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 <<>> 104.21.19.51
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 48170
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.19.51.			IN	A

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

;; Query time: 57 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Thu Feb 17 18:34:41 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 51.19.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 51.19.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
183.83.91.255 attackbots
Honeypot attack, port: 445, PTR: broadband.actcorp.in.
2020-03-14 03:23:20
140.143.73.184 attackspam
Mar 13 19:16:00 vmd17057 sshd[6613]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.143.73.184 
Mar 13 19:16:02 vmd17057 sshd[6613]: Failed password for invalid user wrchang from 140.143.73.184 port 55794 ssh2
...
2020-03-14 03:20:11
116.87.89.39 attackbotsspam
Honeypot attack, port: 5555, PTR: 39.89.87.116.starhub.net.sg.
2020-03-14 03:18:39
159.203.82.179 attackbotsspam
IP blocked
2020-03-14 03:32:45
101.109.250.69 attackspam
Automatic report - Port Scan Attack
2020-03-14 03:40:51
218.246.34.214 attackbotsspam
Mar 13 17:24:45 localhost sshd[94134]: Invalid user masespectaculo from 218.246.34.214 port 42168
Mar 13 17:24:45 localhost sshd[94134]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=218.246.34.214
Mar 13 17:24:45 localhost sshd[94134]: Invalid user masespectaculo from 218.246.34.214 port 42168
Mar 13 17:24:46 localhost sshd[94134]: Failed password for invalid user masespectaculo from 218.246.34.214 port 42168 ssh2
Mar 13 17:29:37 localhost sshd[94604]: Invalid user masespectaculo from 218.246.34.214 port 39918
...
2020-03-14 03:07:08
49.235.73.150 attackspambots
2020-03-13T17:24:02.829347v22018076590370373 sshd[21202]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.235.73.150  user=root
2020-03-13T17:24:04.404475v22018076590370373 sshd[21202]: Failed password for root from 49.235.73.150 port 46176 ssh2
2020-03-13T17:27:33.247683v22018076590370373 sshd[23093]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.235.73.150  user=root
2020-03-13T17:27:35.123837v22018076590370373 sshd[23093]: Failed password for root from 49.235.73.150 port 57394 ssh2
2020-03-13T17:38:21.477114v22018076590370373 sshd[32640]: Invalid user alexk from 49.235.73.150 port 34596
...
2020-03-14 03:32:02
140.143.30.191 attack
Feb  5 20:23:52 pi sshd[1204]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.143.30.191 
Feb  5 20:23:54 pi sshd[1204]: Failed password for invalid user lso from 140.143.30.191 port 46062 ssh2
2020-03-14 03:30:37
142.44.160.214 attackbotsspam
2020-03-13 11:58:50,205 fail2ban.actions        [22360]: NOTICE  [sshd] Ban 142.44.160.214
2020-03-13 12:44:04,535 fail2ban.actions        [22360]: NOTICE  [sshd] Ban 142.44.160.214
2020-03-13 13:31:59,063 fail2ban.actions        [22360]: NOTICE  [sshd] Ban 142.44.160.214
2020-03-13 14:19:29,337 fail2ban.actions        [22360]: NOTICE  [sshd] Ban 142.44.160.214
2020-03-13 14:59:48,101 fail2ban.actions        [22360]: NOTICE  [sshd] Ban 142.44.160.214
...
2020-03-14 03:01:03
222.186.173.215 attackbotsspam
2020-03-13T19:53:51.151196vps773228.ovh.net sshd[22610]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.173.215  user=root
2020-03-13T19:53:53.091691vps773228.ovh.net sshd[22610]: Failed password for root from 222.186.173.215 port 16820 ssh2
2020-03-13T19:53:56.669573vps773228.ovh.net sshd[22610]: Failed password for root from 222.186.173.215 port 16820 ssh2
2020-03-13T19:53:51.151196vps773228.ovh.net sshd[22610]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.173.215  user=root
2020-03-13T19:53:53.091691vps773228.ovh.net sshd[22610]: Failed password for root from 222.186.173.215 port 16820 ssh2
2020-03-13T19:53:56.669573vps773228.ovh.net sshd[22610]: Failed password for root from 222.186.173.215 port 16820 ssh2
2020-03-13T19:53:51.151196vps773228.ovh.net sshd[22610]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.173.215  user=root
2020-03-
...
2020-03-14 03:08:55
142.44.160.173 attackbots
Jan 15 22:06:50 pi sshd[32094]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=142.44.160.173 
Jan 15 22:06:52 pi sshd[32094]: Failed password for invalid user dave from 142.44.160.173 port 58818 ssh2
2020-03-14 03:01:23
140.143.208.132 attackspam
Jan 24 12:53:49 pi sshd[12477]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.143.208.132 
Jan 24 12:53:51 pi sshd[12477]: Failed password for invalid user named from 140.143.208.132 port 51194 ssh2
2020-03-14 03:40:24
189.78.150.208 attackbots
Unauthorized connection attempt from IP address 189.78.150.208 on Port 445(SMB)
2020-03-14 03:21:47
220.177.145.12 attackspam
MultiHost/MultiPort Probe, Scan, Hack -
2020-03-14 03:19:30
188.166.150.17 attack
Jan 16 18:24:19 pi sshd[5570]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=188.166.150.17  user=root
Jan 16 18:24:21 pi sshd[5570]: Failed password for invalid user root from 188.166.150.17 port 56567 ssh2
2020-03-14 03:09:56

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