How to detect AND rewrite (RewriteRule) SubSubDomain.SubDomain.domain.com to NewSubSubDomain.SubDomain.NewDomain.com SubSubDomain Becomes a NEWWORD NewSubSubDomain SubDomain remains the same. domain.com is changed to a NewDomain.com Both SubSubDomain & SubDomain are always changing. For SubSubDomain, I need to change it to a new word. The old SubSubDomain is always changing but the new NewSubSubDomain is a constant in the new url. For SubDomain, it is always changing but I just need to capture it and put the same SubDomain into the new url. All file structure after domain.com will be the same on new domain. For example, Old cellphone.nokia.domain.com/?subid=3g New newcellphone.nokia.newdomain.com/?subid=3g Old camera.cannon.domain.com/?subid=dslr New newcamera.cannon.newdomain.com/?subid=dslr Only those in bold need to change.