It can be anything! An apex, subdomain, or even a URL.
Results forvo.msecnd.net.office.fabo365prxy.firstabudhabibank.myshn.eu
www.vo.msecnd.net.office.fabo365prxy.firstabudhabibank.myshn.eumsecnd.net.office.fabo365prxy.firstabudhabibank.myshn.eunet.office.fabo365prxy.firstabudhabibank.myshn.euoffice.fabo365prxy.firstabudhabibank.myshn.eufabo365prxy.firstabudhabibank.myshn.eufirstabudhabibank.myshn.eumyshn.eueu