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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
406-813 A Belgrade MT BLNGMTWEAMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 650      
406-813 0 Belgrade MT   994E BANDWIDTH.COM CLEC, LLC - MT 650   2015-03-21   
406-813 1 Belgrade MT   994E BANDWIDTH.COM CLEC, LLC - MT 650   2012-09-09   
406-813 2 Belgrade MT   994E BANDWIDTH.COM CLEC, LLC - MT 650   2021-06-12   
406-813 3 Belgrade MT   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 650   2011-11-01   
406-813 4 Belgrade MT   508J CENTURYLINK COMMUNICATIONS, LLC 650   2016-08-10   
406-813 5 Belgrade MT   453F ONVOY, LLC - MT 650   2012-12-17   
406-813 6 Belgrade MT   453F ONVOY, LLC - MT 650   2012-12-17   
406-813 7 Belgrade MT   453F ONVOY, LLC - MT 650   2012-12-17   
406-813 8 Belgrade MT   792K CHARTER IP ENABLED SERVICES, LLC 650   2012-03-13   
406-813 9 Belgrade MT   073H TELNYX LLC 650   2017-03-31   
406-815 A Red Lodge MT BLNGMTMAX5X  7421 AT&T - LOCAL 650      
406-815 0 Red Lodge MT   453F ONVOY, LLC - MT 650   2023-08-20   
406-815 1 Red Lodge MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2025-07-23   
406-815 4 Red Lodge MT   453F ONVOY, LLC - MT 650   2020-11-10   
406-815 5 Red Lodge MT   453F ONVOY, LLC - MT 650   2020-11-10   
406-815 6 Red Lodge MT   453F ONVOY, LLC - MT 650   2020-01-05   
406-815 7 Red Lodge MT   453F ONVOY, LLC - MT 650   2021-03-07   
406-815 8 Red Lodge MT   453F ONVOY, LLC - MT 650   2021-03-07   
406-815 9 Red Lodge MT   7421 AT&T - LOCAL 650   2022-03-08   
406-818 A Red Lodge MT BLNGMTMAMMD  6010 NEW CINGULAR WIRELESS PCS, LLC 650      
406-818 0 Red Lodge MT   6010 NEW CINGULAR WIRELESS PCS, LLC 650   2015-04-03   
406-818 1 Red Lodge MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2025-03-15   
406-818 4 Red Lodge MT   6010 NEW CINGULAR WIRELESS PCS, LLC 650   2024-07-26   
406-818 5 Red Lodge MT   145J TERRA NOVA TELECOM INC. 650   2022-01-16   
406-820 A Olney MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-820 0 Olney MT   145J TERRA NOVA TELECOM INC. 648   2025-10-09   
406-820 1 Olney MT   453F ONVOY, LLC - MT 648   2012-12-14   
406-820 2 Olney MT   453F ONVOY, LLC - MT 648   2012-12-14   
406-820 3 Olney MT   453F ONVOY, LLC - MT 648   2012-12-14   
406-820 4 Olney MT   453F ONVOY, LLC - MT 648   2021-02-11   
406-820 5 Olney MT   453F ONVOY, LLC - MT 648   2021-02-11   
406-820 6 Olney MT   453F ONVOY, LLC - MT 648   2019-09-15   
406-820 7 Olney MT   453F ONVOY, LLC - MT 648   2007-12-06   
406-820 8 Olney MT   453F ONVOY, LLC - MT 648   2011-03-05   
406-820 9 Olney MT   073H TELNYX LLC 648   2020-08-13   
406-821 A Darby MT DRBYMTMARS1  9636 QWEST CORPORATION 648      
406-821 0 Darby MT   9636 QWEST CORPORATION 648      
406-821 1 Darby MT   9636 QWEST CORPORATION 648      
406-821 2 Darby MT   9636 QWEST CORPORATION 648      
406-821 3 Darby MT   9636 QWEST CORPORATION 648      
406-821 4 Darby MT   9636 QWEST CORPORATION 648      
406-821 5 Darby MT   073H TELNYX LLC 648   2020-08-07   
406-821 6 Darby MT   453F ONVOY, LLC - MT 648   2007-03-19   
406-821 7 Darby MT   453F ONVOY, LLC - MT 648   2012-12-10   
406-821 8 Darby MT   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2020-05-06   
406-821 9 Darby MT   9636 QWEST CORPORATION 648      
406-822 A Superior MT ALTNMTXBRS1  2235 BLACKFOOT TEL. COOP., INC. 648      
406-822 2 Superior MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-822 3 Superior MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-822 4 Superior MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-822 9 Superior MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-823 A Livingston MT LVTNMTMADS0  9636 QWEST CORPORATION 650      
