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
206-453 0   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2007-10-08   
206-453 1   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2007-10-08   
206-453 2   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2007-10-29   
206-453 3   318J COMCAST IP PHONE, LLC 674   2007-10-08   
206-453 4   318J COMCAST IP PHONE, LLC 674   2007-10-08   
206-453 5   318J COMCAST IP PHONE, LLC 674   2007-10-08   
206-453 6   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2008-06-30   
206-453 7   6529 T-MOBILE USA, INC. 674   2007-10-06   
206-453 8   6529 T-MOBILE USA, INC. 674   2007-10-06   
206-453 9   6529 T-MOBILE USA, INC. 674   2007-10-06   
206-454 A TKWLWAZSPS0  7173 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 674      
206-454 0   6529 T-MOBILE USA, INC. 674   2012-08-31   
206-454 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 674   2012-04-17   
206-454 2   7173 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 674   2012-03-24   
206-454 3   7173 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 674   2012-03-24   
206-454 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 674   2012-03-27   
206-454 5   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 674   2012-03-27   
206-454 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 674   2012-03-27   
206-454 7   7173 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 674   2012-06-17   
206-454 8   829J PAETEC ITEL, LLC 674   2012-05-11   
206-454 9   5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2012-09-19   
206-455 A STTNWAHODSC  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674      
206-455 0   5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2007-10-08   
206-455 1   5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2007-10-08   
206-455 2   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2008-06-17   
206-455 3   6529 T-MOBILE USA, INC. 674   2008-06-16   
206-455 4   5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2007-10-24   
206-455 5   5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2007-10-24   
206-455 6   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2008-06-25   
206-455 7   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2008-06-25   
206-455 8   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2008-06-25   
206-455 9   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2008-06-25   
206-456 A STTNWAHODSC  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674      
206-456 0   483E ONVOY, LLC - WA 674      
206-456 1   483E ONVOY, LLC - WA 674      
206-456 2   483E ONVOY, LLC - WA 674      
206-456 3   483E ONVOY, LLC - WA 674   2010-07-19   
206-456 4   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2010-10-06   
206-456 5   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 674   2010-08-14   
206-456 6   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2010-10-06   
206-456 7   483E ONVOY, LLC - WA 674   2010-11-17   
206-456 8   483E ONVOY, LLC - WA 674   2010-11-17   
206-456 9   7173 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 674   2011-04-08   
206-457 A PLSBWAXXX0X  6010 NEW CINGULAR WIRELESS PCS, LLC 674      
206-457 0   483E ONVOY, LLC - WA 674      
206-457 1   483E ONVOY, LLC - WA 674      
206-457 2   006F BANDWIDTH.COM CLEC, LLC - WA 674   2011-06-17   
206-457 3   006F BANDWIDTH.COM CLEC, LLC - WA 674   2011-06-17   
206-457 4   318J COMCAST IP PHONE, LLC 674   2011-07-07   
206-457 5   318J COMCAST IP PHONE, LLC 674   2011-07-07   
206-457 6   6010 NEW CINGULAR WIRELESS PCS, LLC 674   2011-08-23   
206-457 7   6010 NEW CINGULAR WIRELESS PCS, LLC 674   2011-08-23   
206-457 8   318J COMCAST IP PHONE, LLC 674   2011-07-07   
206-457 9   6010 NEW CINGULAR WIRELESS PCS, LLC 674   2011-08-23   
206-458 A STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-458 0   6529 T-MOBILE USA, INC. 674   2008-07-04   
206-458 1   6529 T-MOBILE USA, INC. 674   2008-07-04   
206-458 2   6529 T-MOBILE USA, INC. 674   2008-07-04   
206-458 3   6529 T-MOBILE USA, INC. 674   2008-07-04   
206-458 4   6529 T-MOBILE USA, INC. 674   2008-07-04   
206-458 5   6529 T-MOBILE USA, INC. 674   2008-07-04   
206-458 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 674   2009-08-13   
206-458 7   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 674   2009-08-13   
206-458 8   5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2009-10-05   
206-458 9   6529 T-MOBILE USA, INC. 674   2008-07-04   
206-459 A STTLWAGAAMD  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674      
206-461 A STTLWA06DS0  9638 QWEST CORPORATION 674      
206-462 A STTLWAGAAMD  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674      
206-462 0   5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2007-11-21   
206-462 1   006F BANDWIDTH.COM CLEC, LLC - WA 674   2008-08-07   
206-462 2   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2007-11-23   
206-462 3   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2007-11-23   
206-462 4   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2007-11-23   
206-462 5   6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2007-11-23   
206-462 6   7173 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 674   2007-12-17   
206-462 7   7173 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 674   2008-01-13   
206-462 8   5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2008-02-25   
206-462 9   5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2008-03-17   
206-464 A STTLWA06DS4  9638 QWEST CORPORATION 674      
206-465 A PLSBWAXXX0X  6010 NEW CINGULAR WIRELESS PCS, LLC 674      
206-466 A STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-466 0   483E ONVOY, LLC - WA 674      
206-466 1   318J COMCAST IP PHONE, LLC 674   2010-11-16   
206-466 2   318J COMCAST IP PHONE, LLC 674   2010-11-29   
206-466 3   483E ONVOY, LLC - WA 674      
206-466 4   483E ONVOY, LLC - WA 674   2011-03-21   
206-466 5   318J COMCAST IP PHONE, LLC 674   2011-09-15   
206-466 6   318J COMCAST IP PHONE, LLC 674   2011-09-15   
206-466 7   6529 T-MOBILE USA, INC. 674   2010-09-02   
206-466 8   6529 T-MOBILE USA, INC. 674   2010-09-02   
206-466 9   6529 T-MOBILE USA, INC. 674   2010-09-02   
206-467 A STTLWA06DS4  9638 QWEST CORPORATION 674      
206-468 A STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-468 0   6529 T-MOBILE USA, INC. 674   2014-11-08   
206-468 1   6529 T-MOBILE USA, INC. 674   2014-11-08   
206-468 2   6529 T-MOBILE USA, INC. 674   2014-11-08   
206-468 3   6529 T-MOBILE USA, INC. 674   2014-11-08   
206-468 4   6529 T-MOBILE USA, INC. 674   2014-11-08   
206-468 5   6529 T-MOBILE USA, INC. 674   2014-11-08   
206-468 6   6529 T-MOBILE USA, INC. 674   2014-11-08   

<< 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: LES.NET

Like this site? We accept donations via PayPal.