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: FRSNCA0101Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
209-934 A Merced CA 516J TON80 COMMUNICATIONS, LLC 738      
559-929 A Hanford CA 516J TON80 COMMUNICATIONS, LLC 728      
559-933 A Firebaugh CA 516J TON80 COMMUNICATIONS, LLC 728      
559-939 A Fresno CA 516J TON80 COMMUNICATIONS, LLC 728      
559-993 A Visalia CA 516J TON80 COMMUNICATIONS, LLC 728      
559-996 A Corcoran CA 516J TON80 COMMUNICATIONS, LLC 728      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.