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.

Switch: KNVLTNMAX1Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
423-200 A Morristown TN 4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474      
423-201 A La Follette TN 4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474      
423-435 A Athens TN 4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474      
423-436 A Madisonville TN 4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474      
423-437 A La Follette TN 4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474      
423-438 A Morristown TN 4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474      
423-453 A Athens TN 4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474      
423-455 A Jellico TN 4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474      
423-545 A Madisonville TN 4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474      
423-546 A Bulls Gap TN 4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474      
423-973 A Sneedville TN 4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474      
865-229 A Greenback TN 4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474   2007-02-24   
865-245 A Rockwood TN 4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474   2004-12-20   
865-272 A Oak Ridge TN 4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474      
865-325 A Gatlinburg TN 4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474   2006-07-15   
865-630 A Lake City TN 4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474   2004-12-20   
865-684 A Knoxville TN 4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474      
865-685 A Oak Ridge TN 4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474      
865-730 A Oliver Springs TN 4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474   2004-12-20   
865-761 A White Pine TN 4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474   2004-12-20   
865-896 A Solway TN 4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474   2005-08-27   
865-935 A Bean Station TN 4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474   2004-12-20   

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.