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: KNVOTNTN0MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
423-908 A Surgoinsville TN 939H COMMIO, LLC 474   2024-03-14   
423-998 A Jellico TN 939H COMMIO, LLC 474      
423-998 6 Jellico TN 939H COMMIO, LLC 474   2022-12-10   
423-998 7 Jellico TN 939H COMMIO, LLC 474   2022-12-10   
423-998 8 Jellico TN 939H COMMIO, LLC 474   2022-12-10   
423-998 9 Jellico TN 939H COMMIO, LLC 474   2022-12-10   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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