Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 972 [Rate centres in NPA 972] [Dial plan for NPA 972]

NXX: 638

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
972-638 A Dallas TX DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-638 0 Dallas TX DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2012-08-16   
972-638 1 Dallas TX DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-638 2 Dallas TX DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-638 3 Dallas TX DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-638 4 Dallas TX DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-638 5 Dallas TX DLLSTXHM4MD  7982 CAPROCK TELECOMMUNICATIONS CORP. - TX 552   2010-09-20   
972-638 6 Dallas TX DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-638 7 Dallas TX DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2010-10-28   
972-638 8 Dallas TX DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2011-01-15   
972-638 9 Dallas TX DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2012-08-16   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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