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: SNJSCA11DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
408-251 A San Jose: North DA CA 9740 PACIFIC BELL 722      
408-254 A San Jose: North DA CA 9740 PACIFIC BELL 722      
408-258 A San Jose: North DA CA 9740 PACIFIC BELL 722      
408-259 A San Jose: North DA CA 9740 PACIFIC BELL 722      
408-272 A San Jose: North DA CA 9740 PACIFIC BELL 722      
408-347 A San Jose: North DA CA 9740 PACIFIC BELL 722      
408-729 A San Jose: North DA CA 9740 PACIFIC BELL 722      
408-923 A San Jose: North DA CA 9740 PACIFIC BELL 722      
408-926 A San Jose: North DA CA 9740 PACIFIC BELL 722      
408-928 A San Jose: North DA CA 9740 PACIFIC BELL 722      
408-929 A San Jose: North DA CA 9740 PACIFIC BELL 722      
408-937 A San Jose: North DA CA 9740 PACIFIC BELL 722      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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