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: 931 [Rate centres in NPA 931] [Dial plan for NPA 931]

NXX: 373

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
931-373 A Rickman TN   792K CHARTER IP ENABLED SERVICES, LLC 470      
931-373 1 Rickman TN   792K CHARTER IP ENABLED SERVICES, LLC 470   2023-03-19   
931-373 3 Rickman TN   145J TERRA NOVA TELECOM INC. 470   2025-08-10   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.