I have a site with no sub-domains that is set to resolve to the www version in GWT. Likewise it has the standard .htaccess redirect to send all visitors to the www version of any page. It has worked well for year so where could these 75 new sub-domains for the non www version of my site be coming from?
I can't find them either, if that means anything, GWT just says they exist, not what they are.
