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.


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: Fri, 28 Jun 2024 03:14:50 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.