Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Johnson City, TN

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
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: Sun, 07 Dec 2025 22:02:11 UTC

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