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Great Falls, MT

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
406-453 A GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-454 A GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-455 A GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-455 0 GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-455 1 GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-455 2 GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-455 3 GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-455 4 GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-455 5 GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-455 6 GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-455 8 GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-455 9 GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-564 A MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-564 0 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2010-09-23   
406-564 1 MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2005-06-03   
406-564 2 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2010-10-22   
406-564 3 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2011-02-06   
406-564 4 MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-564 5 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2011-03-07   
406-564 6 MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648   2010-11-06   
406-564 7 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2011-04-04   
406-564 8 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2011-06-03   
406-564 9 HLNAMTMAX1X  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 GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-01-22   
406-604 1 GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-01-22   
406-604 2 GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2021-05-22   
406-604 3 GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2021-05-22   
406-604 4 GRFLMTMARS0  7870 BLACKFOOT COMMUNICATIONS, INC. - MT 648   2011-09-11   
406-604 5 GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2021-05-22   
406-604 6 GRFLMTMAKMD  624H ONVOY SPECTRUM, LLC 648   2021-05-22   
406-604 7 HLNAMTMAUMD  508J CENTURYLINK COMMUNICATIONS, LLC 648   2016-02-11   
406-604 8 GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-01-22   
406-604 9 GRFLMTMAHMD  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 GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-731 2 GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-731 3 GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-731 4 GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-731 5 GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-731 6 GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-731 7 GRFLMTMADS0  9636 QWEST CORPORATION 648      
406-731 8 GRFLMTMADS0  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 MSSLMTMAGMD  197D VONAGE AMERICA LLC 648   2018-08-11   
406-760 1 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      

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Last updated: Sun, 17 May 2026 03:26:51 UTC

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