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: LSANCA15DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
323-290 A Los Angeles: DA 12 CA 9740 PACIFIC BELL 730      
323-291 A Los Angeles: DA 12 CA 9740 PACIFIC BELL 730      
323-292 A Los Angeles: DA 12 CA 9740 PACIFIC BELL 730      
323-293 A Los Angeles: DA 12 CA 9740 PACIFIC BELL 730      
323-294 A Los Angeles: DA 12 CA 9740 PACIFIC BELL 730      
323-295 A Los Angeles: DA 12 CA 9740 PACIFIC BELL 730      
323-296 A Los Angeles: DA 12 CA 9740 PACIFIC BELL 730      
323-298 A Los Angeles: DA 12 CA 9740 PACIFIC BELL 730      
323-299 A Los Angeles: DA 12 CA 9740 PACIFIC BELL 730      
323-421 A Los Angeles: DA 12 CA 9740 PACIFIC BELL 730      
323-545 A Los Angeles: DA 12 CA 9740 PACIFIC BELL 730      

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

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