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
206-478 6 STTLWA060MD  5562 METROPCS, INC. 674      
206-478 7 STTLWA060MD  5562 METROPCS, INC. 674      
206-478 8 STTLWA060MD  5562 METROPCS, INC. 674      
206-478 9 STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-479 A STTLWAWBDS1  483E ONVOY, LLC - WA 674      
206-480 A STTNWAHODSC  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674      
206-480 0 STTLWA030MD  841C INTRADO COMMUNICATIONS, LLC 674   2017-08-01   
206-480 1 STTLWAWBDSH  159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 674   2017-08-07   
206-480 2 STTNWAHODSC  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2017-07-31   
206-480 3 STTNWAHODSC  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2017-07-31   
206-480 4 STTNWAHODSC  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2017-07-31   
206-480 5 STTNWAHODSC  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2017-07-31   
206-480 6 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2017-08-11   
206-480 7 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2017-08-11   
206-480 8 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2017-08-11   
206-480 9 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2017-08-11   
206-481 A STTLWA05DS0  9638 QWEST CORPORATION 674      
206-481 0 STTLWA05DS0  9638 QWEST CORPORATION 674   2016-06-04   
206-481 1 STTLWA05DS0  9638 QWEST CORPORATION 674   2016-06-04   
206-481 2 STTLWA05DS0  9638 QWEST CORPORATION 674   2016-06-04   
206-481 3 STTLWA05DS0  9638 QWEST CORPORATION 674   2016-06-04   
206-481 4 STTLWA05DS0  9638 QWEST CORPORATION 674   2016-06-04   
206-481 5 STTLWA05DS0  9638 QWEST CORPORATION 674   2016-06-04   
206-481 6 STTLWA05DS0  9638 QWEST CORPORATION 674   2016-06-04   
206-481 7 STTLWA05DS0  9638 QWEST CORPORATION 674   2016-06-04   
206-481 8 STTLWA05DS0  9638 QWEST CORPORATION 674   2016-06-04   
206-481 9 STTLWA05DS0  9638 QWEST CORPORATION 674   2016-06-04   
206-482 A PLSBWAXXX0X  6010 NEW CINGULAR WIRELESS PCS, LLC 674      
206-482 0 STTLWAGAAMD  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2016-03-07   
206-482 1 STTLWAGAAMD  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2016-03-07   
206-482 2 STTLWAGAAMD  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2016-04-04   
206-482 3 STTLWAGAAMD  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2016-04-04   
206-482 4 STTLWAGAAMD  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2016-05-02   
206-482 5 STTLWAGAAMD  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2016-05-02   
206-482 6 PLSBWAXXX0X  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2016-03-06   
206-482 7 PLSBWAXXX0X  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2016-03-06   
206-482 8 PLSBWAXXX0X  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2016-03-06   
206-482 9 PLSBWAXXX0X  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2016-03-06   
206-483 A STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-483 0 STTLWAWBDS1  483E ONVOY, LLC - WA 674   2016-07-16   
206-483 1 STTLWAWBDS1  483E ONVOY, LLC - WA 674   2016-07-16   
206-483 2 STTLWAWBDS1  483E ONVOY, LLC - WA 674   2016-07-16   
206-483 3 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2016-07-16   
206-483 4 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2016-07-16   
206-483 5 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2016-07-16   
206-483 6 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2016-07-16   
206-483 7 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2016-07-16   
206-483 8 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2016-07-16   
206-483 9 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2016-07-15   
206-484 A PLSBWAXXX0X  6010 NEW CINGULAR WIRELESS PCS, LLC 674      
206-485 A STTLWAWBX7Z  006F BANDWIDTH.COM CLEC, LLC - WA 674      
206-485 0 STTLWAWBX7Z  006F BANDWIDTH.COM CLEC, LLC - WA 674   2016-05-09   
206-485 1 STTLWAWBX7Z  006F BANDWIDTH.COM CLEC, LLC - WA 674   2016-05-09   
206-485 2 STTLWAWBX7Z  006F BANDWIDTH.COM CLEC, LLC - WA 674   2016-05-09   
206-485 3 STTLWAWBX7Z  006F BANDWIDTH.COM CLEC, LLC - WA 674   2016-05-09   
206-485 4 STTLWAWBX7Z  006F BANDWIDTH.COM CLEC, LLC - WA 674   2016-05-09   
206-485 5 STTLWAGAAMD  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2016-08-22   
206-485 6 STTLWAGAAMD  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2016-09-02   
206-485 7 PTORWACYDS0  937F ASTOUND BROADBAND, LLC - WA 674   2016-05-20   
206-485 8 STTLWAGAAMD  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2016-09-19   
206-485 9   577F RINGSQUARED TELECOM LLC 674   2016-05-10   
206-486 A STTLWAWBDSH  159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 674      
206-486 0 STTLWAWBDSH  159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 674   2012-03-17   
206-486 1 STTLWAWBDSH  159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 674   2012-04-20   
206-486 2 STTLWAWBDSH  159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 674   2012-03-17   
206-486 3 STTLWAWBDSH  159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 674   2012-04-20   
206-486 4 STTLWAWBDSH  159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 674   2012-08-25   
206-486 5 STTLWAWBDSH  159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 674   2012-03-17   
206-486 6 STTLWAWBDSH  159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 674   2012-08-25   
206-486 7 STTLWAWBDSH  159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 674   2012-03-17   
206-486 8 STTLWAWBDSH  159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 674   2012-03-17   
206-486 9 STTLWAWBDSH  159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 674   2012-03-17   
206-487 A STTLWAGAAMD  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674      
206-487 0 STTLWAGAAMD  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2016-08-11   
206-487 1 STTLWAWBDS1  483E ONVOY, LLC - WA 674   2016-08-12   
206-487 2 STTLWAGAAMD  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2016-08-11   
206-487 3 STTLWAWBDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 674   2016-08-12   
206-487 4 STTLWAWBDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 674   2016-08-12   
206-487 5 STTLWAWBDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 674   2016-08-12   
206-487 6 PLSBWAXXX0X  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2016-08-12   
206-487 7 STTLWAWBDSH  159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 674   2016-08-12   
206-487 8 STTLWA060MD  5562 METROPCS, INC. 674   2016-08-12   
206-487 9 STTLWA060MD  5562 METROPCS, INC. 674   2016-08-12   
206-489 A STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-489 0 STTLWAWBDS1  483E ONVOY, LLC - WA 674   2013-05-20   
206-489 1 TKWLWAZSPS0  7173 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 674   2013-05-27   
206-489 2 STTNWAHODSC  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2013-03-23   
206-489 3 STTNWAHODSC  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2013-03-23   
206-489 4 STTLWAWBDS1  483E ONVOY, LLC - WA 674   2013-05-10   
206-489 5 STTLWA03X7X  829J PAETEC ITEL, LLC 674   2013-05-16   
206-489 6 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2013-05-16   
206-489 7 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2013-05-16   
206-489 8 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2013-02-18   
206-489 9 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2013-02-18   
206-490 A STTLWA06DS0  9638 QWEST CORPORATION 674      
206-491 A STTLWAGAAMD  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674      
206-492 A STTLWAGAPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 674      
206-492 0 STTLWAGAAMD  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2015-11-16   
206-492 1 STTLWAGAAMD  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674   2015-12-31   
206-492 2 STTLWAGAPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 674   2015-11-09   

<< 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: Sun, 01 Jun 2025 02:18:11 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.