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: 684

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-684 A Greeneville TN GRVLTN02W00  8945 NA COMMUNICATIONS, INC. 956     2025-11-22 

Last updated: Tue, 07 Oct 2025 16:47:53 UTC

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