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: CHTGTN12X2Y

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
423-216 8 Benton TN 939H COMMIO, LLC 472   2022-11-21   
423-219 8 Charleston TN 939H COMMIO, LLC 472   2022-11-21   
423-380 4 Cleveland TN 939H COMMIO, LLC 472   2022-11-21   
423-527 A Soddy Daisy TN 939H COMMIO, LLC 472      
423-527 0 Soddy Daisy TN 939H COMMIO, LLC 472   2023-01-13   
423-527 1 Soddy Daisy TN 939H COMMIO, LLC 472   2023-01-13   
423-675 0 Jasper TN 939H COMMIO, LLC 472   2023-10-25   
423-675 2 Jasper TN 939H COMMIO, LLC 472   2023-09-28   
423-675 5 Jasper TN 939H COMMIO, LLC 472   2023-09-28   
423-675 7 Jasper TN 939H COMMIO, LLC 472   2023-09-28   
423-675 9 Jasper TN 939H COMMIO, LLC 472   2023-09-28   
423-860 A Chattanooga TN 939H COMMIO, LLC 472      
423-860 0 Chattanooga TN 939H COMMIO, LLC 472   2022-09-03   
423-862 0 Spring City TN 939H COMMIO, LLC 472   2023-10-22   
423-862 1 Spring City TN 939H COMMIO, LLC 472   2023-10-22   
423-862 8 Spring City TN 939H COMMIO, LLC 472   2023-10-22   
423-862 9 Spring City TN 939H COMMIO, LLC 472   2023-10-22   
423-864 4 Decatur TN 939H COMMIO, LLC 472   2023-08-28   
423-864 5 Decatur TN 939H COMMIO, LLC 472   2023-08-28   
423-864 7 Decatur TN 939H COMMIO, LLC 472   2023-08-28   
423-864 8 Decatur TN 939H COMMIO, LLC 472   2023-08-28   
423-864 9 Decatur TN 939H COMMIO, LLC 472   2023-08-28   
423-939 1 Jasper TN 939H COMMIO, LLC 472   2024-02-08   
423-940 A Dayton TN 939H COMMIO, LLC 472      
423-940 0 Dayton TN 939H COMMIO, LLC 472   2023-05-20   
423-980 1 Chattanooga TN 939H COMMIO, LLC 472   2024-02-08   
423-980 2 Chattanooga TN 939H COMMIO, LLC 472   2024-02-08   
423-980 3 Chattanooga TN 939H COMMIO, LLC 472   2024-02-08   
762-318 8 Rossville GA 939H COMMIO, LLC 472   2022-12-10   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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