Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 423 [Rate centres in NPA 423] [Dial plan for NPA 423]

NXX: 219

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-219 A Charleston TN CHTGTNNSXEY  114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 472      
423-219 0 Charleston TN CHTGTNNSXJZ  073H TELNYX LLC 472   2021-01-17   
423-219 1 Charleston TN CHTGTNNSXJZ  073H TELNYX LLC 472   2022-09-05   
423-219 2 Charleston TN CHTGTNNSXKY  525E ONVOY, LLC - TN 472   2021-07-11   
423-219 3 Charleston TN CHTGTNNSXKY  525E ONVOY, LLC - TN 472   2021-07-11   
423-219 4 Charleston TN CHTGTNNSXTZ  506J TWILIO INTERNATIONAL, INC. 472   2021-08-08   
423-219 5 Charleston TN CHTGTNNSXFY  124F BANDWIDTH.COM CLEC, LLC - TN 472   2021-12-09   
423-219 6 Charleston TN CHTGTNNSXEY  114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 472   2019-11-08   
423-219 7 Charleston TN CHTGTNNSXEY  114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 472   2019-11-08   
423-219 8 Charleston TN CHTGTN12X2Y  939H COMMIO, LLC 472   2022-11-21   
423-219 9 Charleston TN CHTGTNNSXJZ  073H TELNYX LLC 472   2021-12-02   

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.