Local Calling Guide

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Crandall EMS, TX

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
972-427 A DLLSTXSEDS0  9533 SOUTHWESTERN BELL 552      
972-427 0 DLLSTXSEDS0  9533 SOUTHWESTERN BELL 552      
972-427 1 DLLSTX97DSS  177F PEERLESS NETWORK OF TEXAS, LLC - TX 552   2013-04-21   
972-427 2 DLLSTXALDS4  903C ONVOY, LLC - TX 552   2013-12-09   
972-427 3 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2015-06-28   
972-427 4 DLLSTXJFDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 552   2003-07-16   
972-427 5 DLLSTXALDS4  903C ONVOY, LLC - TX 552   2006-07-03   
972-427 6 DLLSTXSEDS0  9533 SOUTHWESTERN BELL 552      
972-427 7 DLLSTXALDS4  903C ONVOY, LLC - TX 552   2013-12-09   
972-427 8 DLLSTXSEDS0  9533 SOUTHWESTERN BELL 552      
972-427 9 DLLSTXSEDS0  9533 SOUTHWESTERN BELL 552      

Last updated: Sat, 02 May 2026 12:20:53 UTC

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