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Irving, TX

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
972-887 7   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-887 8   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-887 9   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-891 A DLLSTXJFPS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-891 0   5562 METROPCS, INC. 552   2005-12-15   
972-891 1   5562 METROPCS, INC. 552   2005-12-15   
972-891 2   5562 METROPCS, INC. 552   2005-12-15   
972-891 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-891 4   5562 METROPCS, INC. 552   2005-12-15   
972-891 5   5562 METROPCS, INC. 552   2005-12-15   
972-891 6   7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2010-10-12   
972-891 7   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2007-04-25   
972-891 8   004F BANDWIDTH.COM CLEC, LLC - TX 552   2010-10-28   
972-891 9   004F BANDWIDTH.COM CLEC, LLC - TX 552   2010-03-11   
972-893 A IRNGTXXEDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-893 0   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-893 1   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2007-10-04   
972-893 2   829J PAETEC ITEL, LLC 552   2011-01-20   
972-893 3   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2010-11-29   
972-893 4   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-893 5   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-893 6   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 552   2010-04-01   
972-893 7   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-893 8   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 552   2007-12-01   
972-893 9   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2011-04-30   
972-894 A DLLFTXFQDS1  7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 552      
972-894 0   7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 552      
972-894 1   7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 552      
972-894 2   7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 552      
972-894 3   7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 552   2010-03-07   
972-894 4   7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 552      
972-894 5   7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 552      
972-894 6   7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 552      
972-894 7   7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 552      
972-894 8   7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 552      
972-894 9   7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 552      
972-915 A IRNGTXXFDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-929 A IRNGTXXFDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-957 A DLLSTXJFPS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-957 0   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-957 1   145J TERRA NOVA TELECOM INC. 552   2026-02-05   
972-957 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-957 3   829J PAETEC ITEL, LLC 552   2007-07-25   
972-957 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-957 5   903C ONVOY, LLC - TX 552   2023-01-15   
972-957 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2011-03-25   
972-957 7   004F BANDWIDTH.COM CLEC, LLC - TX 552   2011-03-21   
972-957 8   624H ONVOY SPECTRUM, LLC 552   2024-12-12   
972-957 9   5562 METROPCS, INC. 552   2019-07-12   
972-983 A DLLSTXNODS0  7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552      
972-983 0   7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552      
972-983 1   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2005-07-04   
972-983 2   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2005-07-04   
972-983 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2005-07-04   
972-983 4   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2005-07-04   
972-983 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2005-07-04   
972-983 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2005-07-04   
972-983 7   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2006-03-10   
972-983 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2006-03-10   
972-983 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2006-03-10   
972-986 A IRNGTXXDDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
972-990 A DLLSTXNODS0  7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552      
972-990 0   7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2017-04-26   
972-990 1   7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2017-04-26   
972-990 2   7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2017-04-26   
972-990 3   7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2017-04-26   
972-990 4   7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2017-04-26   
972-990 5   7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2017-04-26   
972-990 6   7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2017-04-26   
972-990 7   7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2017-04-26   
972-990 8   7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2017-04-26   
972-990 9   7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2017-04-26   
972-999 A   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-999 0   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-999 1   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-999 2   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-999 3   5562 METROPCS, INC. 552   2006-01-13   
972-999 4   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-999 5   5562 METROPCS, INC. 552   2005-09-29   
972-999 6   5562 METROPCS, INC. 552   2005-09-29   
972-999 7   5562 METROPCS, INC. 552   2005-09-29   
972-999 8   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-999 9   145J TERRA NOVA TELECOM INC. 552   2024-06-27   

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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