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Irving, TX

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
972-536 6 DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-536 7 DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-536 8 DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-536 9 DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-541 A IRNGTXXEDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-550 A IRNGTXXGDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-554 A IRNGTXXCDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-570 A IRNGTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-573 A IRNGTXXBXTY  903C ONVOY, LLC - TX 552      
972-573 0 IRNGTXXBXTY  903C ONVOY, LLC - TX 552   2005-11-20   
972-573 1 IRNGTXXBXTY  903C ONVOY, LLC - TX 552   2005-11-20   
972-573 2 IRNGTXXBXTY  903C ONVOY, LLC - TX 552   2005-11-20   
972-573 3 IRNGTXXBXTY  903C ONVOY, LLC - TX 552   2005-11-20   
972-573 4 IRNGTXXBXTY  903C ONVOY, LLC - TX 552   2005-11-20   
972-573 5 IRNGTXXBXTY  903C ONVOY, LLC - TX 552   2005-11-20   
972-573 6 IRNGTXXBXTY  903C ONVOY, LLC - TX 552   2005-11-20   
972-573 7 IRNGTXXBXTY  903C ONVOY, LLC - TX 552   2005-11-20   
972-573 8 IRNGTXXBXTY  903C ONVOY, LLC - TX 552   2005-11-20   
972-573 9 IRNGTXXBXTY  903C ONVOY, LLC - TX 552   2005-11-20   
972-579 A IRNGTXXCDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-580 A IRNGTXXGDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-582 A IRNGTXXGDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-592 A DLLSTX97DSS  6630 SPOK, INC. 552      
972-593 A DLLSTX97DSS  6630 SPOK, INC. 552      
972-594 A IRNGTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-594 0 IRNGTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-594 1 IRNGTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-594 2 IRNGTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-594 3 IRNGTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-594 4 IRNGTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-594 5 IRNGTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-594 6 IRNGTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-594 7 IRNGTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-594 8 IRNGTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-594 9 IRNGTXXBXTY  903C ONVOY, LLC - TX 552   2011-03-09   
972-600 A IRNGTXXBXTY  903C ONVOY, LLC - TX 552      
972-600 0 DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2009-03-17   
972-600 1 DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2008-10-07   
972-600 2 IRNGTXXBXTY  903C ONVOY, LLC - TX 552   2007-09-02   
972-600 3 DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2009-02-19   
972-600 4 DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2009-02-19   
972-600 5 DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2009-02-19   
972-600 6 DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2009-02-19   
972-600 7 DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2009-02-19   
972-600 8 IRNGTXXBX0X  793K TWC IP ENABLED SERVICES, LLC 552   2008-03-20   
972-600 9 IRNGTXXBX0X  793K TWC IP ENABLED SERVICES, LLC 552   2008-03-20   
972-607 A IRNGTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-607 0 DLLTTX01DMD  5562 METROPCS, INC. 552   2008-02-24   
972-607 1 IRNGTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-607 2 IRNGTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      

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

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