Local Calling Guide

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Dallas, TX

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
972-866 8   9533 SOUTHWESTERN BELL 552      
972-866 9   9533 SOUTHWESTERN BELL 552      
972-868 A DLLSTXNODS0  9533 SOUTHWESTERN BELL 552      
972-869 A DLLSTXNODS0  9533 SOUTHWESTERN BELL 552      
972-882 A DLLSTXMSDS0  9533 SOUTHWESTERN BELL 552      
972-882 0   9533 SOUTHWESTERN BELL 552      
972-882 1   9533 SOUTHWESTERN BELL 552      
972-882 2   9533 SOUTHWESTERN BELL 552      
972-882 3   9533 SOUTHWESTERN BELL 552      
972-882 4   9533 SOUTHWESTERN BELL 552      
972-882 5   9533 SOUTHWESTERN BELL 552      
972-882 6   004F BANDWIDTH.COM CLEC, LLC - TX 552   2010-11-15   
972-882 7   9533 SOUTHWESTERN BELL 552      
972-882 8   9533 SOUTHWESTERN BELL 552      
972-882 9   903C ONVOY, LLC - TX 552   2016-02-15   
972-883 A DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-884 A DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
972-884 0   004F BANDWIDTH.COM CLEC, LLC - TX 552   2010-11-15   
972-884 1   9533 SOUTHWESTERN BELL 552      
972-884 2   9533 SOUTHWESTERN BELL 552      
972-884 3   9533 SOUTHWESTERN BELL 552      
972-884 4   903C ONVOY, LLC - TX 552   2010-07-12   
972-884 5   903C ONVOY, LLC - TX 552   2010-07-12   
972-884 6   9533 SOUTHWESTERN BELL 552      
972-884 7   9533 SOUTHWESTERN BELL 552      
972-884 8   9533 SOUTHWESTERN BELL 552      
972-884 9   9533 SOUTHWESTERN BELL 552      
972-885 A DLLSTXTAXMZ  551G NUSO, LLC 552      
972-885 0   004F BANDWIDTH.COM CLEC, LLC - TX 552   2013-03-07   
972-885 1   551G NUSO, LLC 552   2012-12-17   
972-885 2   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2013-02-16   
972-885 3   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2013-02-16   
972-885 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2012-12-31   
972-885 5   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2013-02-16   
972-885 6   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2013-02-16   
972-885 7   004F BANDWIDTH.COM CLEC, LLC - TX 552   2013-03-07   
972-885 8   004F BANDWIDTH.COM CLEC, LLC - TX 552   2013-03-07   
972-885 9   004F BANDWIDTH.COM CLEC, LLC - TX 552   2013-03-07   
972-888 A DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
972-889 A DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-889 0   9533 SOUTHWESTERN BELL 552      
972-889 1   9533 SOUTHWESTERN BELL 552      
972-889 2   9533 SOUTHWESTERN BELL 552      
972-889 3   9533 SOUTHWESTERN BELL 552      
972-889 4   9533 SOUTHWESTERN BELL 552      
972-889 5   9533 SOUTHWESTERN BELL 552      
972-889 6   9533 SOUTHWESTERN BELL 552      
972-889 7   829J PAETEC ITEL, LLC 552   2012-08-27   
972-889 8   9533 SOUTHWESTERN BELL 552      
972-889 9   004F BANDWIDTH.COM CLEC, LLC - TX 552   2018-07-15   

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

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