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: 823

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
972-823 A Irving TX   903C ONVOY, LLC - TX 552      
972-823 0 Irving TX   624H ONVOY SPECTRUM, LLC 552   2025-10-20   
972-823 1 Irving TX   903C ONVOY, LLC - TX 552      
972-823 3 Irving TX   903C ONVOY, LLC - TX 552      
972-823 4 Irving TX   624H ONVOY SPECTRUM, LLC 552   2025-10-20   
972-823 5 Irving TX   903C ONVOY, LLC - TX 552      
972-823 7 Irving TX   624H ONVOY SPECTRUM, LLC 552   2025-10-20   
972-823 8 Irving TX   624H ONVOY SPECTRUM, LLC 552   2025-10-20   
972-823 9 Irving TX   903C ONVOY, LLC - TX 552      

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

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