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