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: 489

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
206-489 A Seattle WA STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-489 0 Seattle WA   483E ONVOY, LLC - WA 674   2013-05-20   
206-489 1 Seattle WA   7173 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 674   2013-05-27   
206-489 2 Seattle WA   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2013-03-23   
206-489 3 Seattle WA   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2013-03-23   
206-489 4 Seattle WA   483E ONVOY, LLC - WA 674   2013-05-10   
206-489 5 Seattle WA   829J PAETEC ITEL, LLC 674   2013-05-16   
206-489 6 Seattle WA   6529 T-MOBILE USA, INC. 674   2013-05-16   
206-489 7 Seattle WA   6529 T-MOBILE USA, INC. 674   2013-05-16   
206-489 8 Seattle WA   6529 T-MOBILE USA, INC. 674   2013-02-18   
206-489 9 Seattle WA   6529 T-MOBILE USA, INC. 674   2013-02-18   

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.