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.

NPA: 865 [Rate centres in NPA 865] [Dial plan for NPA 865]

NXX: 491

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
865-491 A Mascot TN   490J BOOST SUBSCRIBERCO L.L.C. 474   2025-09-25   
865-491 0 Mascot TN   490J BOOST SUBSCRIBERCO L.L.C. 474   2025-09-25   
865-491 1 Mascot TN   490J BOOST SUBSCRIBERCO L.L.C. 474   2026-01-22   
865-491 2 Mascot TN   490J BOOST SUBSCRIBERCO L.L.C. 474   2025-11-27   
865-491 8 Mascot TN   525E ONVOY, LLC - TN 474   2026-04-04   

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.