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: RVSDCA01DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
951-248 A Riverside CA 9740 PACIFIC BELL 730      
951-320 A Riverside CA 9740 PACIFIC BELL 730      
951-321 A Riverside CA 9740 PACIFIC BELL 730      
951-680 A Riverside CA 9740 PACIFIC BELL 730      
951-682 A Riverside CA 9740 PACIFIC BELL 730      
951-683 A Riverside CA 9740 PACIFIC BELL 730      
951-684 A Riverside CA 9740 PACIFIC BELL 730      
951-686 A Riverside CA 9740 PACIFIC BELL 730      
951-774 A Riverside CA 9740 PACIFIC BELL 730      
951-782 A Riverside CA 9740 PACIFIC BELL 730      
951-784 A Riverside CA 9740 PACIFIC BELL 730      
951-826 A Riverside CA 9740 PACIFIC BELL 730      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.