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: SNSDWAXXTMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
509-402 A Grandview WA 483E ONVOY, LLC - WA 676      
509-402 0 Grandview WA 483E ONVOY, LLC - WA 676   2021-07-17   
509-642 A Harrah WA 483E ONVOY, LLC - WA 676      
509-642 0 Harrah WA 483E ONVOY, LLC - WA 676   2023-05-22   
509-642 1 Harrah WA 483E ONVOY, LLC - WA 676   2021-06-27   
509-642 6 Harrah WA 483E ONVOY, LLC - WA 676   2020-07-20   

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

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