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 <<>> 104.21.51.12
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 18321
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.51.12.			IN	A

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

;; Query time: 81 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:35:03 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 12.51.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 12.51.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
27.73.123.137 attackspam
1580878373 - 02/05/2020 05:52:53 Host: 27.73.123.137/27.73.123.137 Port: 445 TCP Blocked
2020-02-05 14:56:41
52.212.228.152 attackbotsspam
Unauthorized connection attempt detected from IP address 52.212.228.152 to port 2220 [J]
2020-02-05 15:02:19
103.245.181.2 attackbotsspam
Unauthorized connection attempt detected from IP address 103.245.181.2 to port 2220 [J]
2020-02-05 15:18:52
218.4.164.86 attack
Feb  4 20:21:56 hpm sshd\[27704\]: Invalid user europe from 218.4.164.86
Feb  4 20:21:56 hpm sshd\[27704\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=218.4.164.86
Feb  4 20:21:58 hpm sshd\[27704\]: Failed password for invalid user europe from 218.4.164.86 port 65152 ssh2
Feb  4 20:25:57 hpm sshd\[28127\]: Invalid user kai from 218.4.164.86
Feb  4 20:25:57 hpm sshd\[28127\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=218.4.164.86
2020-02-05 15:17:28
46.0.203.166 attack
$f2bV_matches
2020-02-05 14:39:05
51.159.59.241 attackspambots
ET CINS Active Threat Intelligence Poor Reputation IP group 44 - port: 41794 proto: UDP cat: Misc Attack
2020-02-05 15:03:33
124.156.62.15 attack
" "
2020-02-05 15:08:35
94.179.177.229 attack
Unauthorized connection attempt detected from IP address 94.179.177.229 to port 23 [J]
2020-02-05 14:59:13
152.136.101.83 attack
Feb  5 05:43:20 ks10 sshd[2527697]: Failed password for root from 152.136.101.83 port 35200 ssh2
...
2020-02-05 15:13:21
78.31.71.108 attackspam
RDP Brute-Force (honeypot 13)
2020-02-05 14:45:03
164.132.102.168 attackspam
Feb  5 05:52:42 lnxmysql61 sshd[12292]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=164.132.102.168
2020-02-05 15:04:00
58.219.246.201 attackspambots
Unauthorised access (Feb  5) SRC=58.219.246.201 LEN=40 TTL=53 ID=1968 TCP DPT=8080 WINDOW=4136 SYN
2020-02-05 14:42:20
106.13.187.30 attackbots
Feb  5 07:01:57 legacy sshd[21565]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.13.187.30
Feb  5 07:01:59 legacy sshd[21565]: Failed password for invalid user jiangyan from 106.13.187.30 port 48850 ssh2
Feb  5 07:05:24 legacy sshd[21685]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.13.187.30
...
2020-02-05 15:07:05
118.98.43.121 attack
Feb  4 23:45:06 debian sshd[4593]: Unable to negotiate with 118.98.43.121 port 57353: no matching key exchange method found. Their offer: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1 [preauth]
Feb  5 00:38:18 debian sshd[7331]: Unable to negotiate with 118.98.43.121 port 57353: no matching key exchange method found. Their offer: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1 [preauth]
...
2020-02-05 15:08:56
96.46.213.134 attackbots
Feb  5 07:16:22 legacy sshd[22278]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=96.46.213.134
Feb  5 07:16:23 legacy sshd[22278]: Failed password for invalid user neptun from 96.46.213.134 port 34681 ssh2
Feb  5 07:19:15 legacy sshd[22394]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=96.46.213.134
...
2020-02-05 14:44:36

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