Local Calling Guide

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Dallas, TX

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
972-699 0   9533 SOUTHWESTERN BELL 552      
972-699 1   9533 SOUTHWESTERN BELL 552      
972-699 2   9533 SOUTHWESTERN BELL 552      
972-699 3   9533 SOUTHWESTERN BELL 552      
972-699 4   9533 SOUTHWESTERN BELL 552      
972-699 5   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2010-11-03   
972-699 6   9533 SOUTHWESTERN BELL 552      
972-699 7   9533 SOUTHWESTERN BELL 552      
972-699 8   9533 SOUTHWESTERN BELL 552      
972-699 9   9533 SOUTHWESTERN BELL 552      
972-701 A DLLSTXADDS0  9533 SOUTHWESTERN BELL 552      
972-701 0   9533 SOUTHWESTERN BELL 552      
972-701 1   9533 SOUTHWESTERN BELL 552      
972-701 2   9533 SOUTHWESTERN BELL 552      
972-701 3   9533 SOUTHWESTERN BELL 552      
972-701 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2012-08-16   
972-701 5   9533 SOUTHWESTERN BELL 552      
972-701 6   9533 SOUTHWESTERN BELL 552      
972-701 7   9533 SOUTHWESTERN BELL 552      
972-701 8   9533 SOUTHWESTERN BELL 552      
972-701 9   9533 SOUTHWESTERN BELL 552      
972-702 A DLLSTXADDS0  9533 SOUTHWESTERN BELL 552      
972-702 0   9533 SOUTHWESTERN BELL 552      
972-702 1   9533 SOUTHWESTERN BELL 552      
972-702 2   9533 SOUTHWESTERN BELL 552      
972-702 3   9533 SOUTHWESTERN BELL 552      
972-702 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2010-11-03   
972-702 5   9533 SOUTHWESTERN BELL 552      
972-702 6   9533 SOUTHWESTERN BELL 552      
972-702 7   9533 SOUTHWESTERN BELL 552      
972-702 8   9533 SOUTHWESTERN BELL 552      
972-702 9   9533 SOUTHWESTERN BELL 552      
972-705 A DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-705 0   9533 SOUTHWESTERN BELL 552      
972-705 1   9533 SOUTHWESTERN BELL 552      
972-705 2   9533 SOUTHWESTERN BELL 552      
972-705 3   9533 SOUTHWESTERN BELL 552      
972-705 4   9533 SOUTHWESTERN BELL 552      
972-705 5   9533 SOUTHWESTERN BELL 552      
972-705 6   9533 SOUTHWESTERN BELL 552      
972-705 7   6529 T-MOBILE USA, INC. 552   2025-06-19   
972-705 8   9533 SOUTHWESTERN BELL 552      
972-705 9   9533 SOUTHWESTERN BELL 552      
972-706 A DLLSTXNODS0  9533 SOUTHWESTERN BELL 552      
972-707 A DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552      
972-707 0   793K TWC IP ENABLED SERVICES, LLC 552   2012-02-16   
972-707 1   903C ONVOY, LLC - TX 552   2011-08-03   
972-707 2   903C ONVOY, LLC - TX 552   2011-08-03   
972-707 3   903C ONVOY, LLC - TX 552   2011-11-04   
972-707 4   903C ONVOY, LLC - TX 552   2011-11-04   

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

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