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: 600

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-600 A Apison TN CHTGTNNSXRZ  318J COMCAST IP PHONE, LLC 472      
423-600 0 Apison TN CHTGTNNSXRZ  318J COMCAST IP PHONE, LLC 472   2007-05-03   
423-600 1 Apison TN CHTGTNNSXKY  525E ONVOY, LLC - TN 472   2021-03-15   
423-600 2 Apison TN CHTGTNNSXKY  525E ONVOY, LLC - TN 472   2021-05-22   
423-600 3 Apison TN CHTGTNNSXTZ  506J TWILIO INTERNATIONAL, INC. 472   2021-08-08   
423-600 4 Apison TN CHTGTNNSXKY  525E ONVOY, LLC - TN 472   2021-10-23   
423-600 5 Apison TN CHTGTNNSXKY  525E ONVOY, LLC - TN 472   2023-02-10   
423-600 6 Apison TN CHTGTNNSXKY  525E ONVOY, LLC - TN 472   2019-08-26   
423-600 8 Apison TN CHTGTNNSXKY  525E ONVOY, LLC - TN 472   2023-09-18   
423-600 9 Apison TN CHTGTNNSXFY  124F BANDWIDTH.COM CLEC, LLC - TN 472   2008-11-28   

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

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