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: 454

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-454 A Decatur TN CHTGTNNSX8X  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 472      
423-454 0 Decatur TN CLEVTNDL0MD  704C CHARTER FIBERLINK-TENNESSEE, LLC - TN 472   2006-06-03   
423-454 1 Decatur TN CHTGTNNSXFY  124F BANDWIDTH.COM CLEC, LLC - TN 472   2014-05-26   
423-454 2 Decatur TN CHTGTNNSXKY  525E ONVOY, LLC - TN 472   2016-03-30   
423-454 3 Decatur TN CHTGTNNSXKY  525E ONVOY, LLC - TN 472   2016-03-30   
423-454 4 Decatur TN CHTGTNNSX8X  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 472   2004-12-20   
423-454 5 Decatur TN CHTGTNMAXVX  516C AT&T CORP. 472   2011-08-29   
423-454 6 Decatur TN CHTGTNNSXEY  114F TELEPORT COMMUNICATIONS AMERICA, LLC - TN 472   2016-04-01   
423-454 7 Decatur TN   508J CENTURYLINK COMMUNICATIONS LLC 472   2014-05-06   
423-454 8 Decatur TN CHTGTNNSXFY  124F BANDWIDTH.COM CLEC, LLC - TN 472   2016-08-26   
423-454 9 Decatur TN CHTGTNNSXFY  124F BANDWIDTH.COM CLEC, LLC - TN 472   2008-11-28   

Last updated: Wed, 12 Jan 2022 16:20:07 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.