Local Calling Guide

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NPA: 817 [Rate centres in NPA 817] [Dial plan for NPA 817]

NXX: 552

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
817-552 A Grapevine TX   903C ONVOY, LLC - TX 552      
817-552 2 Grapevine TX   903C ONVOY, LLC - TX 552      
817-552 3 Grapevine TX   903C ONVOY, LLC - TX 552      
817-552 4 Grapevine TX   903C ONVOY, LLC - TX 552      
817-552 5 Grapevine TX   903C ONVOY, LLC - TX 552      
817-552 7 Grapevine TX   903C ONVOY, LLC - TX 552      

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

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