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: LSANCA03JMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
213-723 A Los Angeles: DA 01 CA 506J TWILIO INTERNATIONAL, INC. 730      
213-723 7 Los Angeles: DA 01 CA 506J TWILIO INTERNATIONAL, INC. 730   2020-10-15   
714-497 2 Orange CA 506J TWILIO INTERNATIONAL, INC. 730      
714-598 2 Anaheim CA 506J TWILIO INTERNATIONAL, INC. 730      
714-604 2 Santa Ana CA 506J TWILIO INTERNATIONAL, INC. 730      
714-786 1 Garden Grove CA 506J TWILIO INTERNATIONAL, INC. 730      

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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