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: 995

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-995 A Johnson City TN JHCYTNXCX6Z  321J HD CARRIER LLC 956   2026-01-22   
423-995 0 Johnson City TN JHCYTNXCXNX  124F BANDWIDTH.COM CLEC, LLC - TN 956   2026-07-13   
423-995 1 Johnson City TN   124F BANDWIDTH.COM CLEC, LLC - TN 956   2026-10-02   
423-995 6 Johnson City TN JHCYTNXCX6Z  321J HD CARRIER LLC 956   2026-01-22   
423-995 7 Johnson City TN JHCYTNXCX6Z  321J HD CARRIER LLC 956   2026-01-22   
423-995 8 Johnson City TN JHCYTNXCX6Z  321J HD CARRIER LLC 956   2026-01-22   
423-995 9 Johnson City TN JHCYTNXCX6Z  321J HD CARRIER LLC 956   2026-01-22   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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