Local Calling Guide

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Johnson City, TN

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
423-979 8 GTCYVA02AMD  008A MOUNTAINET TELEPHONE COMPANY - TN 956   2004-01-30   
423-979 9 JHCYTNXCXYX  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2021-09-05   
423-981 A   700J WAVENATION, LLC 956   2025-09-06   
423-981 0   700J WAVENATION, LLC 956   2025-09-06   
423-995 A   321J HD CARRIER LLC 956   2026-01-22   
423-995 6   321J HD CARRIER LLC 956   2026-01-22   
423-995 7   321J HD CARRIER LLC 956   2026-01-22   
423-995 8   321J HD CARRIER LLC 956   2026-01-22   
423-995 9   321J HD CARRIER LLC 956   2026-01-22   

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Last updated: Sat, 02 May 2026 12:20:53 UTC

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