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.
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Switch: NORGCA11DS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
818-341 A Northridge CA 9740 PACIFIC BELL 730      
818-349 A Northridge CA 9740 PACIFIC BELL 730      
818-407 A Northridge CA 9740 PACIFIC BELL 730      
818-700 A Northridge CA 9740 PACIFIC BELL 730      
818-701 A Northridge CA 9740 PACIFIC BELL 730      
818-709 A Northridge CA 9740 PACIFIC BELL 730      
818-717 A Northridge CA 9740 PACIFIC BELL 730      
818-882 A Northridge CA 9740 PACIFIC BELL 730      
818-885 A Northridge CA 9740 PACIFIC BELL 730      
818-886 A Northridge CA 9740 PACIFIC BELL 730      
818-993 A Northridge CA 9740 PACIFIC BELL 730      
818-998 A Northridge CA 9740 PACIFIC BELL 730      

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

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