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: STTNWAHODS6

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
206-792 A Seattle WA 7340 XO WASHINGTON, INC. 674      
206-792 0 Seattle WA 7340 XO WASHINGTON, INC. 674      
206-792 1 Seattle WA 7340 XO WASHINGTON, INC. 674      
206-792 2 Seattle WA 7340 XO WASHINGTON, INC. 674      
206-792 3 Seattle WA 7340 XO WASHINGTON, INC. 674      
206-792 4 Seattle WA 7340 XO WASHINGTON, INC. 674      
425-279 A Bellevue WA 7340 XO WASHINGTON, INC. 674      
425-279 0 Bellevue WA 7340 XO WASHINGTON, INC. 674      
425-279 1 Bellevue WA 7340 XO WASHINGTON, INC. 674      
425-279 2 Bellevue WA 7340 XO WASHINGTON, INC. 674      

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

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