It can be anything! An apex, subdomain, or even a URL.
Results for*.msocdn.com.office.yj-ms0365-one-dirve.bt.myshn.eu
www.*.msocdn.com.office.yj-ms0365-one-dirve.bt.myshn.eumsocdn.com.office.yj-ms0365-one-dirve.bt.myshn.eucom.office.yj-ms0365-one-dirve.bt.myshn.euoffice.yj-ms0365-one-dirve.bt.myshn.euyj-ms0365-one-dirve.bt.myshn.eubt.myshn.eumyshn.eueu