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.

NPA: 509 [Rate centres in NPA 509] [Dial plan for NPA 509]

NXX: 307

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
509-307 A Yakima WA YAKMWA020MD  6529 T-MOBILE USA, INC. 676      
509-307 0 Yakima WA   6529 T-MOBILE USA, INC. 676      
509-307 1 Yakima WA   6529 T-MOBILE USA, INC. 676      
509-307 2 Yakima WA   6529 T-MOBILE USA, INC. 676      
509-307 3 Yakima WA   6529 T-MOBILE USA, INC. 676      
509-307 4 Yakima WA   6529 T-MOBILE USA, INC. 676      
509-307 5 Yakima WA   6529 T-MOBILE USA, INC. 676      
509-307 6 Yakima WA   6529 T-MOBILE USA, INC. 676      
509-307 7 Yakima WA   6529 T-MOBILE USA, INC. 676      
509-307 8 Yakima WA   6529 T-MOBILE USA, INC. 676      
509-307 9 Yakima WA   6529 T-MOBILE USA, INC. 676      

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.