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: 831 [Rate centres in NPA 831] [Dial plan for NPA 831]

NXX: 663

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
831-663 A Salinas CA SLNSCA14RS0  9740 PACIFIC BELL 736      
831-663 0 Salinas CA SLNSCA14RS0  9740 PACIFIC BELL 736      
831-663 1 Salinas CA SLNSCA14RS0  9740 PACIFIC BELL 736      
831-663 2 Salinas CA SLNSCA14RS0  9740 PACIFIC BELL 736      
831-663 3 Salinas CA SLNSCA14RS0  9740 PACIFIC BELL 736      
831-663 4 Salinas CA SLNSCA14RS0  9740 PACIFIC BELL 736      
831-663 5 Salinas CA SLNSCA14RS0  9740 PACIFIC BELL 736      
831-663 6 Salinas CA SLNSCA14RS0  9740 PACIFIC BELL 736      
831-663 7 Salinas CA SLNSCA01XQX  6529 T-MOBILE USA, INC. 736      
831-663 8 Salinas CA SLNSCA14RS0  9740 PACIFIC BELL 736      
831-663 9 Salinas CA SLNSCA14RS0  9740 PACIFIC BELL 736      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.