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.
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Switch: CETNWA010MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
509-977 A Creston WA 1477 INLAND CELLULAR LLC 676      
509-977 1 Creston WA 1477 INLAND CELLULAR LLC 676   2004-06-14   
509-977 2 Creston WA 1477 INLAND CELLULAR LLC 676   2004-06-14   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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