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: HLWDCA01DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
323-462 A Los Angeles: DA 14 CA 9740 PACIFIC BELL 730      
323-464 A Los Angeles: DA 14 CA 9740 PACIFIC BELL 730      
323-467 A Los Angeles: DA 14 CA 9740 PACIFIC BELL 730      
323-468 A Los Angeles: DA 14 CA 9740 PACIFIC BELL 730      
323-817 A Los Angeles: DA 14 CA 9740 PACIFIC BELL 730      
323-836 A Los Angeles: DA 14 CA 9740 PACIFIC BELL 730      
323-860 A Los Angeles: DA 14 CA 9740 PACIFIC BELL 730      
323-862 A Los Angeles: DA 14 CA 9740 PACIFIC BELL 730      
323-956 A Los Angeles: DA 14 CA 9740 PACIFIC BELL 730      
323-957 A Los Angeles: DA 14 CA 9740 PACIFIC BELL 730      
323-962 A Los Angeles: DA 14 CA 9740 PACIFIC BELL 730      
323-993 A Los Angeles: DA 14 CA 9740 PACIFIC BELL 730      

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

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