It can be anything! An apex, subdomain, or even a URL.
Results for*.appdeployextension.coresvc-gallatin.cosmic.partner.outlook.cn
www.*.appdeployextension.coresvc-gallatin.cosmic.partner.outlook.cnappdeployextension.coresvc-gallatin.cosmic.partner.outlook.cncoresvc-gallatin.cosmic.partner.outlook.cncosmic.partner.outlook.cnpartner.outlook.cnoutlook.cncn