Local Calling Guide

Area code/prefix search

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

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
931-415 A NSVLTNMTYJZ  318J COMCAST IP PHONE, LLC 470      
931-415 1 NSVLTNMTYJZ  318J COMCAST IP PHONE, LLC 470   2023-07-22   
931-863 A GNBOTNXADS1  0579 TWIN LAKES TEL. COOP. CORP. 470      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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