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: STTLWAWBDS1

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
564-633 2 Winlock WA 483E ONVOY, LLC - WA 674   2022-10-02   
564-633 4 Winlock WA 483E ONVOY, LLC - WA 674   2023-01-06   
564-654 A Bremerton WA 483E ONVOY, LLC - WA 674      
564-654 4 Bremerton WA 483E ONVOY, LLC - WA 674   2020-12-19   
564-654 5 Bremerton WA 483E ONVOY, LLC - WA 674   2020-12-19   
564-654 6 Bremerton WA 483E ONVOY, LLC - WA 674   2020-12-19   
564-676 2 Oak Harbor WA 483E ONVOY, LLC - WA 674   2021-11-13   
564-676 3 Oak Harbor WA 483E ONVOY, LLC - WA 674   2021-11-13   
564-676 4 Oak Harbor WA 483E ONVOY, LLC - WA 674   2021-11-13   
564-999 6 Olympia WA 483E ONVOY, LLC - WA 674   2020-08-06   

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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