The 253-203 exchange is serviced by the following companies within the TACOMA ratecenter.
"MCLEODUSA TELECOMMUNICATIONS SERVICES, INC.- WA"
Call are routed trough OCN 2981 and CLLI - TKWLWANNDS0 (Common Language Location Identifier Code) and Point of Interface (POI) switch which is located in TUKWILA.
Who's number is 253-203 Numbers?