Must be a valid IPv4 or IPv6 ip address, e.g. 127.0.0.1 or 2001:DB8:0:0:8:800:200C:417A
Basic Info

City: unknown

Region: unknown

Country: China

Internet Service Provider: unknown

Hostname: unknown

Organization: unknown

Usage Type: unknown

Comments:
No discussion about this IP yet. Click above link to make one.
Comments on same subnet:
No discussion about this subnet yet..
Whois info:
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Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 121.40.57.21
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 6114
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;121.40.57.21.			IN	A

;; AUTHORITY SECTION:
.			345	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022022700 1800 900 604800 86400

;; Query time: 75 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Sun Feb 27 16:43:55 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 21.57.40.121.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 21.57.40.121.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
122.114.15.48 attack
Apr 12 22:33:46 prod4 sshd\[3013\]: Invalid user pos02 from 122.114.15.48
Apr 12 22:33:49 prod4 sshd\[3013\]: Failed password for invalid user pos02 from 122.114.15.48 port 37900 ssh2
Apr 12 22:41:44 prod4 sshd\[6088\]: Failed password for root from 122.114.15.48 port 34048 ssh2
...
2020-04-13 04:57:13
112.85.42.176 attack
Apr 12 20:52:52 localhost sshd[9235]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.85.42.176  user=root
Apr 12 20:52:54 localhost sshd[9235]: Failed password for root from 112.85.42.176 port 43111 ssh2
Apr 12 20:52:58 localhost sshd[9235]: Failed password for root from 112.85.42.176 port 43111 ssh2
Apr 12 20:52:52 localhost sshd[9235]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.85.42.176  user=root
Apr 12 20:52:54 localhost sshd[9235]: Failed password for root from 112.85.42.176 port 43111 ssh2
Apr 12 20:52:58 localhost sshd[9235]: Failed password for root from 112.85.42.176 port 43111 ssh2
Apr 12 20:52:52 localhost sshd[9235]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.85.42.176  user=root
Apr 12 20:52:54 localhost sshd[9235]: Failed password for root from 112.85.42.176 port 43111 ssh2
Apr 12 20:52:58 localhost sshd[9235]: Failed password for
...
2020-04-13 05:03:37
210.212.237.67 attack
Apr 12 20:33:55 game-panel sshd[28935]: Failed password for root from 210.212.237.67 port 36988 ssh2
Apr 12 20:37:50 game-panel sshd[29114]: Failed password for root from 210.212.237.67 port 38120 ssh2
2020-04-13 04:52:50
195.123.209.73 attackbots
2020-04-12T20:37:17.502100shield sshd\[30905\]: Invalid user support from 195.123.209.73 port 52158
2020-04-12T20:37:17.506548shield sshd\[30905\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=195.123.209.73
2020-04-12T20:37:19.544819shield sshd\[30905\]: Failed password for invalid user support from 195.123.209.73 port 52158 ssh2
2020-04-12T20:41:39.799733shield sshd\[31758\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=195.123.209.73  user=root
2020-04-12T20:41:41.475847shield sshd\[31758\]: Failed password for root from 195.123.209.73 port 60856 ssh2
2020-04-13 04:59:59
77.42.84.174 attackbots
Unauthorized connection attempt detected from IP address 77.42.84.174 to port 23
2020-04-13 04:36:06
138.68.234.162 attack
Unauthorized access or intrusion attempt detected from Thor banned IP
2020-04-13 05:08:57
223.247.214.61 attackbots
Apr 13 06:31:36 our-server-hostname postfix/smtpd[7812]: connect from unknown[223.247.214.61]
Apr x@x
Apr x@x
Apr x@x
Apr x@x
Apr x@x
Apr x@x
Apr x@x
Apr x@x
Apr x@x
Apr x@x
Apr x@x


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=223.247.214.61
2020-04-13 04:53:30
110.74.168.234 attackbotsspam
2020-04-12T13:46:20.253927-07:00 suse-nuc sshd[31271]: Invalid user git1 from 110.74.168.234 port 43842
...
2020-04-13 05:07:03
222.186.180.8 attack
Apr 12 23:07:34 contabo sshd[22546]: Failed password for root from 222.186.180.8 port 65146 ssh2
Apr 12 23:07:36 contabo sshd[22546]: Failed password for root from 222.186.180.8 port 65146 ssh2
Apr 12 23:07:36 contabo sshd[22546]: error: maximum authentication attempts exceeded for root from 222.186.180.8 port 65146 ssh2 [preauth]
Apr 12 23:07:40 contabo sshd[22560]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.180.8  user=root
Apr 12 23:07:43 contabo sshd[22560]: Failed password for root from 222.186.180.8 port 2100 ssh2
...
2020-04-13 05:08:07
66.42.20.199 attackbots
Unauthorized connection attempt detected from IP address 66.42.20.199 to port 23
2020-04-13 04:39:25
42.116.110.155 attack
Lines containing failures of 42.116.110.155
Apr 12 22:29:12 kmh-wmh-001-nbg01 sshd[13923]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=42.116.110.155  user=mysql
Apr 12 22:29:14 kmh-wmh-001-nbg01 sshd[13923]: Failed password for mysql from 42.116.110.155 port 56410 ssh2
Apr 12 22:29:16 kmh-wmh-001-nbg01 sshd[13923]: Received disconnect from 42.116.110.155 port 56410:11: Bye Bye [preauth]
Apr 12 22:29:16 kmh-wmh-001-nbg01 sshd[13923]: Disconnected from authenticating user mysql 42.116.110.155 port 56410 [preauth]
Apr 12 22:32:00 kmh-wmh-001-nbg01 sshd[14204]: Invalid user http from 42.116.110.155 port 39492
Apr 12 22:32:00 kmh-wmh-001-nbg01 sshd[14204]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=42.116.110.155 
Apr 12 22:32:02 kmh-wmh-001-nbg01 sshd[14204]: Failed password for invalid user http from 42.116.110.155 port 39492 ssh2


........
-----------------------------------------------
https://www.blocklist.de/en/view.ht
2020-04-13 04:48:38
51.83.42.66 attack
Apr 12 22:37:48 silence02 sshd[25759]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.83.42.66
Apr 12 22:37:50 silence02 sshd[25759]: Failed password for invalid user backgrounds from 51.83.42.66 port 55355 ssh2
Apr 12 22:41:43 silence02 sshd[26020]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.83.42.66
2020-04-13 04:58:35
49.231.5.51 attack
2020-04-12T16:19:26.5084591495-001 sshd[12276]: Failed password for root from 49.231.5.51 port 32924 ssh2
2020-04-12T16:24:20.1854531495-001 sshd[12520]: Invalid user vallerga from 49.231.5.51 port 40590
2020-04-12T16:24:20.1894141495-001 sshd[12520]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.231.5.51
2020-04-12T16:24:20.1854531495-001 sshd[12520]: Invalid user vallerga from 49.231.5.51 port 40590
2020-04-12T16:24:22.2277501495-001 sshd[12520]: Failed password for invalid user vallerga from 49.231.5.51 port 40590 ssh2
2020-04-12T16:29:07.5894011495-001 sshd[12752]: Invalid user weblogic from 49.231.5.51 port 48292
...
2020-04-13 05:00:45
195.181.210.5 attackbotsspam
(sshd) Failed SSH login from 195.181.210.5 (CZ/Czechia/5.210.forpsi.net): 10 in the last 3600 secs
2020-04-13 05:15:42
165.227.51.249 attackspam
Brute force attempt
2020-04-13 04:46:54

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