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: MRTWTN281MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
423-393 A Bulls Gap TN 792K CHARTER IP ENABLED SERVICES, LLC 474   2025-01-23   
423-839 A Morristown TN 792K CHARTER IP ENABLED SERVICES, LLC 474   2025-01-23   
865-233 A Maryville TN 792K CHARTER IP ENABLED SERVICES, LLC 474   2025-01-23   
865-302 A Rutledge TN 792K CHARTER IP ENABLED SERVICES, LLC 474   2025-01-23   
865-317 A Lenoir City TN 792K CHARTER IP ENABLED SERVICES, LLC 474   2025-01-23   
865-345 A Tate Springs TN 792K CHARTER IP ENABLED SERVICES, LLC 474   2025-01-23   
865-350 A Jefferson City TN 792K CHARTER IP ENABLED SERVICES, LLC 474   2025-01-23   
865-412 A Gatlinburg TN 792K CHARTER IP ENABLED SERVICES, LLC 474   2025-01-23   
865-420 A Mascot TN 792K CHARTER IP ENABLED SERVICES, LLC 474   2025-01-23   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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