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Irving, TX

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
972-957 0 DLLSTXJFPS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-957 1   145J TERRA NOVA TELECOM INC. 552   2026-02-05   
972-957 2 DLLSTXJFPS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-957 3 DLLSTXHM0MD  829J PAETEC ITEL, LLC 552   2007-07-25   
972-957 4 DLLSTXJFPS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-957 5 IRNGTXXBXTY  903C ONVOY, LLC - TX 552   2023-01-15   
972-957 6 DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2011-03-25   
972-957 7 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2011-03-21   
972-957 8 IRNGTXXBXQY  624H ONVOY SPECTRUM, LLC 552   2024-12-12   
972-957 9   6529 T-MOBILE USA, INC. 552   2019-07-12   
972-983 A DLLSTXNODS0  7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552      
972-983 0 DLLSTXNODS0  7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552      
972-983 1 FRBRTXBLGT9  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2005-07-04   
972-983 2 FRBRTXBLGT9  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2005-07-04   
972-983 3 FRBRTXBLGT9  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2005-07-04   
972-983 4 FRBRTXBLGT9  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2005-07-04   
972-983 5 FRBRTXBLGT9  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2005-07-04   
972-983 6 FRBRTXBLGT9  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2005-07-04   
972-983 7 FRBRTXBLGT9  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2006-03-10   
972-983 8 FRBRTXBLGT9  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2006-03-10   
972-983 9 FRBRTXBLGT9  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 DLLSTXNODS0  7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2017-04-26   
972-990 1 DLLSTXNODS0  7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2017-04-26   
972-990 2 DLLSTXNODS0  7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2017-04-26   
972-990 3 DLLSTXNODS0  7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2017-04-26   
972-990 4 DLLSTXNODS0  7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2017-04-26   
972-990 5 DLLSTXNODS0  7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2017-04-26   
972-990 6 DLLSTXNODS0  7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2017-04-26   
972-990 7 DLLSTXNODS0  7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2017-04-26   
972-990 8 DLLSTXNODS0  7726 SOUTHWESTERN BELL TELEPHONE COMPANY - TX 552   2017-04-26   
972-990 9 DLLSTXNODS0  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 DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-999 2 DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-999 3 DLLTTX01DMD  5562 METROPCS, INC. 552   2006-01-13   
972-999 4   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-999 5 DLLTTX01DMD  5562 METROPCS, INC. 552   2005-09-29   
972-999 6 DLLTTX01DMD  5562 METROPCS, INC. 552   2005-09-29   
972-999 7 DLLTTX01DMD  5562 METROPCS, INC. 552   2005-09-29   
972-999 8   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-999 9 DLLSTX97X6X  145J TERRA NOVA TELECOM INC. 552   2024-06-27   

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Last updated: Sat, 02 May 2026 12:20:53 UTC

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