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Irving, TX

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
972-657 8 IRNGTXXEDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-657 9 IRNGTXXEDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-659 A IRNGTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-714 A IRNGTXXGDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-717 A IRNGTXXEDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-719 A IRNGTXXEDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-721 A IRNGTXXCDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-746 A DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-746 0 DLLTTX01DMD  6529 T-MOBILE USA, INC. 552   2004-10-04   
972-746 1 DLLTTX01DMD  6529 T-MOBILE USA, INC. 552   2004-10-04   
972-746 2 DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2004-06-15   
972-746 3 DLLTTX01DMD  6529 T-MOBILE USA, INC. 552   2004-04-27   
972-746 4 DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-746 5 DLLTTX01DMD  6529 T-MOBILE USA, INC. 552   2004-04-09   
972-746 6 DLLTTX01DMD  6529 T-MOBILE USA, INC. 552   2004-03-15   
972-746 7 DLLTTX01DMD  6529 T-MOBILE USA, INC. 552   2004-03-15   
972-746 8 DLLTTX01DMD  6529 T-MOBILE USA, INC. 552   2004-02-16   
972-746 9 DLLTTX01DMD  6529 T-MOBILE USA, INC. 552   2004-02-16   
972-753 A IRNGTXXGDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-756 A IRNGTXXGDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-785 A IRNGTXXCDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-785 0 IRNGTXXCDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-785 1 IRNGTXXCDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-785 2 IRNGTXXCDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-785 3 IRNGTXXCDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-785 4 FTWOTXEDX1Z  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
972-785 5 IRNGTXXCDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-785 6 IRNGTXXCDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-785 7 DLLTTX01DMD  6529 T-MOBILE USA, INC. 552   2007-03-19   
972-785 8 IRNGTXXCDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-785 9 IRNGTXXCDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-786 A DLLFTXFQDS1  7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 552      
972-786 0 DLLFTXFQDS1  7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 552      
972-786 1 DLLTTX01DMD  6529 T-MOBILE USA, INC. 552   2006-03-26   
972-786 2 DLLTTX01DMD  6529 T-MOBILE USA, INC. 552   2005-06-01   
972-786 3 DLLTTX01DMD  6529 T-MOBILE USA, INC. 552   2004-11-19   
972-786 4 DLLTTX01DMD  6529 T-MOBILE USA, INC. 552   2004-11-19   
972-786 5 DLLTTX01DMD  6529 T-MOBILE USA, INC. 552   2004-11-19   
972-786 6 DLLTTX01DMD  6529 T-MOBILE USA, INC. 552   2004-10-04   
972-786 7 DLLFTXFQDS1  7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 552      
972-786 8 DLLFTXFQDS1  7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 552      
972-786 9 DLLFTXFQDS1  7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 552      
972-790 A IRNGTXXDDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-793 A DLLSTXJFPS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-793 0 DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2011-04-30   
972-793 1 DLLSTXJFPS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-793 2 DLLTTX01DMD  6529 T-MOBILE USA, INC. 552   2007-07-19   
972-793 3 DLLTTX01DMD  6529 T-MOBILE USA, INC. 552   2007-07-19   
972-793 4 DLLTTX01DMD  6529 T-MOBILE USA, INC. 552   2007-07-19   
972-793 5 DLLSTXJFPS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      

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Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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