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
206-384 3 PLSBWAXXX0X  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2003-08-26   
206-384 4 STTNWAHODSC  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674      
206-384 5 PLSBWAXXX0X  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2003-08-26   
206-384 6 PLSBWAXXX0X  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2003-08-26   
206-384 7 PLSBWAXXX0X  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2003-08-26   
206-384 8 PLSBWAXXX0X  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2003-08-26   
206-384 9 PLSBWAXXX0X  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2003-08-26   
206-385 A STTLWAWBDS1  483E ONVOY, LLC - WA 674      
206-385 0 STTLWAWBDS1  483E ONVOY, LLC - WA 674   2019-05-25   
206-385 1 STTLWAWBDS1  483E ONVOY, LLC - WA 674   2019-05-25   
206-385 2 STTLWAWBDS1  483E ONVOY, LLC - WA 674   2019-05-25   
206-385 3 STTLWAWBDS1  483E ONVOY, LLC - WA 674   2019-05-25   
206-385 4 STTLWAWBDS1  483E ONVOY, LLC - WA 674   2019-05-25   
206-385 5 STTLWAWBDS1  483E ONVOY, LLC - WA 674   2019-05-25   
206-385 6 STTLWAWBDS1  483E ONVOY, LLC - WA 674   2019-05-25   
206-385 7 STTLWAWBDS1  483E ONVOY, LLC - WA 674   2019-05-25   
206-385 8 STTLWAWBDS1  483E ONVOY, LLC - WA 674   2019-05-25   
206-385 9 STTLWAWBDS1  483E ONVOY, LLC - WA 674   2019-05-25   
206-386 A STTLWA06DS6  9638 QWEST CORPORATION 674      
206-387 A STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-387 0 STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-387 1 STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-387 2 STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-387 3 STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-387 4 TKWLWAZSPS0  7173 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 674   2006-02-24   
206-387 5 STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-387 6 STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-387 7 STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-387 8 STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-387 9 STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-388 A TKWLWAZSPS0  7173 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 674      
206-388 0 TKWLWAZSPS0  7173 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 674      
206-388 1 TKWLWAZSPS0  7173 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 674   2004-03-10   
206-388 2 STTNWAHODSC  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2005-01-28   
206-388 3 STTNWAHODSC  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2004-05-01   
206-388 4 STTNWAHODSC  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2004-05-23   
206-388 5 STTNWAHODSC  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2005-02-09   
206-388 6 PLSBWAXXX0X  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2005-03-22   
206-388 7 PLSBWAXXX0X  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2005-03-22   
206-388 8 PLSBWAXXX0X  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2005-03-22   
206-388 9 PLSBWAXXX0X  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2005-03-22   
206-389 A STTLWA06DS4  9638 QWEST CORPORATION 674      
206-390 A PLSBWAXXX0X  6010 NEW CINGULAR WIRELESS PCS, LLC 674      
206-391 A STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-391 0 STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-391 1 STTLWA060MD  5562 METROPCS, INC. 674      
206-391 2 STTLWA060MD  5562 METROPCS, INC. 674      
206-391 3 STTLWA060MD  5562 METROPCS, INC. 674      
206-391 4 STTLWA060MD  5562 METROPCS, INC. 674      
206-391 5 STTLWA060MD  5562 METROPCS, INC. 674      
206-391 6 STTLWA060MD  5562 METROPCS, INC. 674      
206-391 7 STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-391 8 STTLWA060MD  5562 METROPCS, INC. 674      
206-391 9 STTLWA060MD  5562 METROPCS, INC. 674      
206-392 A TKWLWAZSPS0  7173 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 674      
206-393 A STTLWANEDS0  7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 674      
206-393 0 STTLWANEDS0  7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 674      
206-393 1 STTLWANEDS0  7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 674      
206-393 2 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2005-08-01   
206-393 3 STTLWANEDS0  7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 674      
206-393 4 STTLWANEDS0  7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 674      
206-393 5 STTLWANEDS0  7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 674      
206-393 6 STTLWANEDS0  7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 674      
206-393 7 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2005-05-01   
206-393 8 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2005-05-01   
206-393 9 STTLWANEDS0  7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 674      
206-394 A KENTWAOBDS0  9638 QWEST CORPORATION 674      
206-395 A STTLWAWBGT5  795G TELTRUST CORPORATION - WA 674      
206-395 0 STTLWAWBDS1  483E ONVOY, LLC - WA 674   2009-11-22   
206-395 1 STTLWAWBDS1  483E ONVOY, LLC - WA 674   2022-01-05   
206-395 2 STTNWAHODSC  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2010-01-28   
206-395 3 STTNWAHODSC  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2010-02-12   
206-395 4 STTLWAWBX7Z  006F BANDWIDTH.COM CLEC, LLC - WA 674   2010-02-19   
206-395 5 STTLWAWBX7Z  006F BANDWIDTH.COM CLEC, LLC - WA 674   2010-02-19   
206-395 6 STTLWAWBX7Z  006F BANDWIDTH.COM CLEC, LLC - WA 674   2010-02-19   
206-395 7 STTLWAWBDS1  483E ONVOY, LLC - WA 674   2010-01-16   
206-395 8 STTLWAWBX7Z  006F BANDWIDTH.COM CLEC, LLC - WA 674   2010-02-19   
206-395 9 STTLWAWBX7Z  006F BANDWIDTH.COM CLEC, LLC - WA 674   2010-02-19   
206-396 A STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-396 0 STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-396 1 STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-396 2 STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-396 3 STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-396 4 STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-396 5 STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-396 6 STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-396 7 STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-396 8 STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-396 9 STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-397 A STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-397 0 STTLWAWBX7Z  006F BANDWIDTH.COM CLEC, LLC - WA 674   2010-07-10   
206-397 1 STTLWAWBDSH  159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 674   2015-08-29   
206-397 2 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2010-06-19   
206-397 3 STTLWA03X1X  318J COMCAST IP PHONE, LLC 674   2009-12-18   
206-397 4 STTLWA03X1X  318J COMCAST IP PHONE, LLC 674   2009-12-18   
206-397 5 STTLWAGAAMD  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2015-09-07   
206-397 6 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2010-01-08   
206-397 7 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2010-01-08   
206-397 8 STTLWAWBDS1  483E ONVOY, LLC - WA 674   2010-08-04   
206-397 9 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2010-06-19   

<< 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, 16 Oct 2025 03:04:18 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.