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: 906

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-906 A Johnson City TN JHCYTNXCXWY  475J CALLWORKS CORPORATION 956      
423-906 0 Johnson City TN JHCYTNXCXPY  624H ONVOY SPECTRUM, LLC 956   2024-01-05   
423-906 1 Johnson City TN   475J CALLWORKS CORPORATION 956   2023-12-15   
423-906 6 Johnson City TN   939H COMMIO, LLC 956   2024-02-08   
423-906 7 Johnson City TN   939H COMMIO, LLC 956   2024-02-08   
423-906 8 Johnson City TN   939H COMMIO, LLC 956   2024-02-08   
423-906 9 Johnson City TN   939H COMMIO, LLC 956   2024-02-08   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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