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: LNBHCAXT43K

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
562-433 A Alamitos CA 2319 FRONTIER CALIFORNIA INC. 730      
562-434 A Alamitos CA 2319 FRONTIER CALIFORNIA INC. 730      
562-438 A Alamitos CA 2319 FRONTIER CALIFORNIA INC. 730      
562-439 A Alamitos CA 2319 FRONTIER CALIFORNIA INC. 730      
562-621 A Alamitos CA 2319 FRONTIER CALIFORNIA INC. 730      
562-856 A Alamitos CA 2319 FRONTIER CALIFORNIA INC. 730      
562-856 0 Alamitos CA 2319 FRONTIER CALIFORNIA INC. 730      
562-856 1 Alamitos CA 2319 FRONTIER CALIFORNIA INC. 730      
562-856 2 Alamitos CA 2319 FRONTIER CALIFORNIA INC. 730      
562-856 3 Alamitos CA 2319 FRONTIER CALIFORNIA INC. 730      
562-856 4 Alamitos CA 2319 FRONTIER CALIFORNIA INC. 730      
562-856 5 Alamitos CA 2319 FRONTIER CALIFORNIA INC. 730      
562-856 7 Alamitos CA 2319 FRONTIER CALIFORNIA INC. 730      
562-856 8 Alamitos CA 2319 FRONTIER CALIFORNIA INC. 730      
562-856 9 Alamitos CA 2319 FRONTIER CALIFORNIA INC. 730      
562-930 A Alamitos CA 2319 FRONTIER CALIFORNIA INC. 730      
562-987 A Alamitos CA 2319 FRONTIER CALIFORNIA INC. 730      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.