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: STTLWAWB20Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
206-230 1 Seattle WA 478J NUSO, LLC 674      
206-230 2 Seattle WA 478J NUSO, LLC 674      
206-594 A Seattle WA 478J NUSO, LLC 674      
206-594 1 Seattle WA 478J NUSO, LLC 674      
360-638 5 Kingston WA 478J NUSO, LLC 674      
564-203 A Port Angeles WA 478J NUSO, LLC 674      
564-203 1 Port Angeles WA 478J NUSO, LLC 674      
564-207 A Tenino WA 478J NUSO, LLC 674      
564-207 1 Tenino WA 478J NUSO, LLC 674      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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