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 <<>> 104.21.8.51
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 35169
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.8.51.			IN	A

;; AUTHORITY SECTION:
.			268	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022021701 1800 900 604800 86400

;; Query time: 16 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 03:00:25 CST 2022
;; MSG SIZE  rcvd: 104
Host info
Host 51.8.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 51.8.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
218.92.0.133 attack
"Unauthorized connection attempt on SSHD detected"
2020-07-17 14:05:59
218.92.0.219 attackspambots
Jul 16 23:17:38 dignus sshd[27048]: Failed password for root from 218.92.0.219 port 15574 ssh2
Jul 16 23:17:40 dignus sshd[27048]: Failed password for root from 218.92.0.219 port 15574 ssh2
Jul 16 23:17:44 dignus sshd[27174]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=218.92.0.219  user=root
Jul 16 23:17:45 dignus sshd[27174]: Failed password for root from 218.92.0.219 port 61652 ssh2
Jul 16 23:17:49 dignus sshd[27174]: Failed password for root from 218.92.0.219 port 61652 ssh2
...
2020-07-17 14:18:33
188.254.0.183 attackspambots
2020-07-17T00:47:58.0189441495-001 sshd[11559]: Invalid user jefe from 188.254.0.183 port 50196
2020-07-17T00:47:59.9086721495-001 sshd[11559]: Failed password for invalid user jefe from 188.254.0.183 port 50196 ssh2
2020-07-17T00:53:58.3414661495-001 sshd[11814]: Invalid user 123 from 188.254.0.183 port 34780
2020-07-17T00:53:58.3445221495-001 sshd[11814]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=188.254.0.183
2020-07-17T00:53:58.3414661495-001 sshd[11814]: Invalid user 123 from 188.254.0.183 port 34780
2020-07-17T00:54:00.3212721495-001 sshd[11814]: Failed password for invalid user 123 from 188.254.0.183 port 34780 ssh2
...
2020-07-17 14:33:53
61.177.172.142 attackspambots
Jul 17 07:48:22 home sshd[18043]: Failed password for root from 61.177.172.142 port 30149 ssh2
Jul 17 07:48:35 home sshd[18043]: error: maximum authentication attempts exceeded for root from 61.177.172.142 port 30149 ssh2 [preauth]
Jul 17 07:48:48 home sshd[18075]: Failed password for root from 61.177.172.142 port 9628 ssh2
...
2020-07-17 13:52:31
103.217.255.140 attackbots
malicious Brute-Force reported by https://www.patrick-binder.de
...
2020-07-17 14:26:51
222.186.175.150 attackspam
Jul 17 07:56:17 vps639187 sshd\[20712\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.175.150  user=root
Jul 17 07:56:19 vps639187 sshd\[20712\]: Failed password for root from 222.186.175.150 port 34786 ssh2
Jul 17 07:56:23 vps639187 sshd\[20712\]: Failed password for root from 222.186.175.150 port 34786 ssh2
...
2020-07-17 14:00:02
103.56.205.226 attackspambots
Jul 17 08:21:55 hosting sshd[3434]: Invalid user toor from 103.56.205.226 port 58378
...
2020-07-17 14:28:40
141.98.9.161 attack
Bruteforce detected by fail2ban
2020-07-17 14:29:35
218.92.0.248 attackspambots
Jul 17 08:03:43 piServer sshd[23531]: Failed password for root from 218.92.0.248 port 4067 ssh2
Jul 17 08:03:47 piServer sshd[23531]: Failed password for root from 218.92.0.248 port 4067 ssh2
Jul 17 08:03:53 piServer sshd[23531]: Failed password for root from 218.92.0.248 port 4067 ssh2
Jul 17 08:03:57 piServer sshd[23531]: Failed password for root from 218.92.0.248 port 4067 ssh2
...
2020-07-17 14:04:12
192.35.169.48 attack
Failed password for invalid user from 192.35.169.48 port 5292 ssh2
2020-07-17 14:07:24
222.186.180.130 attackbots
2020-07-17T05:28:01.539736abusebot-2.cloudsearch.cf sshd[18324]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.180.130  user=root
2020-07-17T05:28:02.984425abusebot-2.cloudsearch.cf sshd[18324]: Failed password for root from 222.186.180.130 port 48662 ssh2
2020-07-17T05:28:05.334282abusebot-2.cloudsearch.cf sshd[18324]: Failed password for root from 222.186.180.130 port 48662 ssh2
2020-07-17T05:28:01.539736abusebot-2.cloudsearch.cf sshd[18324]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.180.130  user=root
2020-07-17T05:28:02.984425abusebot-2.cloudsearch.cf sshd[18324]: Failed password for root from 222.186.180.130 port 48662 ssh2
2020-07-17T05:28:05.334282abusebot-2.cloudsearch.cf sshd[18324]: Failed password for root from 222.186.180.130 port 48662 ssh2
2020-07-17T05:28:01.539736abusebot-2.cloudsearch.cf sshd[18324]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 
...
2020-07-17 13:55:32
61.177.172.102 attackbotsspam
2020-07-17T08:20:19.013137vps751288.ovh.net sshd\[28792\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=61.177.172.102  user=root
2020-07-17T08:20:21.250403vps751288.ovh.net sshd\[28792\]: Failed password for root from 61.177.172.102 port 60461 ssh2
2020-07-17T08:20:24.040760vps751288.ovh.net sshd\[28792\]: Failed password for root from 61.177.172.102 port 60461 ssh2
2020-07-17T08:20:27.950435vps751288.ovh.net sshd\[28792\]: Failed password for root from 61.177.172.102 port 60461 ssh2
2020-07-17T08:20:38.173402vps751288.ovh.net sshd\[28796\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=61.177.172.102  user=root
2020-07-17 14:23:42
60.212.191.66 attackbotsspam
Jul 17 07:15:00 ns37 sshd[25840]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=60.212.191.66
2020-07-17 14:33:30
218.92.0.158 attack
Jul 17 07:43:46 vm0 sshd[7982]: Failed password for root from 218.92.0.158 port 36719 ssh2
Jul 17 07:44:02 vm0 sshd[7982]: error: maximum authentication attempts exceeded for root from 218.92.0.158 port 36719 ssh2 [preauth]
...
2020-07-17 14:05:28
134.122.86.98 attackspam
Failed password for invalid user from 134.122.86.98 port 60466 ssh2
2020-07-17 14:08:48

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