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: KNWCWAXA1MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
509-205 A Kennewick WA 6529 T-MOBILE USA, INC. 676      
509-212 A Kennewick WA 6529 T-MOBILE USA, INC. 676      
509-302 A Pasco WA 5562 METROPCS, INC. 676      
509-308 A Kennewick WA 6529 T-MOBILE USA, INC. 676      
509-405 A Kennewick WA 6529 T-MOBILE USA, INC. 676      
509-412 A Pasco WA 5562 METROPCS, INC. 676      
509-438 A Kennewick WA 6529 T-MOBILE USA, INC. 676      
509-440 A Kennewick WA 6529 T-MOBILE USA, INC. 676      
509-460 A Kennewick WA 6529 T-MOBILE USA, INC. 676      
509-727 A Kennewick WA 6529 T-MOBILE USA, INC. 676      
509-851 A Pasco WA 5562 METROPCS, INC. 676      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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