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: 206 [Rate centres in NPA 206] [Dial plan for NPA 206]

NXX: 609

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
206-609 A Seattle WA STTLWA060MD  6529 T-MOBILE USA, INC. 674   2024-09-27   
206-609 0 Seattle WA STTLWA060MD  6529 T-MOBILE USA, INC. 674   2024-10-11   
206-609 1 Seattle WA STTLWA060MD  6529 T-MOBILE USA, INC. 674   2024-10-11   
206-609 2 Seattle WA STTLWA060MD  6529 T-MOBILE USA, INC. 674   2024-10-11   
206-609 3 Seattle WA STTLWA060MD  6529 T-MOBILE USA, INC. 674   2024-10-11   
206-609 4 Seattle WA STTLWA060MD  6529 T-MOBILE USA, INC. 674   2024-09-27   
206-609 5 Seattle WA STTLWA060MD  6529 T-MOBILE USA, INC. 674   2024-09-27   
206-609 6 Seattle WA STTLWA060MD  6529 T-MOBILE USA, INC. 674   2024-09-27   
206-609 7 Seattle WA STTLWA060MD  6529 T-MOBILE USA, INC. 674   2024-09-27   
206-609 8 Seattle WA STTLWA060MD  6529 T-MOBILE USA, INC. 674   2024-09-27   
206-609 9 Seattle WA STTLWA060MD  6529 T-MOBILE USA, INC. 674   2024-09-27   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.