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 45.138.72.98 on port 443 TCP:
$ telnet 45.138.72.98 443
Trying 45.138.72.98…
Connected to 45.138.72.98.
Escape character is ‘^]’
axielnfiniity.com. 60 IN A 45.138.72.98
click-mail-id1r2.ru. 60 IN A 45.138.72.98
decrypthelp.hk. 60 IN A 45.138.72.98
platformsforyoutube.top. 60 IN A 45.138.72.98
viewer-mail.ru. 60 IN A 45.138.72.98