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: CHICCA78AMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
530-461 A Bangor CA 516C AT&T CORP. 724      
530-487 A Chico CA 516C AT&T CORP. 724      
530-762 A Paradise CA 516C AT&T CORP. 724      
530-984 A Blairsden CA 516C AT&T CORP. 724   2025-01-08   
530-985 A Gazelle CA 516C AT&T CORP. 724   2025-01-08   

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.