They recently added more servers for Brazil - This can be annoying depending on your location as the ping can be frustrating to play against.

My understanding just looking up the Servers is they are using Amazon web service for hosting, so its certainly possible there are additional IPS I've missed or they may change it later.

Here are all the IPS I was able to find using Wireshark

18.228.90.183
54.207.104.0/24
15.229.96.172
15.229.96.179

cheers