Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: STTLWA03XMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
206-603 A Vashon WA 624H ONVOY SPECTRUM, LLC 674      
206-750 A Seattle WA 624H ONVOY SPECTRUM, LLC 674      
206-821 A Seattle WA 624H ONVOY SPECTRUM, LLC 674      
206-928 A Seattle WA 624H ONVOY SPECTRUM, LLC 674      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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