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 184.108.40.206 on port 6522 TCP:
$ telnet 220.127.116.11 6522
Connected to 18.104.22.168.
Escape character is ‘^]’
$ dig +short njratfdf.freedynamicdns.org
Referencing malware samples (MD5 hash):
4b169eac01ae414ca663e2f334d97cc3 — AV detection: 58 / 71 (81.69%)