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: SGATCA01DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
323-249 A Los Angeles: DA 06 CA 9740 PACIFIC BELL 730      
323-357 A Los Angeles: DA 06 CA 9740 PACIFIC BELL 730      
323-357 0 Los Angeles: DA 06 CA 9740 PACIFIC BELL 730      
323-357 1 Los Angeles: DA 06 CA 9740 PACIFIC BELL 730      
323-357 3 Los Angeles: DA 06 CA 9740 PACIFIC BELL 730      
323-357 5 Los Angeles: DA 06 CA 9740 PACIFIC BELL 730      
323-357 6 Los Angeles: DA 06 CA 9740 PACIFIC BELL 730      
323-357 7 Los Angeles: DA 06 CA 9740 PACIFIC BELL 730      
323-357 8 Los Angeles: DA 06 CA 9740 PACIFIC BELL 730      
323-357 9 Los Angeles: DA 06 CA 9740 PACIFIC BELL 730      
323-563 A Los Angeles: DA 06 CA 9740 PACIFIC BELL 730      
323-564 A Los Angeles: DA 06 CA 9740 PACIFIC BELL 730      
323-566 A Los Angeles: DA 06 CA 9740 PACIFIC BELL 730      
323-567 A Los Angeles: DA 06 CA 9740 PACIFIC BELL 730      
323-568 A Los Angeles: DA 06 CA 9740 PACIFIC BELL 730      
323-568 2 Los Angeles: DA 06 CA 9740 PACIFIC BELL 730      
323-568 3 Los Angeles: DA 06 CA 9740 PACIFIC BELL 730      
323-568 4 Los Angeles: DA 06 CA 9740 PACIFIC BELL 730      
323-568 5 Los Angeles: DA 06 CA 9740 PACIFIC BELL 730      
323-568 8 Los Angeles: DA 06 CA 9740 PACIFIC BELL 730      
323-569 A Los Angeles: DA 06 CA 9740 PACIFIC BELL 730      

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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