It can be anything! An apex, subdomain, or even a URL.
Results for*.windows.net.office.default.proxyaws.myshn.eu
www.*.windows.net.office.default.proxyaws.myshn.euwindows.net.office.default.proxyaws.myshn.eunet.office.default.proxyaws.myshn.euoffice.default.proxyaws.myshn.eudefault.proxyaws.myshn.euproxyaws.myshn.eumyshn.eueu