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: 457

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
206-457 A Seattle WA TACNWADNCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 674      
206-457 0 Seattle WA STTLWAWBDS1  483E ONVOY, LLC - WA 674      
206-457 1 Seattle WA STTLWAWBDS1  483E ONVOY, LLC - WA 674      
206-457 2 Seattle WA STTLWAWBX7Z  006F BANDWIDTH.COM CLEC, LLC - WA 674   2011-06-17   
206-457 3 Seattle WA STTLWAWBX7Z  006F BANDWIDTH.COM CLEC, LLC - WA 674   2011-06-17   
206-457 4 Seattle WA STTLWA03X1X  318J COMCAST IP PHONE, LLC 674   2011-07-07   
206-457 5 Seattle WA STTLWA03X1X  318J COMCAST IP PHONE, LLC 674   2011-07-07   
206-457 6 Seattle WA TACNWADNCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2011-08-23   
206-457 7 Seattle WA TACNWADNCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2011-08-23   
206-457 8 Seattle WA STTLWA03X1X  318J COMCAST IP PHONE, LLC 674   2011-07-07   
206-457 9 Seattle WA TACNWADNCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2011-08-23   

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.