Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Kirkland, WA

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

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

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