fail2ban bad ip database: ip 210.21.226.2

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ip: 210.21.226.2
hostname: reverse.gdsz.cncnet.net
country: [CN] China
first reported: 28.09.2018 19:41.56 GMT+0100
last reported: 08.01.2019 21:07.08 GMT+0100
time period: 102d 02h 25m 12s
total reports: 4
reported by: 3 host(s)
filter(s): sshd (3)
ssh (1)
tor exit node no
badips.com db
Lookup
  

port scan of '210.21.226.2':

[-hide]
# Nmap 6.40 scan initiated Fri Sep 28 19:42:03 2018 as: /usr/bin/nmap -sU -sS -O 210.21.226.2
Nmap scan report for reverse.gdsz.cncnet.net (210.21.226.2)
Host is up (0.34s latency).
Not shown: 993 open|filtered ports, 984 closed ports
PORT      STATE    SERVICE
22/tcp    open     ssh
135/tcp   filtered msrpc
139/tcp   filtered netbios-ssn
211/tcp   filtered 914c-g
445/tcp   filtered microsoft-ds
593/tcp   filtered http-rpc-epmap
777/tcp   filtered multiling-http
2191/tcp  filtered tvbus
3003/tcp  filtered cgms
4001/tcp  filtered newoak
4444/tcp  filtered krb524
5800/tcp  filtered vnc-http
7512/tcp  filtered unknown
9929/tcp  filtered nping-echo
57294/tcp filtered unknown
65000/tcp filtered unknown
135/udp   filtered msrpc
137/udp   filtered netbios-ns
138/udp   filtered netbios-dgm
139/udp   filtered netbios-ssn
161/udp   open     snmp
500/udp   open     isakmp
1433/udp  filtered ms-sql-s
Aggressive OS guesses: Cisco 3500 XL switch (90%), Blue Coat SG210 proxy server (SGOS 5.2.3.3 - 5.2.3.9) (88%), FreeNAS 0.69RC2 (FreeBSD 6.4-RELEASE) (88%), FreeBSD 6.0-SECURITY (x86) (87%), Blue Coat SG510-series proxy server (SGOS 5.1.3.7) (86%), Blue Coat SG810 web proxy (SGOS 5.3.1.9 - 5.3.3.1) (86%), Blue Coat SGOS 5.5.3.1 (86%), Cisco Catalyst 2960 switch (IOS 12.2) (86%), Yamaha NetVolante RT58i router (86%), Cisco C870 router (IOS 12.4) (86%)
No exact OS matches for host (test conditions non-ideal).

OS detection performed. Please report any incorrect results at http://nmap.org/submit/ .
# Nmap done at Fri Sep 28 20:02:51 2018 -- 1 IP address (1 host up) scanned in 1249.75 seconds
Σ = 23 | Δt = 0.014626026153564s