Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 346 [Rate centres in NPA 346] [Dial plan for NPA 346]

Block: A

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
346-998 A Houston TX HSTNTXJAXLX  177F PEERLESS NETWORK OF TEXAS, LLC - TX 560      
346-999 A Huffman TX HSTNTXJADS6  319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 560      

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Last updated: Tue, 29 Sep 2026 03:00:13 UTC

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