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: United States

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 <<>> 104.20.81.131
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 40276
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.20.81.131.			IN	A

;; AUTHORITY SECTION:
.			598	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022021602 1800 900 604800 86400

;; Query time: 61 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Thu Feb 17 07:32:16 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 131.81.20.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 131.81.20.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
106.13.9.75 attack
Feb 17 05:51:55 vtv3 sshd\[31311\]: Invalid user nagios from 106.13.9.75 port 55448
Feb 17 05:51:55 vtv3 sshd\[31311\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.13.9.75
Feb 17 05:51:58 vtv3 sshd\[31311\]: Failed password for invalid user nagios from 106.13.9.75 port 55448 ssh2
Feb 17 05:59:53 vtv3 sshd\[684\]: Invalid user randy from 106.13.9.75 port 44804
Feb 17 05:59:53 vtv3 sshd\[684\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.13.9.75
Feb 23 21:12:25 vtv3 sshd\[3342\]: Invalid user admin from 106.13.9.75 port 37690
Feb 23 21:12:25 vtv3 sshd\[3342\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.13.9.75
Feb 23 21:12:27 vtv3 sshd\[3342\]: Failed password for invalid user admin from 106.13.9.75 port 37690 ssh2
Feb 23 21:18:40 vtv3 sshd\[5236\]: Invalid user bot from 106.13.9.75 port 38716
Feb 23 21:18:40 vtv3 sshd\[5236\]: pam_unix\(sshd:auth\): authentic
2019-07-01 01:21:34
209.97.142.250 attackspambots
Triggered by Fail2Ban at Vostok web server
2019-07-01 00:59:10
92.118.37.86 attackspam
30.06.2019 16:43:33 Connection to port 1371 blocked by firewall
2019-07-01 00:51:36
134.73.161.31 attackbots
Jun 30 15:00:19 xxx sshd[23471]: Invalid user friend from 134.73.161.31 port 60380
Jun 30 15:00:19 xxx sshd[23471]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=134.73.161.31
Jun 30 15:00:21 xxx sshd[23471]: Failed password for invalid user friend from 134.73.161.31 port 60380 ssh2
Jun 30 15:00:21 xxx sshd[23471]: Received disconnect from 134.73.161.31 port 60380:11: Bye Bye [preauth]
Jun 30 15:00:21 xxx sshd[23471]: Disconnected from 134.73.161.31 port 60380 [preauth]
Jun 30 15:08:10 xxx sshd[24083]: Invalid user di from 134.73.161.31 port 45286
Jun 30 15:08:10 xxx sshd[24083]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=134.73.161.31


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=134.73.161.31
2019-07-01 01:13:33
190.110.216.186 attackspam
Jun 30 15:49:54 localhost sshd\[130337\]: Invalid user hoge from 190.110.216.186 port 56327
Jun 30 15:49:54 localhost sshd\[130337\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=190.110.216.186
Jun 30 15:49:56 localhost sshd\[130337\]: Failed password for invalid user hoge from 190.110.216.186 port 56327 ssh2
Jun 30 15:55:19 localhost sshd\[130665\]: Invalid user keith from 190.110.216.186 port 36628
Jun 30 15:55:19 localhost sshd\[130665\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=190.110.216.186
...
2019-07-01 01:34:12
51.75.122.16 attackbots
Jun 30 15:35:58 meumeu sshd[18202]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.75.122.16 
Jun 30 15:36:01 meumeu sshd[18202]: Failed password for invalid user ascension from 51.75.122.16 port 46696 ssh2
Jun 30 15:39:15 meumeu sshd[18619]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.75.122.16 
...
2019-07-01 00:47:00
134.73.161.170 attackspam
Jun 30 15:17:58 mail1 sshd[19061]: Invalid user blackhat from 134.73.161.170 port 48290
Jun 30 15:17:58 mail1 sshd[19061]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=134.73.161.170
Jun 30 15:18:01 mail1 sshd[19061]: Failed password for invalid user blackhat from 134.73.161.170 port 48290 ssh2
Jun 30 15:18:01 mail1 sshd[19061]: Received disconnect from 134.73.161.170 port 48290:11: Bye Bye [preauth]
Jun 30 15:18:01 mail1 sshd[19061]: Disconnected from 134.73.161.170 port 48290 [preauth]


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=134.73.161.170
2019-07-01 01:41:20
178.32.57.140 attackbots
Malicious/Probing: /wp-login.php
2019-07-01 01:11:05
189.91.3.128 attackbots
failed_logins
2019-07-01 01:30:58
207.154.196.231 attack
fail2ban honeypot
2019-07-01 01:05:31
191.53.221.77 attackbots
Jun 30 09:22:02 web1 postfix/smtpd[24162]: warning: unknown[191.53.221.77]: SASL PLAIN authentication failed: authentication failure
...
2019-07-01 01:22:33
128.199.150.231 attack
Jun 30 07:19:31 our-server-hostname postfix/smtpd[17736]: connect from unknown[128.199.150.231]
Jun 30 07:19:31 our-server-hostname postfix/smtpd[17736]: NOQUEUE: reject: RCPT from unknown[128.199.150.231]: 504 5.5.2 : Helo command rejected: need fully-qualified hostname; from=x@x helo=
Jun 30 07:19:31 our-server-hostname postfix/smtpd[17736]: lost connection after RCPT from unknown[128.199.150.231]
Jun 30 07:19:31 our-server-hostname postfix/smtpd[17736]: disconnect from unknown[128.199.150.231]
Jun 30 07:54:01 our-server-hostname postfix/smtpd[29375]: connect from unknown[128.199.150.231]
Jun 30 07:54:01 our-server-hostname postfix/smtpd[29375]: NOQUEUE: reject: RCPT from unknown[128.199.150.231]: 504 5.5.2 : Helo command rejected: need fully-qualified hostname; from=x@x proto=
.... truncated .... 

Jun 30 07:19:31 our-server-hostname postfix/smtpd[17736]: connect from unknown[128.199.150.231]
Jun 30 07:19:31 our-server-hostname postfix/smtpd[17736]: ........
-------------------------------
2019-07-01 01:02:24
51.77.242.176 attackspam
Automatic report - Web App Attack
2019-07-01 01:32:37
190.116.55.89 attack
f2b trigger Multiple SASL failures
2019-07-01 01:14:08
125.64.94.213 attackspambots
Web App Attack
2019-07-01 00:56:32

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