Published On : April 2, 2018
Microsoft will make some changes to how Office 365 IP Addresses and URLs are published. Starting today (April 2, 2018) we’re providing the data on new REST based Web Services and on October 2nd, we will stop publishing the previous HTML, XML, and RSS format of this data.
How does this affect me?
This data is commonly used by customers for configuring firewalls, proxy servers, and related networking equipment for optimal connectivity to Office 365. If you are using this data today for device configuration and you don’t move to the new IP/URL web services then new servers added for Office 365 may not be accessible to your users. These updates typically occur once a month.
If you are not configuring firewalls, proxy servers or related networking equipment, in this way, you can safely ignore this message.
What do I need to do to prepare for this change?
If you are not using the Office 365 IP Addresses and URLs now, no action is required.
If you are using the Office 365 IP Addresses and URLs to make monthly updates to your firewalls, proxy servers, or other networking devices, then we encourage you to review the new IP/URL Web Services so that you can migrate any process you have related to this data.