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: IRVNCASMGT0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
323-456 A Los Angeles: DA 13 CA 7453 U.S. TELEPACIFIC CORP. - CA 730      
661-964 A Santa Clarita: Newhall-Castaic DA CA 7453 U.S. TELEPACIFIC CORP. - CA 730      
714-426 A Santa Ana CA 7453 U.S. TELEPACIFIC CORP. - CA 730      
949-599 A Saddleback Valley CA 7453 U.S. TELEPACIFIC CORP. - CA 730      

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

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