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Great Falls, MT

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
406-454 A GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-455 A   247L YORKSTREAM COMMUNICATIONS LLC 648      
406-455 0   9636 QWEST CORPORATION 648      
406-455 1   9636 QWEST CORPORATION 648      
406-455 2   9636 QWEST CORPORATION 648      
406-455 3   9636 QWEST CORPORATION 648      
406-455 4   9636 QWEST CORPORATION 648      
406-455 5   9636 QWEST CORPORATION 648      
406-455 6   9636 QWEST CORPORATION 648      
406-455 7   247L YORKSTREAM COMMUNICATIONS LLC 648   2025-10-06   
406-455 8   9636 QWEST CORPORATION 648      
406-455 9   9636 QWEST CORPORATION 648      
406-564 A MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-564 0   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2010-09-23   
406-564 1   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2005-06-03   
406-564 2   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2010-10-22   
406-564 3   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2011-02-06   
406-564 4   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-564 5   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2011-03-07   
406-564 6   6010 NEW CINGULAR WIRELESS PCS, LLC 648   2010-11-06   
406-564 7   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2011-04-04   
406-564 8   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2011-06-03   
406-564 9   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2011-07-05   
406-590 A HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-604 A GRFLMTMARS0  7870 BLACKFOOT COMMUNICATIONS, INC. - MT 648      
406-604 0   453F ONVOY, LLC - MT 648   2019-01-22   
406-604 1   453F ONVOY, LLC - MT 648   2019-01-22   
406-604 2   624H ONVOY SPECTRUM, LLC 648   2021-05-22   
406-604 3   624H ONVOY SPECTRUM, LLC 648   2021-05-22   
406-604 4   7870 BLACKFOOT COMMUNICATIONS, INC. - MT 648   2011-09-11   
406-604 5   624H ONVOY SPECTRUM, LLC 648   2021-05-22   
406-604 6   624H ONVOY SPECTRUM, LLC 648   2021-05-22   
406-604 7   508J CENTURYLINK COMMUNICATIONS, LLC 648   2016-02-11   
406-604 8   453F ONVOY, LLC - MT 648   2019-01-22   
406-604 9   073H TELNYX LLC 648   2023-08-25   
406-727 A GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-731 A   700J WAVENATION, LLC 648      
406-731 0   700J WAVENATION, LLC 648   2025-10-05   
406-731 1   9636 QWEST CORPORATION 648      
406-731 2   9636 QWEST CORPORATION 648      
406-731 3   9636 QWEST CORPORATION 648      
406-731 4   9636 QWEST CORPORATION 648      
406-731 5   9636 QWEST CORPORATION 648      
406-731 6   9636 QWEST CORPORATION 648      
406-731 7   9636 QWEST CORPORATION 648      
406-731 8   9636 QWEST CORPORATION 648   2004-07-12   
406-750 A HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-760 A MSSLMTMAGMD  197D VONAGE AMERICA LLC 648      
406-760 0   197D VONAGE AMERICA LLC 648   2018-08-11   
406-760 1   453F ONVOY, LLC - MT 648      
406-760 2   453F ONVOY, LLC - MT 648   2022-11-17   
406-760 4   6529 T-MOBILE USA, INC. 648   2024-07-25   
406-760 8   6529 T-MOBILE USA, INC. 648   2022-02-08   
406-761 A GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-770 A GRFLMTMAUMD  318J COMCAST IP PHONE, LLC 648      
406-770 0   6010 NEW CINGULAR WIRELESS PCS, LLC 648   2016-11-18   
406-770 1   318J COMCAST IP PHONE, LLC 648   2023-06-12   
406-770 2   453F ONVOY, LLC - MT 648   2019-11-18   
406-770 3   792K CHARTER IP ENABLED SERVICES, LLC 648   2008-06-09   
406-770 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 648   2016-08-16   
406-770 5   453F ONVOY, LLC - MT 648   2019-11-18   
406-770 6   771G TELEPORT COMMUNICATIONS AMERICA MT - LLC 648   2013-03-18   
406-770 7   453F ONVOY, LLC - MT 648   2019-11-18   
406-770 8   6010 NEW CINGULAR WIRELESS PCS, LLC 648   2022-09-11   
406-770 9   6010 NEW CINGULAR WIRELESS PCS, LLC 648   2016-06-05   
406-771 A GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-781 A HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-788 A HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-791 A GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-799 A MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-799 0   6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-799 1   6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-799 2   6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-799 3   6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-799 4   6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-799 5   6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-799 6   6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-799 7   6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-799 8   6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-799 9   6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-836 A GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-836 0   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2012-03-29   
406-836 1   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2012-09-13   
406-836 2   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2012-10-15   
406-836 3   453F ONVOY, LLC - MT 648   2023-04-18   
406-836 4   453F ONVOY, LLC - MT 648   2023-08-20   
406-836 5   453F ONVOY, LLC - MT 648   2023-08-20   
406-836 6   453F ONVOY, LLC - MT 648   2024-04-28   
406-836 7   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2013-10-29   
406-836 8   453F ONVOY, LLC - MT 648   2024-04-28   
406-836 9   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2004-09-27   
406-866 A ULM MTMARS1  9636 QWEST CORPORATION 648      
406-866 0   792K CHARTER IP ENABLED SERVICES, LLC 648   2006-03-13   
406-866 1   453F ONVOY, LLC - MT 648   2024-04-28   
406-866 2   9636 QWEST CORPORATION 648      
406-866 3   9636 QWEST CORPORATION 648      
406-866 6   490J DISH WIRELESS, LLC 648   2023-08-21   
406-866 8   6529 T-MOBILE USA, INC. 648   2023-10-23   
406-868 A HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-870 A   994E BANDWIDTH.COM CLEC, LLC - MT 648      

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

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