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: 719

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-719 A Chattanooga TN CHTGTNNSXYZ  478J NUSO, LLC 472      
423-719 0 Chattanooga TN   525E ONVOY, LLC - TN 472   2023-09-12   
423-719 1 Chattanooga TN   124F BANDWIDTH.COM CLEC, LLC - TN 472   2023-01-07   
423-719 2 Chattanooga TN   478J NUSO, LLC 472   2022-02-03   
423-719 3 Chattanooga TN   525E ONVOY, LLC - TN 472   2023-03-30   
423-719 4 Chattanooga TN   525E ONVOY, LLC - TN 472   2023-03-30   
423-719 5 Chattanooga TN   525E ONVOY, LLC - TN 472   2023-03-30   
423-719 6 Chattanooga TN   525E ONVOY, LLC - TN 472   2023-05-13   
423-719 7 Chattanooga TN   525E ONVOY, LLC - TN 472   2023-05-13   
423-719 8 Chattanooga TN   124F BANDWIDTH.COM CLEC, LLC - TN 472   2023-01-07   
423-719 9 Chattanooga TN   7473 POWERTEL ATLANTA LICENSES, INC. 472   2022-06-09   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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