It can be anything! An apex, subdomain, or even a URL.
Results forbritishironspares.com.gurmesepet.com.informationarbitrage.org
www.britishironspares.com.gurmesepet.com.informationarbitrage.orgcom.gurmesepet.com.informationarbitrage.orggurmesepet.com.informationarbitrage.orgcom.informationarbitrage.orginformationarbitrage.orgorg