Local Calling Guide

Area code/prefix search

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

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
360-368 A STTLWANEDS0  7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 674      
360-368 0   7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 674      
360-368 1   7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 674      
360-368 2   7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 674      
360-368 3   483E ONVOY, LLC - WA 674   2016-02-09   
360-368 4   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2014-04-08   
360-368 5   7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 674      
360-368 6   7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 674      
360-368 7   7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 674      
360-368 8   7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 674      
360-368 9   7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 674      
360-785 A WNLCWA01DS0  9638 QWEST CORPORATION 674      
360-785 0   9638 QWEST CORPORATION 674      
360-785 1   9638 QWEST CORPORATION 674      
360-785 2   483E ONVOY, LLC - WA 674   2017-09-30   
360-785 3   9638 QWEST CORPORATION 674      
360-785 4   9638 QWEST CORPORATION 674      
360-785 5   663D ELTOPIA COMMUNICATIONS, LLC - WA 674   2009-04-15   
360-785 6   483E ONVOY, LLC - WA 674   2007-03-23   
360-785 7   9638 QWEST CORPORATION 674      
360-785 9   9638 QWEST CORPORATION 674      
564-633 A STTLWAWB24Z  516J TON80 COMMUNICATIONS, LLC 674      
564-633 2   483E ONVOY, LLC - WA 674   2022-10-02   
564-633 3   516J TON80 COMMUNICATIONS, LLC 674   2022-05-13   
564-633 4   483E ONVOY, LLC - WA 674   2023-01-06   
564-633 6   145J TERRA NOVA TELECOM INC. 674   2025-04-10   

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

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