Local Calling Guide

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

NXX: 400

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
817-400 A Grapevine TX   903C ONVOY, LLC - TX 552   2025-04-11   
817-400 0 Grapevine TX   903C ONVOY, LLC - TX 552   2007-01-12   
817-400 1 Grapevine TX   903C ONVOY, LLC - TX 552   2007-01-12   
817-400 2 Grapevine TX   903C ONVOY, LLC - TX 552   2007-01-12   
817-400 3 Grapevine TX   903C ONVOY, LLC - TX 552   2007-01-12   
817-400 4 Grapevine TX   903C ONVOY, LLC - TX 552   2007-01-12   
817-400 5 Grapevine TX   903C ONVOY, LLC - TX 552   2007-01-12   
817-400 6 Grapevine TX   903C ONVOY, LLC - TX 552   2007-01-12   
817-400 7 Grapevine TX   903C ONVOY, LLC - TX 552   2007-01-12   
817-400 8 Grapevine TX   903C ONVOY, LLC - TX 552   2007-01-12   
817-400 9 Grapevine TX   903C ONVOY, LLC - TX 552   2007-01-12   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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