It can be anything! An apex, subdomain, or even a URL.
Results forteams.skype.com.office.proxy-o365-lab-eu.cloudexperte.myshn.eu
www.teams.skype.com.office.proxy-o365-lab-eu.cloudexperte.myshn.euskype.com.office.proxy-o365-lab-eu.cloudexperte.myshn.eucom.office.proxy-o365-lab-eu.cloudexperte.myshn.euoffice.proxy-o365-lab-eu.cloudexperte.myshn.euproxy-o365-lab-eu.cloudexperte.myshn.eucloudexperte.myshn.eumyshn.eueu