I would like to know if Washington international university is accredited. They offer on-line degrees up to PhD.

Washington International University - Wikipedia, the free encyclopedia

No they are not

The Oregon Office of Degree Authorization stated that "[WIU is] operating illegally
WIU is forbidden to advertise or offer its programs in Australia"

Also no where on their web site do they even state they are accredited by the US Dept of Education o any acrediation grouip approved by them