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: LSANCAJWRMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
213-913 A Los Angeles: DA 07 CA 026K BARR TELL USA, LLC 730      
657-602 A Anaheim CA 026K BARR TELL USA, LLC 730      
657-610 A Santa Ana CA 026K BARR TELL USA, LLC 730      
657-770 A Westminster CA 026K BARR TELL USA, LLC 730      
747-355 A North Hollywood CA 026K BARR TELL USA, LLC 730      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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