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: DESMWA01DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
206-231 A Des Moines WA 9638 QWEST CORPORATION 674      
206-231 2 Des Moines WA 9638 QWEST CORPORATION 674   2017-07-13   
206-231 3 Des Moines WA 9638 QWEST CORPORATION 674   2017-07-13   
206-231 4 Des Moines WA 9638 QWEST CORPORATION 674   2017-07-13   
206-592 A Des Moines WA 9638 QWEST CORPORATION 674      
206-592 0 Des Moines WA 9638 QWEST CORPORATION 674      
206-592 1 Des Moines WA 9638 QWEST CORPORATION 674      
206-592 3 Des Moines WA 9638 QWEST CORPORATION 674   2011-11-23   
206-592 4 Des Moines WA 9638 QWEST CORPORATION 674   2011-11-23   
206-592 5 Des Moines WA 9638 QWEST CORPORATION 674   2012-03-09   
206-592 8 Des Moines WA 9638 QWEST CORPORATION 674      
206-592 9 Des Moines WA 9638 QWEST CORPORATION 674      
206-824 A Des Moines WA 9638 QWEST CORPORATION 674      
206-870 A Des Moines WA 9638 QWEST CORPORATION 674      
206-878 A Des Moines WA 9638 QWEST CORPORATION 674      

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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