Local Calling Guide

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

NXX: 620

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
903-620 A Denison TX DLLSTXRIXIZ  9748 AMERICAN MESSAGING SERVICES, LLC 552      

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

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