Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 940 [Rate centres in NPA 940] [Dial plan for NPA 940]

Block: A

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
940-999 A Denton TX DLLATX58DS1  319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 552      

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

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