Office 365: New URLs and IP address ranges introduced

For more information, see the Change notification for Office 365 URLs and IP address ranges TechNet site.

It’s highly recommended you add the new URLs and IP address ranges to the allow list of your firewall/proxy solution as soon as possible.

November 5, 2013

Added Yammer URLs: *.yammerusercontent.com & *.assets-yammer.com

Added Office 365 IPs: 157.56.138.141, 157.56.138.142, 157.56.138.143

November 18, 2013

Added new IP range 111.221.24.0/21

Until later,
Henrik Walther

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