Office 365 URLs and IP address ranges

To ensure optimal connectivity and performance for Microsoft 365 services - including Teams, Exchange Online, SharePoint, and OneDrive, it's important to allow Microsoft’s required URLs and IP ranges through your network and firewall.

Where to Find the Latest Information

Microsoft maintains an up-to-date list of required endpoints here: Microsoft 365 URLs and IP address ranges

This list is updated regularly and includes:

• Required domains and IPs for each service
• Port and protocol details
• Recommendations for proxy bypass and direct internet access

Best Practices

• Allow direct access to Microsoft 365 endpoints, especially for Teams and Exchange to reduce latency and improve media quality.
• Subscribe to the RSS feed on the Microsoft page to stay informed about changes.
• Remove any legacy references to Skype for Business, which has been retired.