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Dallas, TX

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
972-501 A DLLSTXNODS0  9533 SOUTHWESTERN BELL 552      
972-502 A DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-502 0   5562 METROPCS, INC. 552   2012-02-23   
972-502 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-502 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-502 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-502 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-502 5   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-502 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-502 7   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-502 8   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-502 9   177F PEERLESS NETWORK OF TEXAS, LLC - TX 552   2012-04-06   
972-503 A DLLSTXADDS0  9533 SOUTHWESTERN BELL 552      
972-503 0   9533 SOUTHWESTERN BELL 552      
972-503 1   9533 SOUTHWESTERN BELL 552      
972-503 2   5562 METROPCS, INC. 552   2018-05-25   
972-503 3   9533 SOUTHWESTERN BELL 552      
972-503 4   004F BANDWIDTH.COM CLEC, LLC - TX 552   2014-10-18   
972-503 5   5562 METROPCS, INC. 552   2019-07-18   
972-503 6   004F BANDWIDTH.COM CLEC, LLC - TX 552   2018-07-15   
972-503 7   9533 SOUTHWESTERN BELL 552      
972-503 8   903C ONVOY, LLC - TX 552   2016-02-15   
972-503 9   004F BANDWIDTH.COM CLEC, LLC - TX 552   2018-07-15   
972-506 A DLLSTXNODS0  9533 SOUTHWESTERN BELL 552      
972-528 A DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-528 0   004F BANDWIDTH.COM CLEC, LLC - TX 552   2010-06-17   
972-528 1   9533 SOUTHWESTERN BELL 552      
972-528 2   9533 SOUTHWESTERN BELL 552      
972-528 3   9533 SOUTHWESTERN BELL 552      
972-528 4   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2011-06-19   
972-528 5   903C ONVOY, LLC - TX 552   2011-04-22   
972-528 6   903C ONVOY, LLC - TX 552   2010-04-10   
972-528 7   177F PEERLESS NETWORK OF TEXAS, LLC - TX 552   2012-04-06   
972-528 8   004F BANDWIDTH.COM CLEC, LLC - TX 552   2010-06-17   
972-528 9   004F BANDWIDTH.COM CLEC, LLC - TX 552   2010-06-17   
972-532 A DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-532 0   004F BANDWIDTH.COM CLEC, LLC - TX 552   2011-05-22   
972-532 1   004F BANDWIDTH.COM CLEC, LLC - TX 552   2011-05-22   
972-532 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-532 3   004F BANDWIDTH.COM CLEC, LLC - TX 552   2011-05-22   
972-532 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-532 5   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2009-07-16   
972-532 6   004F BANDWIDTH.COM CLEC, LLC - TX 552   2011-05-22   
972-532 7   004F BANDWIDTH.COM CLEC, LLC - TX 552   2010-06-17   
972-532 8   903C ONVOY, LLC - TX 552   2004-11-11   
972-532 9   004F BANDWIDTH.COM CLEC, LLC - TX 552   2011-05-22   
972-546 A   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-546 0   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-546 1   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-546 2   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-546 3   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-546 4   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-546 5   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-546 6   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-546 7   903C ONVOY, LLC - TX 552   2009-10-05   
972-546 8   6529 T-MOBILE USA, INC. 552   2025-06-11   
972-546 9   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-556 A DLLSTXNODS0  9533 SOUTHWESTERN BELL 552      
972-556 0   9533 SOUTHWESTERN BELL 552      
972-556 1   9533 SOUTHWESTERN BELL 552      
972-556 2   9533 SOUTHWESTERN BELL 552      
972-556 3   9533 SOUTHWESTERN BELL 552      
972-556 4   9533 SOUTHWESTERN BELL 552      
972-556 5   004F BANDWIDTH.COM CLEC, LLC - TX 552   2010-06-17   
972-556 6   9533 SOUTHWESTERN BELL 552      
972-556 7   9533 SOUTHWESTERN BELL 552      
972-556 8   9533 SOUTHWESTERN BELL 552      
972-556 9   9533 SOUTHWESTERN BELL 552      
972-557 A DLLSTXRYDS0  9533 SOUTHWESTERN BELL 552      
972-559 A DLLSTXFLDS0  9533 SOUTHWESTERN BELL 552      
972-559 0   004F BANDWIDTH.COM CLEC, LLC - TX 552   2010-06-17   
972-559 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2005-11-06   
972-559 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2005-11-06   
972-559 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2005-11-06   
972-559 4   004F BANDWIDTH.COM CLEC, LLC - TX 552   2011-04-28   
972-559 5   9533 SOUTHWESTERN BELL 552      
972-559 6   9533 SOUTHWESTERN BELL 552      
972-559 7   9533 SOUTHWESTERN BELL 552      
972-559 8   903C ONVOY, LLC - TX 552   2009-10-05   
972-559 9   004F BANDWIDTH.COM CLEC, LLC - TX 552   2010-06-17   
972-560 A DLLSTXJFPS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-566 A DLLSTXEMDS0  9533 SOUTHWESTERN BELL 552      
972-572 A DLLSTXDVDS0  9533 SOUTHWESTERN BELL 552      
972-572 0   9533 SOUTHWESTERN BELL 552      
972-572 1   9533 SOUTHWESTERN BELL 552      
972-572 2   9533 SOUTHWESTERN BELL 552      
972-572 3   9533 SOUTHWESTERN BELL 552      
972-572 4   9533 SOUTHWESTERN BELL 552      
972-572 5   9533 SOUTHWESTERN BELL 552      
972-572 6   6529 T-MOBILE USA, INC. 552   2025-06-11   
972-572 7   9533 SOUTHWESTERN BELL 552      
972-572 8   9533 SOUTHWESTERN BELL 552      
972-572 9   9533 SOUTHWESTERN BELL 552      
972-581 A DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-581 0   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-581 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-581 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-581 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-581 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-581 5   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      

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

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