Forum Discussion
Unknown Office 365 IP address
I saw at a customer site today, a STUN request going from the client to 13.100.4.192. By looking at the src and dest ports, I would say this is a video session trying to establish a connection to a m...
See that the src and dst ports are on the higher upper side, I'm think they may have CDN defined and that is the agent on the machine? I know Hive agent uses 40K to 69K range. ALso the IP belongs to MSFT.
- The answer is here https://techcommunity.microsoft.com/t5/Skype-Operations-Framework-Skype/Updated-IP-ranges-and-ports-for-Skype-for-Business-Online/ba-p/47470
• New IP ranges: We already started to move the Skype for Business infrastructure to the following port ranges:
o 13.107.64.0/18
o 52.112.0.0/14Hi Leonardo.
Thanks for taking your time to reply, but unfortunately your suggestion is not correct. The IP address 13.100.4.192 is not in the documented new ranges for Office 365 (13.107.64.0/18 and 52.112.0.0/14).
/Kenneth ML
Hi Ken,
I can say, everyone is prone to make a mistake, i'm sure that Microsoft has done the same in not posting that 13.100.4.192 belongs to them.
Looking at whois, you will see that it does belong to them and seeing that it is STUN traffic, its most likely a\v edge services or Microsoft Teams A\V channel...
