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   552      
972-894 5 Irving TX   552      
972-894 6 Irving TX   552      
972-894 7 Irving TX   552      
972-894 8 Irving TX   552      
972-894 9 Irving TX   552      
972-905 2 Plano TX   552   2011-05-17   
972-966 7 Lewisville TX   552   2010-03-19   

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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