The host at this IP address is obviously operated by cybercriminals. It 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 194.87.210.74 on port 443 TCP:
$ telnet 194.87.210.74 443
Trying 194.87.210.74…
Connected to 194.87.210.74.
Escape character is ‘^]’
zukayh04.top. 600 IN A 194.87.210.74
zukelx03.top. 600 IN A 194.87.210.74
zuktor05.top. 600 IN A 194.87.210.74