matchmaker IP address

2 months ago I had to request network permission for the matchmaker IP address and port in the business tower we work. Unfortunately we are working in a very secure and closed network and we can't receive anything from the matchmaker without asking the service desk guys to open some ports and IPs.
Now a week ago we couldn't receive any matchmaker requests again... noticed that the matchmaker IP changed. So our service desk had to update the access for this. Quite annoying to be honest.

Now...

matchmaker IP address