[Updated on 7/6/2018 to reflect changes in the preview]
Microsoft recently published a set of connectivity principles for Office 365 which provides concise guidance on the recommended ways of achieving optimal performance and connectivity to Office 365. The first of these principles is to Identify and differentiate Office 365 network traffic using Microsoft published endpoints. Endpoints include IP Addresses and URLs that are used to connect to Office 365.
Scenarios where you might need this data include:
Originally on 4/2/2018 (and updated on 7/6/2018) we released a preview of a new web service that publishes these endpoints making it easier for enterprise customers to evaluate, configure, and stay up to date with changes in Office 365 network endpoints. These web services will replace the HTML, XML, and RSS data published today at http://aka.ms/o365ip. The current XML file will no longer be available from October 2nd, 2018. We will be replacing the HTML and RSS output formats with new noes generated from the web services. Usage documentation for the IP Address and URL web services are detailed in Managing Office 365 Endpoints – Web Service.
Key updates in the 7/6/2018 preview:
We are also publishing three categories for Office 365 network endpoints as attributes of this data:
Use of these categories, how they simplify connectivity to Office 365, and what actions you can take to make use of them is detailed in Office 365 Network Connectivity Principles.
Benefits for administrators from the Office 365 IP Address and URLs web service and the new categories include:
With this announcement we will be asking customers who use the previous IP/URL publishing in HTML, XML, and RSS to migrate to these web services.
During preview we’ll work to ensure that the data is accurate, but we will not be providing support outside of business hours. We will be seeking feedback from network device vendors and enterprise customers. The web services are in preview now, and we encourage you to start migrating any scripts that you have for working with this data today. While in preview, you should not rely on the data from the web services in production. We plan to make these supported and with GA status in the coming months.
There is a sample PowerShell script on the IP/URL web service usage documentation page so please try it out and let us know your feedback.
Documentation and links:
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