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: CHTGTN12DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
423-960 A Chattanooga TN 276F PEERLESS NETWORK OF TENNESSEE, LLC - TN 472   2025-04-20   
423-960 0 Chattanooga TN 276F PEERLESS NETWORK OF TENNESSEE, LLC - TN 472   2025-04-20   
423-960 5 Chattanooga TN 276F PEERLESS NETWORK OF TENNESSEE, LLC - TN 472   2026-05-25   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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