Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Martins Mill, TX

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
903-479 A MRMLTXXARS1  2084 BRIGHTSPEED OF EASTERN TEXAS, INC. 552      
903-999 A DLLATX58DS1  319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 552      
903-999 0   145J TERRA NOVA TELECOM INC. 552   2025-08-15   
903-999 1 ATHNTXXATMD  903C ONVOY, LLC - TX 552   2016-04-11   
903-999 2 ATHNTXXATMD  903C ONVOY, LLC - TX 552   2016-04-11   
903-999 3   793K TWC IP ENABLED SERVICES, LLC 552   2023-04-23   
903-999 7 DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2014-05-16   
903-999 8 DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2020-03-09   
903-999 9 DLLATX58DS1  319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 552   2016-05-15   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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