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: BOISIDPZ8MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
208-280 7 Twin Falls ID 145J TERRA NOVA TELECOM INC. 652   2024-09-12   
208-430 6 Burley ID 145J TERRA NOVA TELECOM INC. 652   2024-05-26   
208-450 6 Ketchum ID 145J TERRA NOVA TELECOM INC. 652   2024-10-12   
208-471 1 Ketchum ID 145J TERRA NOVA TELECOM INC. 652   2024-02-11   
986-888 A Boise ID 145J TERRA NOVA TELECOM INC. 652      

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.