It can be anything! An apex, subdomain, or even a URL.
Results forwww.online.lync.com.office.m365---mcafeecloud.mcafee.myshn.eu
online.lync.com.office.m365---mcafeecloud.mcafee.myshn.eulync.com.office.m365---mcafeecloud.mcafee.myshn.eucom.office.m365---mcafeecloud.mcafee.myshn.euoffice.m365---mcafeecloud.mcafee.myshn.eum365---mcafeecloud.mcafee.myshn.eumcafee.myshn.eumyshn.eueu