It can be anything! An apex, subdomain, or even a URL.
Results forthesoftwareplace.com.www.theplanningclub.com.cahomeschool.life
www.thesoftwareplace.com.www.theplanningclub.com.cahomeschool.lifecom.www.theplanningclub.com.cahomeschool.lifewww.theplanningclub.com.cahomeschool.lifetheplanningclub.com.cahomeschool.lifecom.cahomeschool.lifecahomeschool.lifelife