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.

NPA: 818 [Rate centres in NPA 818] [Dial plan for NPA 818]

NXX: 879

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
818-879 A Agoura CA AGORCA11DS0  9740 PACIFIC BELL 730      
818-879 0 Agoura CA AGORCA11DS0  9740 PACIFIC BELL 730      
818-879 1 Agoura CA AGORCA11DS0  9740 PACIFIC BELL 730      
818-879 2 Agoura CA AGORCA11DS0  9740 PACIFIC BELL 730      
818-879 3 Agoura CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
818-879 4 Agoura CA AGORCA11DS0  9740 PACIFIC BELL 730      
818-879 5 Agoura CA AGORCA11DS0  9740 PACIFIC BELL 730      
818-879 6 Agoura CA AGORCA11DS0  9740 PACIFIC BELL 730      
818-879 7 Agoura CA AGORCA11DS0  9740 PACIFIC BELL 730      
818-879 8 Agoura CA AGORCA11DS0  9740 PACIFIC BELL 730      
818-879 9 Agoura CA AGORCA11DS0  9740 PACIFIC BELL 730      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.