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Dallas, TX

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
972-349 7   9533 SOUTHWESTERN BELL 552      
972-349 8   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2012-01-30   
972-349 9   516C AT&T CORP. 552   2011-07-08   
972-354 A DLLSTXHW6MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 552      
972-361 A DLLSTXADDS0  9533 SOUTHWESTERN BELL 552      
972-362 A DLLSTXADDS0  9533 SOUTHWESTERN BELL 552      
972-362 0   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2014-05-12   
972-362 1   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2014-05-12   
972-362 2   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2014-05-12   
972-362 3   9533 SOUTHWESTERN BELL 552      
972-362 4   903C ONVOY, LLC - TX 552   2014-10-18   
972-362 5   004F BANDWIDTH.COM CLEC, LLC - TX 552   2014-10-18   
972-362 6   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2014-05-12   
972-362 7   9533 SOUTHWESTERN BELL 552      
972-362 8   903C ONVOY, LLC - TX 552   2014-04-04   
972-362 9   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2014-05-12   
972-364 A DLLSTXADDS0  9533 SOUTHWESTERN BELL 552      
972-364 0   9533 SOUTHWESTERN BELL 552      
972-364 1   177F PEERLESS NETWORK OF TEXAS, LLC - TX 552   2012-04-06   
972-364 2   9533 SOUTHWESTERN BELL 552      
972-364 3   9533 SOUTHWESTERN BELL 552      
972-364 4   9533 SOUTHWESTERN BELL 552      
972-364 5   9533 SOUTHWESTERN BELL 552      
972-364 6   9533 SOUTHWESTERN BELL 552      
972-364 7   004F BANDWIDTH.COM CLEC, LLC - TX 552   2010-06-17   
972-364 8   9533 SOUTHWESTERN BELL 552      
972-364 9   9533 SOUTHWESTERN BELL 552      
972-367 A DLLSTXJFPS1  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-368 A DLLSTXNODS0  9533 SOUTHWESTERN BELL 552      
972-371 A DLLSTXADDS0  9533 SOUTHWESTERN BELL 552      
972-371 0   004F BANDWIDTH.COM CLEC, LLC - TX 552   2018-04-07   
972-371 1   9533 SOUTHWESTERN BELL 552      
972-371 2   9533 SOUTHWESTERN BELL 552      
972-371 3   9533 SOUTHWESTERN BELL 552      
972-371 4   9533 SOUTHWESTERN BELL 552      
972-371 5   9533 SOUTHWESTERN BELL 552      
972-371 6   9533 SOUTHWESTERN BELL 552      
972-371 7   5562 METROPCS, INC. 552   2015-01-28   
972-371 8   5562 METROPCS, INC. 552   2011-03-24   
972-371 9   5562 METROPCS, INC. 552   2011-03-24   
972-373 A DLLSTXNODS0  9533 SOUTHWESTERN BELL 552      
972-373 0   9533 SOUTHWESTERN BELL 552      
972-373 1   9533 SOUTHWESTERN BELL 552      
972-373 2   9533 SOUTHWESTERN BELL 552      
972-373 3   9533 SOUTHWESTERN BELL 552      
972-373 4   793K TWC IP ENABLED SERVICES, LLC 552   2015-01-21   
972-373 5   9533 SOUTHWESTERN BELL 552      
972-373 6   9533 SOUTHWESTERN BELL 552      
972-373 7   9533 SOUTHWESTERN BELL 552      
972-373 8   9533 SOUTHWESTERN BELL 552      

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

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