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 <<>> 104.21.66.51
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 5528
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.66.51.			IN	A

;; AUTHORITY SECTION:
.			389	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022022000 1800 900 604800 86400

;; Query time: 29 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Sun Feb 20 19:36:08 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 51.66.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 51.66.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
188.166.159.148 attackspam
2019-10-03T07:33:06.429570shield sshd\[19954\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=atom.costtel.com  user=root
2019-10-03T07:33:08.877390shield sshd\[19954\]: Failed password for root from 188.166.159.148 port 33306 ssh2
2019-10-03T07:36:51.072715shield sshd\[20916\]: Invalid user yanjinhu from 188.166.159.148 port 52960
2019-10-03T07:36:51.077985shield sshd\[20916\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=atom.costtel.com
2019-10-03T07:36:53.079781shield sshd\[20916\]: Failed password for invalid user yanjinhu from 188.166.159.148 port 52960 ssh2
2019-10-03 16:24:34
139.199.80.67 attack
2019-09-26 09:38:55,783 fail2ban.actions        [818]: NOTICE  [sshd] Ban 139.199.80.67
2019-09-26 12:49:30,050 fail2ban.actions        [818]: NOTICE  [sshd] Ban 139.199.80.67
2019-09-27 10:34:03,824 fail2ban.actions        [818]: NOTICE  [sshd] Ban 139.199.80.67
...
2019-10-03 16:31:42
103.41.23.76 attack
Oct  3 01:56:59 vtv3 sshd\[28487\]: Invalid user octest from 103.41.23.76 port 58768
Oct  3 01:56:59 vtv3 sshd\[28487\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=103.41.23.76
Oct  3 01:57:01 vtv3 sshd\[28487\]: Failed password for invalid user octest from 103.41.23.76 port 58768 ssh2
Oct  3 02:02:18 vtv3 sshd\[31136\]: Invalid user jira from 103.41.23.76 port 42610
Oct  3 02:02:18 vtv3 sshd\[31136\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=103.41.23.76
Oct  3 02:12:23 vtv3 sshd\[4109\]: Invalid user bkksextoy from 103.41.23.76 port 38510
Oct  3 02:12:23 vtv3 sshd\[4109\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=103.41.23.76
Oct  3 02:12:24 vtv3 sshd\[4109\]: Failed password for invalid user bkksextoy from 103.41.23.76 port 38510 ssh2
Oct  3 02:17:23 vtv3 sshd\[6473\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=10
2019-10-03 16:59:12
189.212.121.171 attack
MultiHost/MultiPort Probe, Scan, Hack -
2019-10-03 16:26:07
222.186.46.48 attack
Portscan or hack attempt detected by psad/fwsnort
2019-10-03 16:48:39
91.121.155.226 attackspambots
Sep 29 22:54:25 eola sshd[10082]: Invalid user adahwai from 91.121.155.226 port 33913
Sep 29 22:54:25 eola sshd[10082]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=91.121.155.226 
Sep 29 22:54:27 eola sshd[10082]: Failed password for invalid user adahwai from 91.121.155.226 port 33913 ssh2
Sep 29 22:54:27 eola sshd[10082]: Received disconnect from 91.121.155.226 port 33913:11: Bye Bye [preauth]
Sep 29 22:54:27 eola sshd[10082]: Disconnected from 91.121.155.226 port 33913 [preauth]
Sep 29 23:10:04 eola sshd[10697]: Invalid user ux from 91.121.155.226 port 58619
Sep 29 23:10:04 eola sshd[10697]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=91.121.155.226 
Sep 29 23:10:06 eola sshd[10697]: Failed password for invalid user ux from 91.121.155.226 port 58619 ssh2
Sep 29 23:10:06 eola sshd[10697]: Received disconnect from 91.121.155.226 port 58619:11: Bye Bye [preauth]
Sep 29 23:10:06 eola s........
-------------------------------
2019-10-03 16:38:51
157.230.168.4 attackbots
Apr 10 09:25:55 vtv3 sshd\[26417\]: Invalid user jenkins from 157.230.168.4 port 58772
Apr 10 09:25:55 vtv3 sshd\[26417\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=157.230.168.4
Apr 10 09:25:56 vtv3 sshd\[26417\]: Failed password for invalid user jenkins from 157.230.168.4 port 58772 ssh2
Apr 10 09:31:52 vtv3 sshd\[29153\]: Invalid user cinstall from 157.230.168.4 port 37996
