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: 640

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
972-640 A Grand Prairie TX DLLSTXALDS4  903C ONVOY, LLC - TX 552      
972-640 0 Grand Prairie TX   903C ONVOY, LLC - TX 552   2022-07-04   
972-640 1 Grand Prairie TX   903C ONVOY, LLC - TX 552   2022-07-04   
972-640 2 Grand Prairie TX   903C ONVOY, LLC - TX 552   2022-07-04   
972-640 3 Grand Prairie TX   903C ONVOY, LLC - TX 552   2022-07-04   
972-640 4 Grand Prairie TX   903C ONVOY, LLC - TX 552   2022-07-04   
972-640 5 Grand Prairie TX   903C ONVOY, LLC - TX 552   2022-07-04   
972-640 6 Grand Prairie TX   903C ONVOY, LLC - TX 552   2022-07-04   
972-640 7 Grand Prairie TX   903C ONVOY, LLC - TX 552   2022-07-04   
972-640 8 Grand Prairie TX   903C ONVOY, LLC - TX 552   2022-07-04   
972-640 9 Grand Prairie TX   903C ONVOY, LLC - TX 552   2022-07-04   

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

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