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: 373

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
972-373 A Dallas TX DLLSTXNODS0  9533 SOUTHWESTERN BELL 552      
972-373 0 Dallas TX DLLSTXNODS0  9533 SOUTHWESTERN BELL 552      
972-373 1 Dallas TX DLLSTXNODS0  9533 SOUTHWESTERN BELL 552      
972-373 2 Dallas TX DLLSTXNODS0  9533 SOUTHWESTERN BELL 552      
972-373 3 Dallas TX DLLSTXNODS0  9533 SOUTHWESTERN BELL 552      
972-373 4 Dallas TX   793K TWC IP ENABLED SERVICES, LLC 552   2015-01-21   
972-373 5 Dallas TX DLLSTXNODS0  9533 SOUTHWESTERN BELL 552      
972-373 6 Dallas TX DLLSTXNODS0  9533 SOUTHWESTERN BELL 552      
972-373 7 Dallas TX DLLSTXNODS0  9533 SOUTHWESTERN BELL 552      
972-373 8 Dallas TX DLLSTXNODS0  9533 SOUTHWESTERN BELL 552      
972-373 9 Dallas TX DLLSTXNODS0  9533 SOUTHWESTERN BELL 552      

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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