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.

Switch: STTLWA06DSE

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
206-435 A Seattle WA 7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
206-576 A Seattle WA 7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
206-629 A Richmond Beach WA 7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
206-753 A Seattle WA 7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
206-876 A Seattle WA 7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
253-359 A Tacoma WA 7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
253-478 A Kent WA 7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
253-652 A Des Moines WA 7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
253-737 A Auburn WA 7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
360-217 A Snohomish WA 7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
360-625 A Enumclaw WA 7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
360-628 A Olympia WA 7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
360-965 A Marysville WA 7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
425-225 A Silver Lake WA 7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
425-247 A Bellevue WA 7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
425-405 A Everett WA 7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
425-496 A Renton WA 7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
425-569 A Maple Valley WA 7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
425-629 A Kirkland WA 7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
425-677 A Issaquah WA 7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
425-678 A Halls Lake WA 7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
425-686 A Bothell WA 7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      
425-691 A Bellevue WA 7455 LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 674      

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.