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: 951 [Rate centres in NPA 951] [Dial plan for NPA 951]

NXX: 278

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
951-278 A Corona CA CORNCA11DS0  9740 PACIFIC BELL 730      
951-278 0 Corona CA CORNCA11DS0  9740 PACIFIC BELL 730      
951-278 1 Corona CA CORNCA11DS0  9740 PACIFIC BELL 730      
951-278 2 Corona CA CORNCA11DS0  9740 PACIFIC BELL 730      
951-278 3 Corona CA CORNCA11DS0  9740 PACIFIC BELL 730      
951-278 4 Corona CA CORNCA11DS0  9740 PACIFIC BELL 730      
951-278 5 Corona CA CORNCA11DS0  9740 PACIFIC BELL 730      
951-278 6 Corona CA CORNCA11DS0  9740 PACIFIC BELL 730      
951-278 7 Corona CA LSANCARC80Z  9262 UTILITY TELECOM GROUP, LLC - CA 730      
951-278 8 Corona CA CORNCA11DS0  9740 PACIFIC BELL 730      
951-278 9 Corona CA CORNCA11DS0  9740 PACIFIC BELL 730      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.