It can be anything! An apex, subdomain, or even a URL.
Results forthelearningtrain.com.equusentertainment.net.increasingaccess.org
www.thelearningtrain.com.equusentertainment.net.increasingaccess.orgcom.equusentertainment.net.increasingaccess.orgequusentertainment.net.increasingaccess.orgnet.increasingaccess.orgincreasingaccess.orgorg