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: 981

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-981 A Johnson City TN   700J WAVENATION, LLC 956   2025-09-06   
423-981 0 Johnson City TN   700J WAVENATION, LLC 956   2025-09-06   

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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