It can be anything! An apex, subdomain, or even a URL.
Results forc3scs.jp.msn.com.office.testoffice.proxyautomation.myshn.eu
www.c3scs.jp.msn.com.office.testoffice.proxyautomation.myshn.eujp.msn.com.office.testoffice.proxyautomation.myshn.eumsn.com.office.testoffice.proxyautomation.myshn.eucom.office.testoffice.proxyautomation.myshn.euoffice.testoffice.proxyautomation.myshn.eutestoffice.proxyautomation.myshn.euproxyautomation.myshn.eumyshn.eueu