Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 423 [Rate centres in NPA 423] [Dial plan for NPA 423]

NXX: 832

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-832 A Clinchport TN KNVNTNEC6MD  516J TON80 COMMUNICATIONS, LLC 244      
423-832 4 Clinchport TN   516J TON80 COMMUNICATIONS, LLC 244   2022-03-16   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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