Apr 10 09:31:52 vtv3 sshd\[29153\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=157.230.168.4
Aug  1 10:18:33 vtv3 sshd\[17383\]: Invalid user connie from 157.230.168.4 port 37708
Aug  1 10:18:33 vtv3 sshd\[17383\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=157.230.168.4
Aug  1 10:18:35 vtv3 sshd\[17383\]: Failed password for invalid user connie from 157.230.168.4 port 37708 ssh2
Aug  1 10:24:02 vtv3 sshd\[20067\]: Invalid user daniel from 157.230.168.4 port 34038
Aug  1 10:24:02 vtv3 sshd\[2006
2019-10-03 16:53:00
119.29.98.253 attack
Oct  2 22:22:14 eddieflores sshd\[1509\]: Invalid user goddard from 119.29.98.253
Oct  2 22:22:14 eddieflores sshd\[1509\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=119.29.98.253
Oct  2 22:22:15 eddieflores sshd\[1509\]: Failed password for invalid user goddard from 119.29.98.253 port 48910 ssh2
Oct  2 22:27:26 eddieflores sshd\[1960\]: Invalid user sinus from 119.29.98.253
Oct  2 22:27:26 eddieflores sshd\[1960\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=119.29.98.253
2019-10-03 16:29:02
146.185.162.244 attackspambots
Oct  3 09:44:24 server sshd\[28625\]: Invalid user httpd from 146.185.162.244 port 33467
Oct  3 09:44:24 server sshd\[28625\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=146.185.162.244
Oct  3 09:44:26 server sshd\[28625\]: Failed password for invalid user httpd from 146.185.162.244 port 33467 ssh2
Oct  3 09:48:45 server sshd\[8568\]: Invalid user dirk from 146.185.162.244 port 54304
Oct  3 09:48:45 server sshd\[8568\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=146.185.162.244
2019-10-03 16:22:19
122.152.197.6 attackspambots
Oct  3 09:46:47 meumeu sshd[6286]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=122.152.197.6 
Oct  3 09:46:48 meumeu sshd[6286]: Failed password for invalid user 0 from 122.152.197.6 port 58544 ssh2
Oct  3 09:51:38 meumeu sshd[6963]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=122.152.197.6 
...
2019-10-03 16:33:24
139.199.100.81 attack
2019-09-28 00:32:03,561 fail2ban.actions        [818]: NOTICE  [sshd] Ban 139.199.100.81
2019-09-28 04:10:09,324 fail2ban.actions        [818]: NOTICE  [sshd] Ban 139.199.100.81
2019-09-28 07:25:08,268 fail2ban.actions        [818]: NOTICE  [sshd] Ban 139.199.100.81
...
2019-10-03 16:34:41
61.155.238.121 attackspambots
Oct  3 11:48:08 taivassalofi sshd[162189]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=61.155.238.121
Oct  3 11:48:09 taivassalofi sshd[162189]: Failed password for invalid user webmail from 61.155.238.121 port 48587 ssh2
...
2019-10-03 16:48:15
124.156.173.209 attackspam
Oct  2 19:21:05 hanapaa sshd\[4544\]: Invalid user redmine from 124.156.173.209
Oct  2 19:21:05 hanapaa sshd\[4544\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=124.156.173.209
Oct  2 19:21:08 hanapaa sshd\[4544\]: Failed password for invalid user redmine from 124.156.173.209 port 33422 ssh2
Oct  2 19:27:09 hanapaa sshd\[5016\]: Invalid user suporte from 124.156.173.209
Oct  2 19:27:09 hanapaa sshd\[5016\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=124.156.173.209
2019-10-03 16:49:00
2.139.215.255 attack
Oct  3 10:07:12 pornomens sshd\[29864\]: Invalid user hadoop from 2.139.215.255 port 53721
Oct  3 10:07:12 pornomens sshd\[29864\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=2.139.215.255
Oct  3 10:07:15 pornomens sshd\[29864\]: Failed password for invalid user hadoop from 2.139.215.255 port 53721 ssh2
...
2019-10-03 16:49:41
115.238.236.74 attack
Oct  3 10:32:17 OPSO sshd\[27969\]: Invalid user norby from 115.238.236.74 port 38507
Oct  3 10:32:17 OPSO sshd\[27969\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=115.238.236.74
Oct  3 10:32:19 OPSO sshd\[27969\]: Failed password for invalid user norby from 115.238.236.74 port 38507 ssh2
Oct  3 10:36:43 OPSO sshd\[29068\]: Invalid user spy from 115.238.236.74 port 19095
Oct  3 10:36:43 OPSO sshd\[29068\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=115.238.236.74
2019-10-03 16:58:52

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