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: SPKNWADZ4MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
509-208 6 Yakima WA 939H COMMIO, LLC 676   2024-04-18   
509-231 2 Kennewick WA 939H COMMIO, LLC 676   2024-04-18   
509-298 8 Moses Lake WA 939H COMMIO, LLC 676   2022-11-20   
509-407 8 Quincy WA 939H COMMIO, LLC 676   2024-04-18   
509-419 0 Colville WA 939H COMMIO, LLC 676   2022-07-23   
509-506 3 Yakima WA 939H COMMIO, LLC 676   2021-08-28   
509-506 4 Yakima WA 939H COMMIO, LLC 676   2021-08-28   
509-506 6 Yakima WA 939H COMMIO, LLC 676   2021-08-28   
509-506 7 Yakima WA 939H COMMIO, LLC 676   2021-08-28   
509-516 7 Walla Walla WA 939H COMMIO, LLC 676   2022-07-23   
509-518 6 Kennewick WA 939H COMMIO, LLC 676   2021-08-31   
509-564 7 Deer Park WA 939H COMMIO, LLC 676   2022-11-20   
509-615 1 Elk-Greenbluff WA 939H COMMIO, LLC 676   2022-07-23   
509-666 A Spokane WA 939H COMMIO, LLC 676      
509-666 0 Spokane WA 939H COMMIO, LLC 676   2019-05-04   
509-800 6 Clarkston WA 939H COMMIO, LLC 676   2022-04-21   
509-870 1 Kennewick WA 939H COMMIO, LLC 676   2021-08-31   
509-870 5 Kennewick WA 939H COMMIO, LLC 676   2021-08-31   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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