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Dallas Fort Worth Airport EMS, TX

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
972-425 A DFIATXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-453 A DFIATXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-453 0   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-453 1   177F PEERLESS NETWORK OF TEXAS, LLC - TX 552   2015-11-12   
972-453 2   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-453 3   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-453 4   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-453 5   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-453 6   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-453 7   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-453 8   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-453 9   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-574 A DFIATXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-586 A DFIATXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-586 0   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-586 1   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-586 2   903C ONVOY, LLC - TX 552   2005-11-30   
972-586 3   624H ONVOY SPECTRUM, LLC 552   2022-05-23   
972-586 4   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-586 5   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-586 6   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-586 7   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2005-05-27   
972-586 8   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2005-05-27   
972-586 9   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2005-05-27   
972-615 A DFIATXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-973 A DFIATXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-973 0   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552   2004-11-21   
972-973 1   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552   2004-11-21   
972-973 2   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552   2004-11-21   
972-973 3   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552   2004-11-21   
972-973 4   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552   2004-11-21   
972-973 5   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552   2004-11-21   
972-973 6   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552   2004-11-21   
972-973 7   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552   2004-11-21   
972-973 8   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552   2004-11-21   
972-973 9   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552   2004-11-21   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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