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 <<>> 104.21.51.104
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 59059
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.51.104.			IN	A

;; AUTHORITY SECTION:
.			187	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022021700 1800 900 604800 86400

;; Query time: 68 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Thu Feb 17 23:37:35 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 104.51.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 104.51.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
218.92.0.220 attackbots
Aug 10 23:25:03 dignus sshd[18293]: Failed password for root from 218.92.0.220 port 55960 ssh2
Aug 10 23:25:05 dignus sshd[18293]: Failed password for root from 218.92.0.220 port 55960 ssh2
Aug 10 23:25:10 dignus sshd[18379]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=218.92.0.220  user=root
Aug 10 23:25:12 dignus sshd[18379]: Failed password for root from 218.92.0.220 port 28761 ssh2
Aug 10 23:25:14 dignus sshd[18379]: Failed password for root from 218.92.0.220 port 28761 ssh2
...
2020-08-11 14:38:38
177.1.213.19 attack
2020-08-11T05:20:01.190352shield sshd\[875\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.1.213.19  user=root
2020-08-11T05:20:03.454318shield sshd\[875\]: Failed password for root from 177.1.213.19 port 17598 ssh2
2020-08-11T05:24:54.613249shield sshd\[1408\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.1.213.19  user=root
2020-08-11T05:24:56.099501shield sshd\[1408\]: Failed password for root from 177.1.213.19 port 14545 ssh2
2020-08-11T05:29:36.433611shield sshd\[1734\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=177.1.213.19  user=root
2020-08-11 14:06:58
192.99.4.59 attackspambots
192.99.4.59 - - [11/Aug/2020:06:55:14 +0100] "POST /wp-login.php HTTP/1.1" 200 6287 "-" "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.80 Safari/537.36"
192.99.4.59 - - [11/Aug/2020:06:57:57 +0100] "POST /wp-login.php HTTP/1.1" 200 6287 "-" "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.80 Safari/537.36"
192.99.4.59 - - [11/Aug/2020:07:00:59 +0100] "POST /wp-login.php HTTP/1.1" 200 6287 "-" "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.80 Safari/537.36"
...
2020-08-11 14:09:08
49.88.112.74 attackbotsspam
Aug 11 07:47:55 mx sshd[278795]: Failed password for root from 49.88.112.74 port 35242 ssh2
Aug 11 07:49:20 mx sshd[278797]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.88.112.74  user=root
Aug 11 07:49:22 mx sshd[278797]: Failed password for root from 49.88.112.74 port 30662 ssh2
Aug 11 07:50:34 mx sshd[278803]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.88.112.74  user=root
Aug 11 07:50:37 mx sshd[278803]: Failed password for root from 49.88.112.74 port 42908 ssh2
...
2020-08-11 14:04:09
104.215.22.26 attack
2020-08-11 07:54:43 dovecot_login authenticator failed for \(ADMIN\) \[104.215.22.26\]: 535 Incorrect authentication data \(set_id=alica.levenhagen@jugend-ohne-grenzen.net\)
2020-08-11 07:54:43 dovecot_login authenticator failed for \(ADMIN\) \[104.215.22.26\]: 535 Incorrect authentication data \(set_id=jonas.bathke@jugend-ohne-grenzen.net\)
2020-08-11 07:54:43 dovecot_login authenticator failed for \(ADMIN\) \[104.215.22.26\]: 535 Incorrect authentication data \(set_id=info@jugend-ohne-grenzen.net\)
2020-08-11 07:56:47 dovecot_login authenticator failed for \(ADMIN\) \[104.215.22.26\]: 535 Incorrect authentication data \(set_id=alica.levenhagen@jugend-ohne-grenzen.net\)
2020-08-11 07:56:47 dovecot_login authenticator failed for \(ADMIN\) \[104.215.22.26\]: 535 Incorrect authentication data \(set_id=info@jugend-ohne-grenzen.net\)
2020-08-11 07:56:47 dovecot_login authenticator failed for \(ADMIN\) \[104.215.22.26\]: 535 Incorrect authentication data \(set_id=jonas.bathke@jugend-ohne-gr
...
2020-08-11 14:27:27
139.155.76.135 attack
Aug 11 06:06:53 web-main sshd[816254]: Failed password for root from 139.155.76.135 port 46372 ssh2
Aug 11 06:11:05 web-main sshd[816283]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=139.155.76.135  user=root
Aug 11 06:11:06 web-main sshd[816283]: Failed password for root from 139.155.76.135 port 59342 ssh2
2020-08-11 14:35:25
110.39.7.4 attack
Tried sshing with brute force.
2020-08-11 14:36:33
165.227.96.127 attackspambots
2020-08-11T06:07:40.620365shield sshd\[6810\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=165.227.96.127  user=root
2020-08-11T06:07:42.708395shield sshd\[6810\]: Failed password for root from 165.227.96.127 port 42104 ssh2
2020-08-11T06:12:36.734353shield sshd\[7579\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=165.227.96.127  user=root
2020-08-11T06:12:39.123589shield sshd\[7579\]: Failed password for root from 165.227.96.127 port 52562 ssh2
2020-08-11T06:17:24.152622shield sshd\[7958\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=165.227.96.127  user=root
2020-08-11 14:17:41
138.97.219.92 attackspam
Automatic report - Port Scan Attack
2020-08-11 14:41:35
8.48.134.34 attack
Unauthorized IMAP connection attempt
2020-08-11 14:04:29
106.52.251.24 attack
Aug 11 08:17:07 hosting sshd[11582]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.52.251.24  user=root
Aug 11 08:17:09 hosting sshd[11582]: Failed password for root from 106.52.251.24 port 44114 ssh2
...
2020-08-11 14:06:35
46.101.200.68 attackspambots
$f2bV_matches
2020-08-11 14:24:37
82.80.164.229 attackbotsspam
Automatic report - Port Scan Attack
2020-08-11 14:36:14
182.61.168.185 attackspam
Aug 11 06:34:34 vm1 sshd[6784]: Failed password for root from 182.61.168.185 port 42474 ssh2
...
2020-08-11 14:05:43
45.88.12.72 attackspam
Aug 11 04:57:29 jumpserver sshd[105429]: Failed password for root from 45.88.12.72 port 47314 ssh2
Aug 11 04:59:46 jumpserver sshd[105436]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=45.88.12.72  user=root
Aug 11 04:59:47 jumpserver sshd[105436]: Failed password for root from 45.88.12.72 port 54058 ssh2
...
2020-08-11 14:45:34

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