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: 996

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
509-996 A Twisp WA WNTHWAXARS0  2408 CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK 676      
509-996 0 Twisp WA   145J TERRA NOVA TELECOM INC. 676   2025-07-21   
509-996 1 Twisp WA   159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 676   2026-06-21   
509-996 2 Twisp WA WNTHWAXARS0  2408 CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK 676      
509-996 3 Twisp WA WNTHWAXARS0  2408 CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK 676      
509-996 4 Twisp WA WNTHWAXARS0  2408 CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK 676      
509-996 5 Twisp WA SPKNWA01XXX  483E ONVOY, LLC - WA 676   2008-09-07   
509-996 6 Twisp WA SPKNWA01XUX  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 676   2022-06-17   
509-996 7 Twisp WA SPKNWA01XXX  483E ONVOY, LLC - WA 676   2011-01-06   
509-996 8 Twisp WA WNTHWAXARS0  2408 CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK 676      
509-996 9 Twisp WA WNTHWAXARS0  2408 CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK 676      

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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