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: BYLKWA01DS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
253-299 6 Sumner WA 9638 QWEST CORPORATION 674   2004-06-23   
253-447 3 Sumner WA 9638 QWEST CORPORATION 674   2005-11-14   
253-447 4 Sumner WA 9638 QWEST CORPORATION 674   2003-11-12   
253-862 A Sumner WA 9638 QWEST CORPORATION 674      

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

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