fail2ban bad ip database: ip 210.9.148.206

# Nmap 6.40 scan initiated Thu Nov 15 19:03:02 2018 as: /usr/bin/nmap -sU -sS -O 210.9.148.206
Nmap scan report for 210.9.148.206
Host is up (0.23s latency).
Not shown: 1985 closed ports
PORT     STATE         SERVICE
21/tcp   filtered      ftp
22/tcp   filtered      ssh
23/tcp   filtered      telnet
53/tcp   filtered      domain
80/tcp   filtered      http
443/tcp  filtered      https
1723/tcp open          pptp
2000/tcp open          cisco-sccp
8291/tcp filtered      unknown
53/udp   open|filtered domain
67/udp   open|filtered dhcps
500/udp  open          isakmp
1701/udp open|filtered L2TP
1900/udp open|filtered upnp
4500/udp open|filtered nat-t-ike
Device type: general purpose
Running: Linux 2.6.X|3.X
OS CPE: cpe:/o:linux:linux_kernel:2.6 cpe:/o:linux:linux_kernel:3
OS details: Linux 2.6.32 - 3.9
Network Distance: 17 hops

OS detection performed. Please report any incorrect results at http://nmap.org/submit/ .
# Nmap done at Thu Nov 15 19:25:23 2018 -- 1 IP address (1 host up) scanned in 1341.87 seconds