Local Calling Guide

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Dallas, TX

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
972-458 0   9533 SOUTHWESTERN BELL 552      
972-458 1   9533 SOUTHWESTERN BELL 552      
972-458 2   9533 SOUTHWESTERN BELL 552      
972-458 3   9533 SOUTHWESTERN BELL 552      
972-458 4   9533 SOUTHWESTERN BELL 552      
972-458 5   9533 SOUTHWESTERN BELL 552      
972-458 6   9533 SOUTHWESTERN BELL 552      
972-458 7   9533 SOUTHWESTERN BELL 552      
972-458 8   9533 SOUTHWESTERN BELL 552      
972-458 9   6529 T-MOBILE USA, INC. 552   2025-06-11   
972-470 A DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-470 0   9533 SOUTHWESTERN BELL 552      
972-470 1   9533 SOUTHWESTERN BELL 552      
972-470 2   9533 SOUTHWESTERN BELL 552      
972-470 3   9533 SOUTHWESTERN BELL 552      
972-470 4   9533 SOUTHWESTERN BELL 552      
972-470 5   9533 SOUTHWESTERN BELL 552      
972-470 6   624H ONVOY SPECTRUM, LLC 552   2021-05-22   
972-470 7   9533 SOUTHWESTERN BELL 552      
972-470 8   9533 SOUTHWESTERN BELL 552      
972-470 9   9533 SOUTHWESTERN BELL 552      
972-479 A DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-479 0   9533 SOUTHWESTERN BELL 552      
972-479 1   9533 SOUTHWESTERN BELL 552      
972-479 2   9533 SOUTHWESTERN BELL 552      
972-479 3   9533 SOUTHWESTERN BELL 552      
972-479 4   9533 SOUTHWESTERN BELL 552      
972-479 5   903C ONVOY, LLC - TX 552   2011-07-11   
972-479 6   9533 SOUTHWESTERN BELL 552      
972-479 7   9533 SOUTHWESTERN BELL 552      
972-479 8   9533 SOUTHWESTERN BELL 552      
972-479 9   9533 SOUTHWESTERN BELL 552      
972-480 A DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-480 0   9533 SOUTHWESTERN BELL 552      
972-480 1   5562 METROPCS, INC. 552   2007-07-22   
972-480 2   5562 METROPCS, INC. 552   2007-07-22   
972-480 3   903C ONVOY, LLC - TX 552   2008-04-20   
972-480 4   5562 METROPCS, INC. 552   2007-07-22   
972-480 5   9533 SOUTHWESTERN BELL 552      
972-480 6   903C ONVOY, LLC - TX 552   2008-04-20   
972-480 7   5562 METROPCS, INC. 552   2007-07-22   
972-480 8   9533 SOUTHWESTERN BELL 552      
972-480 9   9533 SOUTHWESTERN BELL 552      
972-481 A DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
972-481 0   5562 METROPCS, INC. 552   2010-03-01   
972-481 1   9533 SOUTHWESTERN BELL 552      
972-481 2   9533 SOUTHWESTERN BELL 552      
972-481 3   9533 SOUTHWESTERN BELL 552      
972-481 4   5562 METROPCS, INC. 552   2010-03-01   
972-481 5   9533 SOUTHWESTERN BELL 552      
972-481 6   9533 SOUTHWESTERN BELL 552      
972-481 7   9533 SOUTHWESTERN BELL 552      
972-481 8   9533 SOUTHWESTERN BELL 552      
972-481 9   9533 SOUTHWESTERN BELL 552      
972-484 A DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
972-488 A DLLSTXFBDS0  9533 SOUTHWESTERN BELL 552      
972-488 0   9533 SOUTHWESTERN BELL 552      
972-488 1   9533 SOUTHWESTERN BELL 552      
972-488 2   9533 SOUTHWESTERN BELL 552      
972-488 3   9533 SOUTHWESTERN BELL 552      
972-488 4   9533 SOUTHWESTERN BELL 552      
972-488 5   9533 SOUTHWESTERN BELL 552      
972-488 6   9533 SOUTHWESTERN BELL 552      
972-488 7   9533 SOUTHWESTERN BELL 552      
972-488 8   9533 SOUTHWESTERN BELL 552      
972-488 9   6529 T-MOBILE USA, INC. 552   2025-06-11   
972-490 A DLLSTXADDS1  9533 SOUTHWESTERN BELL 552      
972-497 A DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-497 0   9533 SOUTHWESTERN BELL 552      
972-497 1   9533 SOUTHWESTERN BELL 552      
972-497 2   177F PEERLESS NETWORK OF TEXAS, LLC - TX 552   2012-04-06   
972-497 3   9533 SOUTHWESTERN BELL 552      
972-497 4   7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552   2012-01-16   
972-497 5   9533 SOUTHWESTERN BELL 552      
972-497 6   9533 SOUTHWESTERN BELL 552      
972-497 7   9533 SOUTHWESTERN BELL 552      
972-497 8   9533 SOUTHWESTERN BELL 552      
972-497 9   9533 SOUTHWESTERN BELL 552      
972-498 A DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-498 0   9533 SOUTHWESTERN BELL 552      
972-498 1   903C ONVOY, LLC - TX 552   2008-04-25   
972-498 2   9533 SOUTHWESTERN BELL 552      
972-498 3   9533 SOUTHWESTERN BELL 552      
972-498 4   9533 SOUTHWESTERN BELL 552      
972-498 5   9533 SOUTHWESTERN BELL 552      
972-498 6   9533 SOUTHWESTERN BELL 552      
972-498 7   9533 SOUTHWESTERN BELL 552      
972-498 8   9533 SOUTHWESTERN BELL 552      
972-498 9   9533 SOUTHWESTERN BELL 552      
972-499 A   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-499 0   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-499 1   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-499 2   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-499 3   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-499 4   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2004-04-09   
972-499 5   004F BANDWIDTH.COM CLEC, LLC - TX 552   2010-06-17   
972-499 6   903C ONVOY, LLC - TX 552   2008-04-25   
972-499 7   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-499 8   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-499 9   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      

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

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