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: 430

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
206-430 A Seattle WA TKWLWALL4MD  508J CENTURYLINK COMMUNICATIONS, LLC 674      
206-430 0 Seattle WA STTLWAGAAMD  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2011-02-07   
206-430 1 Seattle WA STTNWAHODSC  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2011-01-06   
206-430 2 Seattle WA STTLWAGAAMD  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2011-03-07   
206-430 3 Seattle WA STTLWA060MD  6529 T-MOBILE USA, INC. 674   2010-12-17   
206-430 4 Seattle WA STTLWA060MD  6529 T-MOBILE USA, INC. 674   2010-12-17   
206-430 5 Seattle WA STTNWAHODS6  7340 XO WASHINGTON, INC. 674   2011-02-04   
206-430 6 Seattle WA STTLWAWBDS1  483E ONVOY, LLC - WA 674   2011-02-07   
206-430 7 Seattle WA TKWLWALL4MD  508J CENTURYLINK COMMUNICATIONS, LLC 674   2010-11-05   
206-430 8 Seattle WA STTLWA060MD  6529 T-MOBILE USA, INC. 674   2011-02-07   
206-430 9 Seattle WA STTLWA060MD  6529 T-MOBILE USA, INC. 674   2011-02-07   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.