Local Calling Guide

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NPA: 903 [Rate centres in NPA 903] [Dial plan for NPA 903]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
903-998 7 Corsicana TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2021-11-21   
903-998 8 Corsicana TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2021-11-21   
903-998 9 Corsicana TX DLLTTXID1MD  6529 T-MOBILE USA, INC. 552   2022-02-04   
903-999 A Martins Mill TX DLLATX58DS1  319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 552      
903-999 0 Martins Mill TX   145J TERRA NOVA TELECOM INC. 552   2025-08-15   
903-999 1 Martins Mill TX ATHNTXXATMD  903C ONVOY, LLC - TX 552   2016-04-11   
903-999 2 Martins Mill TX ATHNTXXATMD  903C ONVOY, LLC - TX 552   2016-04-11   
903-999 3 Martins Mill TX   793K TWC IP ENABLED SERVICES, LLC 552   2023-04-23   
903-999 7 Martins Mill TX DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2014-05-16   
903-999 8 Martins Mill TX DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2020-03-09   
903-999 9 Martins Mill TX DLLATX58DS1  319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 552   2016-05-15   

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Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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