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: MRCPCAXFRS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
661-769 A Taft CA 4420 FRONTIER CALIFORNIA INC. 734      
661-769 2 Taft CA 4420 FRONTIER CALIFORNIA INC. 734      
661-769 8 Taft CA 4420 FRONTIER CALIFORNIA INC. 734      
661-769 9 Taft CA 4420 FRONTIER CALIFORNIA INC. 734      

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.