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Office 365 URL and IP Address Ranges for Office 365 Dedicated/ITAR (vNext)
Content provided by Microsoft
Applies to: Microsoft Business Productivity Online DedicatedMicrosoft Business Productivity Online Suite Federal
Assume that your organization uses Office 365 dedicated/ITAR (vNext), and that it also restricts computers on the network from connecting to the Internet. In this situation, you must include a list of endpoints (FQDNS, ports, URLs, and IPv4 and IPv6 address ranges) in your outbound allow lists to make sure that your computers can successfully use Office 365 dedicated/ITAR (vNext).
We publish all changes to the FQDNs, ports, URLs, and IPv4 and IPv6 address ranges in one central location: