The host at this IP address is running a malware botnet controller which is being used to control infected computers (bots) around the globe using a trojan horse.
Malware botnet controller located at 212.109.196.83 on port 443:
$ telnet 212.109.196.83 443
Trying 212.109.196.83…
Connected to 212.109.196.83.
Escape character is ‘^]’
gc-distribution.biz. 60 IN A 212.109.196.83