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: 420

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
831-420 A Santa Cruz CA SNCZCA01DS0  9740 PACIFIC BELL 722      
831-420 0 Santa Cruz CA SNCZCA01DS0  9740 PACIFIC BELL 722      
831-420 1 Santa Cruz CA SNCZCA01DS0  9740 PACIFIC BELL 722      
831-420 2 Santa Cruz CA SNCZCA01DS0  9740 PACIFIC BELL 722      
831-420 3 Santa Cruz CA SNCZCA01DS0  9740 PACIFIC BELL 722      
831-420 4 Santa Cruz CA SNCZCA01DS0  9740 PACIFIC BELL 722      
831-420 5 Santa Cruz CA SNCZCA01DS0  9740 PACIFIC BELL 722      
831-420 6 Santa Cruz CA SNCZCA01DS0  9740 PACIFIC BELL 722      
831-420 7 Santa Cruz CA SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2004-12-10   
831-420 8 Santa Cruz CA SNFCCAMMDS7  258E YMAX COMMUNICATIONS CORP. - CA 722   2007-07-29   
831-420 9 Santa Cruz CA SNCZCA01DS0  9740 PACIFIC BELL 722      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.