Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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OCN: 7516 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
972-894 4 Irving TX DLLFTXFQDS1  552      
972-894 5 Irving TX DLLFTXFQDS1  552      
972-894 6 Irving TX DLLFTXFQDS1  552      
972-894 7 Irving TX DLLFTXFQDS1  552      
972-894 8 Irving TX DLLFTXFQDS1  552      
972-894 9 Irving TX DLLFTXFQDS1  552      
972-905 2 Plano TX DLLFTXFQDS1  552   2011-05-17   
972-966 7 Lewisville TX DLLFTXFQDS1  552   2010-03-19   

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Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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