It can be anything! An apex, subdomain, or even a URL.
Results foractivedirectory.windowsazure.com.office.laboratories-normon.normon.myshn.eu
www.activedirectory.windowsazure.com.office.laboratories-normon.normon.myshn.euwindowsazure.com.office.laboratories-normon.normon.myshn.eucom.office.laboratories-normon.normon.myshn.euoffice.laboratories-normon.normon.myshn.eulaboratories-normon.normon.myshn.eunormon.myshn.eumyshn.eueu