Local Calling Guide

Area code/prefix search

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Kirkland, WA

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
425-979 4 STTLWAWBDS1  483E ONVOY, LLC - WA 674   2016-02-11   
425-979 5 STTNWAHODSC  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2015-12-05   
425-979 6 TACNWADNCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2015-12-25   
425-979 7 STTLWAWBDS1  483E ONVOY, LLC - WA 674   2015-09-25   
425-979 8 TACNWADNCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2015-12-25   
425-979 9 TACNWADNCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2015-08-07   

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Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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