Local Calling Guide

Area code/prefix search

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

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
509-878 A PALSWAXXRS1  4324 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 960      
509-878 1   4324 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 960      
509-878 2   145J TERRA NOVA TELECOM INC. 960   2025-07-24   
509-878 3   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 960   2004-11-17   
509-878 4   483E ONVOY, LLC - WA 960   2017-10-01   
509-878 6   483E ONVOY, LLC - WA 960   2021-06-27   
509-878 7   483E ONVOY, LLC - WA 960   2007-10-25   
509-878 8   483E ONVOY, LLC - WA 960   2022-01-01   

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

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