The 206-307 exchange is serviced by the following companies within the SEATTLE ratecenter.
"NEUTRAL TANDEM-WASHINGTON, LLC - WA"
Call are routed trough OCN 483E and CLLI - STTLWAWBDS1 (Common Language Location Identifier Code) and Point of Interface (POI) switch which is located in SEATTLE.
Who's number is 206-307 Numbers?