It can be anything! An apex, subdomain, or even a URL.
Results for*.onenote.com.office.o365.phoenixprod.myshn.eu
www.*.onenote.com.office.o365.phoenixprod.myshn.euonenote.com.office.o365.phoenixprod.myshn.eucom.office.o365.phoenixprod.myshn.euoffice.o365.phoenixprod.myshn.euo365.phoenixprod.myshn.euphoenixprod.myshn.eumyshn.eueu