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: KNVLTNMAYGX

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
423-640 A Sneedville TN 7421 AT&T - LOCAL 474      
423-640 9 Sneedville TN 7421 AT&T - LOCAL 474   2020-06-08   
865-274 4 Knoxville TN 7421 AT&T - LOCAL 474   2003-10-06   
865-274 5 Knoxville TN 7421 AT&T - LOCAL 474   2003-10-06   
865-297 A Knoxville TN 7421 AT&T - LOCAL 474      
865-297 0 Knoxville TN 7421 AT&T - LOCAL 474      
865-297 1 Knoxville TN 7421 AT&T - LOCAL 474      
865-297 9 Knoxville TN 7421 AT&T - LOCAL 474      
865-337 6 Knoxville TN 7421 AT&T - LOCAL 474   2014-04-11   

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

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