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.

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
206-480 0 Seattle WA STTLWA030MD  674   2017-08-01   
206-596 A Seattle WA STTLWA030MD  674      
206-596 0 Seattle WA STTLWA030MD  674   2012-04-06   
206-596 9 Seattle WA STTLWA030MD  674   2012-09-15   
206-640 0 Seattle WA STTLWA030MD  674   2019-03-28   
360-550 A Bremerton WA STTLWA06Y4X  674      
360-550 9 Bremerton WA STTLWA06Y4X  674   2002-07-11   
509-503 0 Spokane WA SPKNWA01XSX  676   2019-11-28   
509-503 2 Spokane WA SPKNWA01XSX  676   2019-11-28   
509-503 3 Spokane WA SPKNWA01XSX  676   2019-11-28   
509-503 4 Spokane WA SPKNWA01XSX  676   2019-11-28   
509-503 5 Spokane WA SPKNWA01XSX  676   2019-11-28   
509-503 7 Spokane WA SPKNWA01XSX  676   2019-10-25   
509-844 A Spokane WA SPKNWA01XSX  676      
509-844 0 Spokane WA SPKNWA01XSX  676      
509-844 9 Spokane WA SPKNWA01XSX  676      
509-960 9 Spokane WA SPKNWA01XSX  676   2016-09-05   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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