406-823 0 Livingston MT   994E BANDWIDTH.COM CLEC, LLC - MT 650   2009-02-13   
406-823 1 Livingston MT   746D MONTANA OPTICOM, LLC - MT 650   2010-08-16   
406-823 2 Livingston MT   453F ONVOY, LLC - MT 650   2020-01-05   
406-823 3 Livingston MT   453F ONVOY, LLC - MT 650   2012-12-17   
406-823 4 Livingston MT   453F ONVOY, LLC - MT 650   2012-12-17   
406-823 5 Livingston MT   453F ONVOY, LLC - MT 650   2020-01-05   
406-823 6 Livingston MT   9636 QWEST CORPORATION 650      
406-823 7 Livingston MT   145J TERRA NOVA TELECOM INC. 650   2021-09-28   
406-823 8 Livingston MT   453F ONVOY, LLC - MT 650   2011-10-24   
406-823 9 Livingston MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 650   2013-05-26   
406-824 A St Ignatius MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-825 A Clinton MT CLTNMTXCRS1  2235 BLACKFOOT TEL. COOP., INC. 648      
406-825 3 Clinton MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-825 9 Clinton MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-826 A Plains MT PLNSMTXCRS1  2235 BLACKFOOT TEL. COOP., INC. 648      
406-826 0 Plains MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-826 1 Plains MT   986F WESTERN MONTANA COMMUNITYTEL INC. - MT 648   2013-08-25   
406-826 2 Plains MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-826 3 Plains MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-826 4 Plains MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-826 5 Plains MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-826 6 Plains MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-826 7 Plains MT   145J TERRA NOVA TELECOM INC. 648   2025-10-11   
406-826 8 Plains MT   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2016-06-27   
406-826 9 Plains MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-827 A Thompson Falls MT THFLMTXCRS1  2235 BLACKFOOT TEL. COOP., INC. 648      
406-827 0 Thompson Falls MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-827 1 Thompson Falls MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-827 2 Thompson Falls MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-827 3 Thompson Falls MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-827 4 Thompson Falls MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-827 5 Thompson Falls MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-827 6 Thompson Falls MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-827 7 Thompson Falls MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-827 9 Thompson Falls MT   2235 BLACKFOOT TEL. COOP., INC. 648      
406-828 A Alzada MT ALZDMTXCRS1  2251 RANGE TEL COOP INC 650      
406-828 4 Alzada MT   2251 RANGE TEL COOP INC 650      
406-828 8 Alzada MT   145J TERRA NOVA TELECOM INC. 650   2025-08-29   
406-829 A Missoula MT MSSLMTMADS0  9636 QWEST CORPORATION 648      
406-830 A Missoula MT MSSLMTEH4MD  792K CHARTER IP ENABLED SERVICES, LLC 648      
406-830 0 Missoula MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2010-11-22   
406-830 1 Missoula MT   6010 NEW CINGULAR WIRELESS PCS, LLC 648   2016-06-05   
406-830 2 Missoula MT   986F WESTERN MONTANA COMMUNITYTEL INC. - MT 648   2016-04-22   
406-830 3 Missoula MT   792K CHARTER IP ENABLED SERVICES, LLC 648   2007-04-08   
406-830 4 Missoula MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2012-10-06   
406-830 5 Missoula MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2012-04-09   
406-830 6 Missoula MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2012-07-20   

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Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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