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
509-500 0 Asotin WA SPKNWA01DS5  676   2025-05-31   
509-500 4 Asotin WA   676   2025-05-31   
509-500 7 Asotin WA   676   2025-05-31   
509-500 8 Asotin WA   676   2025-05-31   
509-500 9 Asotin WA   676   2025-05-31   
509-799 A Spokane WA SPKNWA01DS5  676   2025-01-23   
509-799 7 Spokane WA SPKNWA01DS5  676   2025-01-23   
509-799 8 Spokane WA SPKNWA01DS5  676   2025-01-23   
509-799 9 Spokane WA SPKNWA01DS5  676   2025-01-23   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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