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.

Seattle, WA

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
206-854 8   6529 T-MOBILE USA, INC. 674      
206-854 9   5562 METROPCS, INC. 674      
206-856 A STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-856 0   6529 T-MOBILE USA, INC. 674      
206-856 1   6529 T-MOBILE USA, INC. 674      
206-856 2   6529 T-MOBILE USA, INC. 674      
206-856 3   6529 T-MOBILE USA, INC. 674      
206-856 4   6529 T-MOBILE USA, INC. 674      
206-856 5   6529 T-MOBILE USA, INC. 674      
206-856 6   6529 T-MOBILE USA, INC. 674      
206-856 7   6529 T-MOBILE USA, INC. 674      
206-856 8   6529 T-MOBILE USA, INC. 674      
206-856 9   5562 METROPCS, INC. 674      
206-858 A TKWLWAZSPS0  7173 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 674      
206-858 0   5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2013-09-19   
206-858 1   5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2013-09-19   
206-858 2   5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2013-02-04   
206-858 3   5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2013-02-04   
206-858 4   829J PAETEC ITEL, LLC 674   2013-02-13   
206-858 5   829J PAETEC ITEL, LLC 674   2013-02-13   
206-858 6   318J COMCAST IP PHONE, LLC 674   2013-02-27   
206-858 7   7173 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 674   2012-12-29   
206-858 8   159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 674   2013-02-25   
206-858 9   159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 674   2013-02-25   
206-859 A TKWLWAZSPS0  7173 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 674      
206-859 0   6529 T-MOBILE USA, INC. 674   2005-10-28   
206-859 1   6529 T-MOBILE USA, INC. 674   2005-10-28   
206-859 2   7173 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 674      
206-859 3   6529 T-MOBILE USA, INC. 674   2005-10-28   
206-859 4   7173 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 674   2005-02-18   
206-859 5   7173 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 674   2005-06-18   
206-859 6   7173 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 674   2005-06-18   
206-859 7   6529 T-MOBILE USA, INC. 674   2006-07-21   
206-859 8   6529 T-MOBILE USA, INC. 674   2005-05-28   
206-859 9   6529 T-MOBILE USA, INC. 674   2005-05-28   
206-860 A STTLWA03DS0  9638 QWEST CORPORATION 674      
206-861 A STTLWA03DS0  9638 QWEST CORPORATION 674      
206-861 0   9638 QWEST CORPORATION 674      
206-861 1   9638 QWEST CORPORATION 674      
206-861 2   6529 T-MOBILE USA, INC. 674   2006-06-26   
206-861 3   6529 T-MOBILE USA, INC. 674   2006-07-21   
206-861 4   6529 T-MOBILE USA, INC. 674   2006-10-14   
206-861 5   6010 NEW CINGULAR WIRELESS PCS, LLC 674   2006-01-23   
206-861 6   6010 NEW CINGULAR WIRELESS PCS, LLC 674   2006-01-23   
206-861 7   9638 QWEST CORPORATION 674      
206-861 8   9638 QWEST CORPORATION 674      
206-861 9   6529 T-MOBILE USA, INC. 674   2007-02-23   
206-862 A   616J LEAP TELECOM, LLC 674   2025-07-26   
206-862 0   616J LEAP TELECOM, LLC 674   2025-07-26   
206-862 1   616J LEAP TELECOM, LLC 674   2025-07-26   
206-862 2   616J LEAP TELECOM, LLC 674   2025-07-26   
206-862 3   159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 674   2025-09-14   
206-863 A   7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 674   2025-12-19   
206-863 0   7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 674   2025-12-19   
206-863 1   7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 674   2025-12-19   
206-863 2   7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 674   2025-12-19   
206-863 3   7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 674   2025-12-19   
206-863 4   7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 674   2025-12-19   
206-863 5   7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 674   2025-12-19   
206-863 6   7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 674   2025-12-19   
206-863 7   7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 674   2025-12-19   
206-863 8   7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 674   2025-12-19   
206-863 9   7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 674   2025-12-19   
206-865 A STTLWAWBDS1  483E ONVOY, LLC - WA 674      
206-865 0   483E ONVOY, LLC - WA 674   2023-01-23   
206-865 1   483E ONVOY, LLC - WA 674   2023-01-23   
206-865 2   483E ONVOY, LLC - WA 674   2023-01-23   
206-865 3   483E ONVOY, LLC - WA 674   2023-01-23   
206-865 4   483E ONVOY, LLC - WA 674   2023-01-23   
206-865 5   483E ONVOY, LLC - WA 674   2023-01-23   
206-865 6   483E ONVOY, LLC - WA 674   2023-01-23   
206-865 7   483E ONVOY, LLC - WA 674   2023-01-23   
206-865 8   483E ONVOY, LLC - WA 674   2023-01-23   
206-865 9   483E ONVOY, LLC - WA 674   2023-01-23   
206-867 A STTLWAWBXSZ  939H COMMIO, LLC 674      
206-867 0   5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2019-04-29   
206-867 1   5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2019-04-29   
206-867 2   5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2019-05-15   
206-867 3   5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2019-05-15   
206-867 4   5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2019-06-17   
206-867 5   939H COMMIO, LLC 674   2019-04-28   
206-867 6   5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2019-06-17   
206-867 7   5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2019-07-15   
206-867 8   5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2019-07-15   
206-867 9   829J PAETEC ITEL, LLC 674   2019-05-01   
206-876 A STTLWA06DSE  7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
206-876 0   6529 T-MOBILE USA, INC. 674   2006-11-11   
206-876 1   7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
206-876 2   7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
206-876 3   7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
206-876 4   7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
206-876 5   7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
206-876 6   7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
206-876 7   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2005-05-08   
206-876 8   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2005-05-08   
206-876 9   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2005-05-08   
206-877 A STTLWAWBDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 674      
206-877 0   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 674      
206-877 2   6010 NEW CINGULAR WIRELESS PCS, LLC 674   2006-01-23   
206-877 3   6010 NEW CINGULAR WIRELESS PCS, LLC 674   2006-01-23   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 >>

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.