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.
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Switch: BNLMCA11RS2

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
831-336 A Ben Lomond CA 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 8 Ben Lomond CA 9740 PACIFIC BELL 722      
831-336 9 Ben Lomond CA 9740 PACIFIC BELL 722      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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