51.158.152.5 - why is ace_engine.exe trying to connect to it?

Avast warns me many times during the day that ace_engine.exe tries to connect to the address: http://51.158.152.5:8081/(and then parameters).

Why is ace doing it and why this address is on Avast’s Blacklist?

This is one of Ace Stream servers (sync/EPG related).

We don’t have any idea. Perhaps, you should ask Avast for (assuming that you’re not add this IP to blacklist by mistake)?