CORPORATION 648      
406-642 4 Victor MT   453F ONVOY, LLC - MT 648   2019-09-15   
406-642 5 Victor MT   508J CENTURYLINK COMMUNICATIONS, LLC 648   2014-05-24   
406-642 6 Victor MT   9636 QWEST CORPORATION 648      
406-642 7 Victor MT   453F ONVOY, LLC - MT 648   2007-03-19   
406-642 8 Victor MT   453F ONVOY, LLC - MT 648   2011-10-24   
406-642 9 Victor MT   9636 QWEST CORPORATION 648      
406-643 A North Parkman MT CHYNWYMAX2X  453F ONVOY, LLC - MT 654      
406-643 0 North Parkman MT   453F ONVOY, LLC - MT 654   2012-12-17   
406-643 1 North Parkman MT   073H TELNYX LLC 654   2018-07-25   
406-643 2 North Parkman MT   453F ONVOY, LLC - MT 654   2021-02-11   
406-643 3 North Parkman MT   453F ONVOY, LLC - MT 654   2021-02-11   
406-643 4 North Parkman MT   453F ONVOY, LLC - MT 654   2020-11-10   
406-643 5 North Parkman MT   453F ONVOY, LLC - MT 654   2021-07-05   
406-643 6 North Parkman MT   453F ONVOY, LLC - MT 654   2019-09-15   
406-643 7 North Parkman MT   453F ONVOY, LLC - MT 654   2007-07-18   
406-643 8 North Parkman MT   624H ONVOY SPECTRUM, LLC 654   2021-07-19   
406-643 9 North Parkman MT   624H ONVOY SPECTRUM, LLC 654   2021-11-14   
406-644 A Charlo MT CHRLMTXCRS1  2235 BLACKFOOT TEL. COOP., INC. 648      
406-644 1 Charlo MT   986F WESTERN MONTANA COMMUNITYTEL INC. - MT 648   2013-08-25   
406-644 2 Charlo MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-644 3 Charlo MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-644 4 Charlo MT   145J TERRA NOVA TELECOM INC. 648   2025-10-09   
406-644 9 Charlo MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-645 A Deer Lodge MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-645 2 Deer Lodge MT   624H ONVOY SPECTRUM, LLC 648   2025-01-02   
406-645 4 Deer Lodge MT   453F ONVOY, LLC - MT 648   2020-01-03   
406-645 5 Deer Lodge MT   453F ONVOY, LLC - MT 648   2019-09-15   

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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