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: PTLDOR13XLX

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
564-274 8 Vancouver WA 732J NUSO, LLC 672   2025-01-24   
564-274 9 Vancouver WA 732J NUSO, LLC 672   2025-01-24   
971-439 A Beaverton OR 732J NUSO, LLC 672      
971-439 1 Beaverton OR 732J NUSO, LLC 672   2022-12-02   

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

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