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: None

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 <<>> 104.21.53.187
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 28059
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.53.187.			IN	A

;; AUTHORITY SECTION:
.			143	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022021702 1800 900 604800 86400

;; Query time: 64 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 10:12:50 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 187.53.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 187.53.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
27.221.97.4 attackspam
2020-06-20T20:06:11.190482galaxy.wi.uni-potsdam.de sshd[22173]: Invalid user developer from 27.221.97.4 port 55384
2020-06-20T20:06:11.195807galaxy.wi.uni-potsdam.de sshd[22173]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=27.221.97.4
2020-06-20T20:06:11.190482galaxy.wi.uni-potsdam.de sshd[22173]: Invalid user developer from 27.221.97.4 port 55384
2020-06-20T20:06:13.146707galaxy.wi.uni-potsdam.de sshd[22173]: Failed password for invalid user developer from 27.221.97.4 port 55384 ssh2
2020-06-20T20:07:53.770536galaxy.wi.uni-potsdam.de sshd[22332]: Invalid user bruce from 27.221.97.4 port 38512
2020-06-20T20:07:53.775098galaxy.wi.uni-potsdam.de sshd[22332]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=27.221.97.4
2020-06-20T20:07:53.770536galaxy.wi.uni-potsdam.de sshd[22332]: Invalid user bruce from 27.221.97.4 port 38512
2020-06-20T20:07:55.730672galaxy.wi.uni-potsdam.de sshd[22332]: Failed password 
...
2020-06-21 02:19:46
85.239.35.199 attackbots
Jun 20 20:19:34 home sshd[28381]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=85.239.35.199
Jun 20 20:19:35 home sshd[28380]: Failed none for invalid user  from 85.239.35.199 port 19390 ssh2
Jun 20 20:19:36 home sshd[28381]: Failed password for invalid user admin from 85.239.35.199 port 19706 ssh2
...
2020-06-21 02:25:15
162.243.138.34 attackspambots
firewall-block, port(s): 2379/tcp
2020-06-21 02:45:54
180.101.147.147 attackspam
Jun 20 20:50:26 root sshd[10385]: Invalid user king from 180.101.147.147
...
2020-06-21 02:28:47
138.68.237.12 attackspam
Jun 20 17:50:24 scw-6657dc sshd[12474]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.68.237.12
Jun 20 17:50:24 scw-6657dc sshd[12474]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.68.237.12
Jun 20 17:50:26 scw-6657dc sshd[12474]: Failed password for invalid user gcr from 138.68.237.12 port 42284 ssh2
...
2020-06-21 02:29:12
103.93.178.163 attackspambots
DATE:2020-06-20 19:50:24, IP:103.93.178.163, PORT:telnet Telnet brute force auth on honeypot server (epe-honey1-hq)
2020-06-21 02:24:52
118.89.115.224 attack
Jun 20 19:47:48 inter-technics sshd[5323]: Invalid user pdm from 118.89.115.224 port 35494
Jun 20 19:47:48 inter-technics sshd[5323]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=118.89.115.224
Jun 20 19:47:48 inter-technics sshd[5323]: Invalid user pdm from 118.89.115.224 port 35494
Jun 20 19:47:49 inter-technics sshd[5323]: Failed password for invalid user pdm from 118.89.115.224 port 35494 ssh2
Jun 20 19:50:40 inter-technics sshd[5473]: Invalid user ftptest from 118.89.115.224 port 59882
...
2020-06-21 02:13:01
92.53.96.221 attackbotsspam
Sql/code injection probe
2020-06-21 02:40:54
218.92.0.216 attackspam
$f2bV_matches | Triggered by Fail2Ban at Vostok web server
2020-06-21 02:23:57
51.161.45.65 attack
2020-06-20T20:04:55+0200 Failed SSH Authentication/Brute Force Attack. (Server 9)
2020-06-21 02:26:33
188.16.146.220 attack
firewall-block, port(s): 8080/tcp
2020-06-21 02:39:48
36.255.222.44 attackbots
$f2bV_matches
2020-06-21 02:42:57
209.182.219.165 attackspambots
2020-06-20T19:39:57.727464ns386461 sshd\[6709\]: Invalid user rr from 209.182.219.165 port 54547
2020-06-20T19:39:57.733601ns386461 sshd\[6709\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=209.182.219.165
2020-06-20T19:39:59.602631ns386461 sshd\[6709\]: Failed password for invalid user rr from 209.182.219.165 port 54547 ssh2
2020-06-20T19:50:20.522065ns386461 sshd\[15700\]: Invalid user gold from 209.182.219.165 port 34107
2020-06-20T19:50:20.526764ns386461 sshd\[15700\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=209.182.219.165
...
2020-06-21 02:36:53
185.143.75.153 attackbots
Jun 19 18:57:45 websrv1.aknwsrv.net postfix/smtpd[2260573]: warning: unknown[185.143.75.153]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jun 19 18:58:31 websrv1.aknwsrv.net postfix/smtpd[2260573]: warning: unknown[185.143.75.153]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jun 19 18:59:16 websrv1.aknwsrv.net postfix/smtpd[2260573]: warning: unknown[185.143.75.153]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jun 19 19:00:02 websrv1.aknwsrv.net postfix/smtpd[2260573]: warning: unknown[185.143.75.153]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jun 19 19:00:47 websrv1.aknwsrv.net postfix/smtpd[2260573]: warning: unknown[185.143.75.153]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
2020-06-21 02:07:56
118.99.104.141 attack
Jun 20 18:37:16 django-0 sshd[17711]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=118.99.104.141  user=root
Jun 20 18:37:18 django-0 sshd[17711]: Failed password for root from 118.99.104.141 port 43186 ssh2
...
2020-06-21 02:40:26

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