Local Calling Guide

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

NXX: 635

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
817-635 A Arlington TX   903C ONVOY, LLC - TX 552      
817-635 0 Arlington TX   903C ONVOY, LLC - TX 552   2025-10-21   
817-635 1 Arlington TX   903C ONVOY, LLC - TX 552      
817-635 2 Arlington TX   903C ONVOY, LLC - TX 552   2025-10-21   
817-635 3 Arlington TX   903C ONVOY, LLC - TX 552      
817-635 4 Arlington TX   903C ONVOY, LLC - TX 552   2025-10-18   
817-635 5 Arlington TX   145J TERRA NOVA TELECOM INC. 552   2025-10-14   
817-635 6 Arlington TX   903C ONVOY, LLC - TX 552      
817-635 7 Arlington TX   903C ONVOY, LLC - TX 552      
817-635 8 Arlington TX   903C ONVOY, LLC - TX 552      
817-635 9 Arlington TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 552   2025-10-24   

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

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