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: KNVLTNMAYHX

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
423-264 A Vonore TN 318J COMCAST IP PHONE, LLC 474      
423-606 A Englewood TN 318J COMCAST IP PHONE, LLC 474      
423-730 A Riceville TN 318J COMCAST IP PHONE, LLC 474      
423-808 A Tellico Plains TN 318J COMCAST IP PHONE, LLC 474      
423-866 A Niota TN 318J COMCAST IP PHONE, LLC 474      
423-936 A Sunbright TN 318J COMCAST IP PHONE, LLC 474   2024-07-05   
423-941 A Deer Lodge TN 318J COMCAST IP PHONE, LLC 474   2024-07-05   
865-366 A Sevierville TN 318J COMCAST IP PHONE, LLC 474      
865-401 A Mascot TN 318J COMCAST IP PHONE, LLC 474      
865-417 A Gatlinburg TN 318J COMCAST IP PHONE, LLC 474      
865-419 A Rockwood TN 318J COMCAST IP PHONE, LLC 474      
865-498 A Norris TN 318J COMCAST IP PHONE, LLC 474      
865-951 A Knoxville TN 318J COMCAST IP PHONE, LLC 474      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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