Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Highland, TN

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
931-678 A GNBOTNXADS1  0579 TWIN LAKES TEL. COOP. CORP. 470      

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

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