Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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Switch: YAKMWAWE7MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
509-317 A Yakima WA 508J CENTURYLINK COMMUNICATIONS, LLC 676      
509-404 A Dayton WA 508J CENTURYLINK COMMUNICATIONS, LLC 676      
509-530 A Spokane WA 508J CENTURYLINK COMMUNICATIONS, LLC 676      
509-579 A Kennewick WA 508J CENTURYLINK COMMUNICATIONS, LLC 676      
509-603 A Spokane WA 508J CENTURYLINK COMMUNICATIONS, LLC 676      
509-913 A Othello WA 508J CENTURYLINK COMMUNICATIONS, LLC 676      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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