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: 242

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-242 A Chattanooga TN CHTGTNKVDS0  114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 472      
423-242 0 Chattanooga TN CHTGTNKVDS0  114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 472      
423-242 1 Chattanooga TN CHTGTNKVDS0  114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 472      
423-242 2 Chattanooga TN CHTGTNKVDS0  114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 472      
423-242 3 Chattanooga TN CHTGTNGZ4MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 472   2006-02-18   
423-242 4 Chattanooga TN CHTGTNKVDS0  114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 472      
423-242 5 Chattanooga TN CHTGTNGZ4MD  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 472   2006-02-18   
423-242 6 Chattanooga TN CHTGTNKVDS0  114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 472      
423-242 7 Chattanooga TN CHTGTNKVDS0  114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 472      
423-242 8 Chattanooga TN CHTGTNNSXCZ  7473 POWERTEL ATLANTA LICENSES, INC. 472   2003-11-29   
423-242 9 Chattanooga TN CHTGTNKVDS0  114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 472      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.