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Dallas, TX

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
972-308 7   9533 SOUTHWESTERN BELL 552      
972-308 8   9533 SOUTHWESTERN BELL 552      
972-308 9   9533 SOUTHWESTERN BELL 552      
972-328 A   128L E. RITTER COMMUNICATIONS, LLC 552   2026-02-19   
972-328 1   128L E. RITTER COMMUNICATIONS, LLC 552   2026-02-19   
972-329 A DLLSTXMSDS0  9533 SOUTHWESTERN BELL 552      
972-331 A   903C ONVOY, LLC - TX 552      
972-338 A DLLSTXADDS0  9533 SOUTHWESTERN BELL 552      
972-338 0   5562 METROPCS, INC. 552   2011-03-24   
972-338 1   9533 SOUTHWESTERN BELL 552      
972-338 2   829J PAETEC ITEL, LLC 552   2012-02-17   
972-338 3   829J PAETEC ITEL, LLC 552   2012-02-17   
972-338 4   004F BANDWIDTH.COM CLEC, LLC - TX 552   2011-02-25   
972-338 5   004F BANDWIDTH.COM CLEC, LLC - TX 552   2011-02-25   
972-338 6   9533 SOUTHWESTERN BELL 552      
972-338 7   9533 SOUTHWESTERN BELL 552      
972-338 8   9533 SOUTHWESTERN BELL 552      
972-338 9   903C ONVOY, LLC - TX 552   2011-06-17   
972-340 A DLLSTXADDS0  9533 SOUTHWESTERN BELL 552      
972-341 A DLLSTXADDS0  9533 SOUTHWESTERN BELL 552      
972-341 0   9533 SOUTHWESTERN BELL 552      
972-341 1   9533 SOUTHWESTERN BELL 552      
972-341 2   9533 SOUTHWESTERN BELL 552      
972-341 3   9533 SOUTHWESTERN BELL 552      
972-341 4   5562 METROPCS, INC. 552   2011-01-17   
972-341 5   9533 SOUTHWESTERN BELL 552      
972-341 6   9533 SOUTHWESTERN BELL 552      
972-341 7   5562 METROPCS, INC. 552   2010-03-01   
972-341 8   9533 SOUTHWESTERN BELL 552      
972-341 9   9533 SOUTHWESTERN BELL 552      
972-344 A DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-348 A DLLSTXEMDS0  9533 SOUTHWESTERN BELL 552      
972-348 0   004F BANDWIDTH.COM CLEC, LLC - TX 552   2010-06-17   
972-348 1   9533 SOUTHWESTERN BELL 552      
972-348 2   9533 SOUTHWESTERN BELL 552      
972-348 3   9533 SOUTHWESTERN BELL 552      
972-348 4   516C AT&T CORP. 552   2017-01-08   
972-348 5   829J PAETEC ITEL, LLC 552   2013-02-13   
972-348 6   9533 SOUTHWESTERN BELL 552      
972-348 7   9533 SOUTHWESTERN BELL 552      
972-348 8   5562 METROPCS, INC. 552   2011-03-24   
972-348 9   6529 T-MOBILE USA, INC. 552   2025-06-11   
972-349 A DLLSTXEMDS0  9533 SOUTHWESTERN BELL 552      
972-349 0   004F BANDWIDTH.COM CLEC, LLC - TX 552   2010-06-17   
972-349 1   004F BANDWIDTH.COM CLEC, LLC - TX 552   2012-02-24   
972-349 2   9533 SOUTHWESTERN BELL 552      
972-349 3   9533 SOUTHWESTERN BELL 552      
972-349 4   829J PAETEC ITEL, LLC 552   2016-12-26   
972-349 5   9533 SOUTHWESTERN BELL 552      
972-349 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2012-01-30   

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

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