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: 818

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-818 A Jellico TN KNVNTNECDMD  276F PEERLESS NETWORK OF TENNESSEE, LLC - TN 474      
423-818 0 Jellico TN   525E ONVOY, LLC - TN 474   2016-11-12   
423-818 1 Jellico TN   525E ONVOY, LLC - TN 474   2018-03-31   
423-818 2 Jellico TN   124F BANDWIDTH.COM CLEC, LLC - TN 474   2025-10-10   
423-818 3 Jellico TN   124F BANDWIDTH.COM CLEC, LLC - TN 474   2021-06-19   
423-818 4 Jellico TN   525E ONVOY, LLC - TN 474   2021-10-25   
423-818 5 Jellico TN   145J TERRA NOVA TELECOM INC. 474   2023-12-17   
423-818 6 Jellico TN   525E ONVOY, LLC - TN 474   2021-07-30   
423-818 7 Jellico TN   525E ONVOY, LLC - TN 474   2021-03-04   
423-818 8 Jellico TN   073H TELNYX LLC 474   2018-09-21   
423-818 9 Jellico TN   525E ONVOY, LLC - TN 474   2020-12-21   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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