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Dallas, TX

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
972-682 8   624H ONVOY SPECTRUM, LLC 552   2021-12-19   
972-682 9   9533 SOUTHWESTERN BELL 552      
972-684 A DLLSTXADDS0  9533 SOUTHWESTERN BELL 552      
972-684 0   5562 METROPCS, INC. 552   2014-03-07   
972-684 1   5562 METROPCS, INC. 552   2014-03-07   
972-684 2   5562 METROPCS, INC. 552   2014-03-07   
972-684 3   5562 METROPCS, INC. 552   2014-03-07   
972-684 4   5562 METROPCS, INC. 552   2014-03-07   
972-684 5   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2014-06-11   
972-684 6   9533 SOUTHWESTERN BELL 552      
972-684 7   9533 SOUTHWESTERN BELL 552      
972-684 8   9533 SOUTHWESTERN BELL 552      
972-684 9   9533 SOUTHWESTERN BELL 552      
972-685 A DLLSTXADDS0  9533 SOUTHWESTERN BELL 552      
972-685 0   793K TWC IP ENABLED SERVICES, LLC 552   2014-03-04   
972-685 1   004F BANDWIDTH.COM CLEC, LLC - TX 552   2019-03-03   
972-685 2   793K TWC IP ENABLED SERVICES, LLC 552   2014-03-04   
972-685 3   793K TWC IP ENABLED SERVICES, LLC 552   2014-03-04   
972-685 4   793K TWC IP ENABLED SERVICES, LLC 552   2014-03-04   
972-685 5   793K TWC IP ENABLED SERVICES, LLC 552   2014-02-24   
972-685 6   793K TWC IP ENABLED SERVICES, LLC 552   2014-02-24   
972-685 7   793K TWC IP ENABLED SERVICES, LLC 552   2014-03-14   
972-685 8   9533 SOUTHWESTERN BELL 552      
972-685 9   793K TWC IP ENABLED SERVICES, LLC 552   2014-03-14   
972-686 A DLLSTXNMDS0  9533 SOUTHWESTERN BELL 552      
972-686 0   9533 SOUTHWESTERN BELL 552      
972-686 1   9533 SOUTHWESTERN BELL 552      
972-686 2   9533 SOUTHWESTERN BELL 552      
972-686 3   9533 SOUTHWESTERN BELL 552      
972-686 4   9533 SOUTHWESTERN BELL 552      
972-686 5   9533 SOUTHWESTERN BELL 552      
972-686 6   9533 SOUTHWESTERN BELL 552      
972-686 7   9533 SOUTHWESTERN BELL 552      
972-686 8   6529 T-MOBILE USA, INC. 552   2025-06-19   
972-686 9   9533 SOUTHWESTERN BELL 552      
972-687 A DLLSTXADDS0  9533 SOUTHWESTERN BELL 552      
972-690 A DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-692 A DLLSTXJFPS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-698 A DLLSTXNMDS0  9533 SOUTHWESTERN BELL 552      
972-698 0   9533 SOUTHWESTERN BELL 552      
972-698 1   9533 SOUTHWESTERN BELL 552      
972-698 2   9533 SOUTHWESTERN BELL 552      
972-698 3   9533 SOUTHWESTERN BELL 552      
972-698 4   004F BANDWIDTH.COM CLEC, LLC - TX 552   2010-10-28   
972-698 5   004F BANDWIDTH.COM CLEC, LLC - TX 552   2010-10-28   
972-698 6   9533 SOUTHWESTERN BELL 552      
972-698 7   7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552   2025-06-30   
972-698 8   9533 SOUTHWESTERN BELL 552      
972-698 9   9533 SOUTHWESTERN BELL 552      
972-699 A DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      

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

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