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: 671

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
972-671 A Dallas TX DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-671 0 Dallas TX DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-671 1 Dallas TX DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-671 2 Dallas TX DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-671 3 Dallas TX DLLSTXTAXTZ  624H ONVOY SPECTRUM, LLC 552   2021-12-19   
972-671 4 Dallas TX DLLSTXTAXTZ  624H ONVOY SPECTRUM, LLC 552   2021-12-19   
972-671 5 Dallas TX DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-671 6 Dallas TX DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-671 7 Dallas TX DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-671 8 Dallas TX DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      
972-671 9 Dallas TX DLLSTXRNDS0  9533 SOUTHWESTERN BELL 552      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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