It can be anything! An apex, subdomain, or even a URL.
Results forext.azure.com.office.fabo365prxy.firstabudhabibank.myshn.eu
www.ext.azure.com.office.fabo365prxy.firstabudhabibank.myshn.euazure.com.office.fabo365prxy.firstabudhabibank.myshn.eucom.office.fabo365prxy.firstabudhabibank.myshn.euoffice.fabo365prxy.firstabudhabibank.myshn.eufabo365prxy.firstabudhabibank.myshn.eufirstabudhabibank.myshn.eumyshn.eueu