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.
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OCN: 453J CORETEL WASHINGTON, INC. - WA

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
206-308 A Seattle WA STTLWAWB24Z  674      
206-581 A Seattle WA STTLWAWBDSH  674      
206-581 2 Seattle WA STTLWAWBDSH  674   2019-08-16   
360-369 A Battle Ground WA PTLDOR13DS4  672      
360-369 5 Battle Ground WA PTLDOR13DS4  672   2019-08-22   
509-739 A Almira WA SPKNWADZDS3  676      
509-739 2 Almira WA SPKNWADZDS3  676   2019-08-23   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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