It can be anything! An apex, subdomain, or even a URL.
Results forwww.inc-word-view.officeapps.live.com.office.eucouncilo365proxy.eucouncileupoc.myshn.eu
inc-word-view.officeapps.live.com.office.eucouncilo365proxy.eucouncileupoc.myshn.euofficeapps.live.com.office.eucouncilo365proxy.eucouncileupoc.myshn.eulive.com.office.eucouncilo365proxy.eucouncileupoc.myshn.eucom.office.eucouncilo365proxy.eucouncileupoc.myshn.euoffice.eucouncilo365proxy.eucouncileupoc.myshn.eueucouncilo365proxy.eucouncileupoc.myshn.eueucouncileupoc.myshn.eumyshn.eueu