Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 509 [Rate centres in NPA 509] [Dial plan for NPA 509]

NXX: 266

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
509-266 A Mathews Corner WA MTCOWAXXRS0  2408 CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK 676      
509-266 0 Mathews Corner WA   483E ONVOY, LLC - WA 676   2016-02-23   
509-266 2 Mathews Corner WA   145J TERRA NOVA TELECOM INC. 676   2025-07-19   
509-266 3 Mathews Corner WA   483E ONVOY, LLC - WA 676   2022-01-13   
509-266 4 Mathews Corner WA   2408 CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK 676      
509-266 6 Mathews Corner WA   483E ONVOY, LLC - WA 676   2021-06-27   
509-266 7 Mathews Corner WA   483E ONVOY, LLC - WA 676   2008-09-07   
509-266 8 Mathews Corner WA   483E ONVOY, LLC - WA 676   2011-08-01   

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

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