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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: STTLWA03DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
206-302 A Seattle WA 9638 QWEST CORPORATION 674      
206-320 A Seattle WA 9638 QWEST CORPORATION 674      
206-322 A Seattle WA 9638 QWEST CORPORATION 674      
206-323 A Seattle WA 9638 QWEST CORPORATION 674      
206-324 A Seattle WA 9638 QWEST CORPORATION 674      
206-325 A Seattle WA 9638 QWEST CORPORATION 674      
206-328 A Seattle WA 9638 QWEST CORPORATION 674      
206-329 A Seattle WA 9638 QWEST CORPORATION 674      
206-568 A Seattle WA 9638 QWEST CORPORATION 674      
206-630 A Seattle WA 9638 QWEST CORPORATION 674      
206-709 A Seattle WA 9638 QWEST CORPORATION 674      
206-720 A Seattle WA 9638 QWEST CORPORATION 674      
206-726 A Seattle WA 9638 QWEST CORPORATION 674      
206-860 A Seattle WA 9638 QWEST CORPORATION 674      
206-861 A Seattle WA 9638 QWEST CORPORATION 674      

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

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