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: 336

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
831-336 A Ben Lomond CA BNLMCA11RS2  9740 PACIFIC BELL 722      
831-336 0 Ben Lomond CA   9740 PACIFIC BELL 722      
831-336 1 Ben Lomond CA   9740 PACIFIC BELL 722      
831-336 2 Ben Lomond CA   9740 PACIFIC BELL 722      
831-336 3 Ben Lomond CA   9740 PACIFIC BELL 722      
831-336 5 Ben Lomond CA   9740 PACIFIC BELL 722      
831-336 7 Ben Lomond CA   9262 UTILITY TELECOM GROUP, LLC - CA 722   2006-06-14   
831-336 8 Ben Lomond CA   9740 PACIFIC BELL 722      
831-336 9 Ben Lomond CA   9740 PACIFIC BELL 722      

Last updated: Sun, 29 Nov 2020 13:13:58 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.