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: NHLDCA11DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
916-331 A Sacramento: North DA CA 9740 PACIFIC BELL 726      
916-332 A Sacramento: North DA CA 9740 PACIFIC BELL 726      
916-334 A Sacramento: North DA CA 9740 PACIFIC BELL 726      
916-338 A Sacramento: North DA CA 9740 PACIFIC BELL 726      
916-339 A Sacramento: North DA CA 9740 PACIFIC BELL 726      
916-344 A Sacramento: North DA CA 9740 PACIFIC BELL 726      
916-348 A Sacramento: North DA CA 9740 PACIFIC BELL 726      
916-349 A Sacramento: North DA CA 9740 PACIFIC BELL 726      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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