It can be anything! An apex, subdomain, or even a URL.
Results forwww.hostmaster.hostmaster.www.38cv93810t1xt127.0-stg-images.allposterss.com
hostmaster.hostmaster.www.38cv93810t1xt127.0-stg-images.allposterss.comhostmaster.www.38cv93810t1xt127.0-stg-images.allposterss.comwww.38cv93810t1xt127.0-stg-images.allposterss.com38cv93810t1xt127.0-stg-images.allposterss.com0-stg-images.allposterss.comallposterss.comcom