Informations for all IPs Range of Microsoft Service O365 / Azure Azure IP Ranges and Service Tags – Public Cloud https://www.microsoft.com/en-us/download/confirmation.aspx?id=56519 IP Office 365 URLs and address ranges https://docs.microsoft.com/en-us/office365/enterprise/urls-and-ip-address-ranges Site web Azure Range http://iprange.omartin2010.com/