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 <<>> 104.21.51.57
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 48749
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.51.57.			IN	A

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

;; Query time: 78 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:35:28 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 57.51.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 57.51.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
82.64.80.109 attackbots
Caught in portsentry honeypot
2019-09-04 01:30:56
178.62.217.187 attackbotsspam
178.62.217.187 - - [03/Sep/2019:17:35:40 +0200] "GET /wp-login.php HTTP/1.1" 200 1301 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
178.62.217.187 - - [03/Sep/2019:17:35:41 +0200] "POST /wp-login.php HTTP/1.1" 200 1704 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
178.62.217.187 - - [03/Sep/2019:17:35:41 +0200] "GET /wp-login.php HTTP/1.1" 200 1301 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
178.62.217.187 - - [03/Sep/2019:17:35:42 +0200] "POST /wp-login.php HTTP/1.1" 200 1684 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
178.62.217.187 - - [03/Sep/2019:17:35:43 +0200] "GET /wp-login.php HTTP/1.1" 200 1301 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
178.62.217.187 - - [03/Sep/2019:17:35:45 +0200] "POST /wp-login.php HTTP/1.1" 200 1688 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
...
2019-09-04 01:58:26
114.143.49.66 attackbotsspam
Unauthorized connection attempt from IP address 114.143.49.66 on Port 445(SMB)
2019-09-04 01:14:52
112.85.42.180 attack
port scan and connect, tcp 22 (ssh)
2019-09-04 01:55:02
125.21.176.29 attackspam
Unauthorized connection attempt from IP address 125.21.176.29 on Port 445(SMB)
2019-09-04 01:32:38
183.48.34.77 attackbotsspam
Sep  3 10:02:41 cp sshd[9744]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=183.48.34.77
2019-09-04 01:51:01
103.89.90.196 attack
Sep  3 18:18:10 xeon postfix/smtpd[48879]: warning: unknown[103.89.90.196]: SASL LOGIN authentication failed: authentication failure
2019-09-04 02:07:46
49.207.180.197 attackspam
Sep  3 08:12:45 vps200512 sshd\[24903\]: Invalid user sqoop from 49.207.180.197
Sep  3 08:12:45 vps200512 sshd\[24903\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.207.180.197
Sep  3 08:12:46 vps200512 sshd\[24903\]: Failed password for invalid user sqoop from 49.207.180.197 port 38013 ssh2
Sep  3 08:17:19 vps200512 sshd\[24981\]: Invalid user silva from 49.207.180.197
Sep  3 08:17:19 vps200512 sshd\[24981\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.207.180.197
2019-09-04 01:33:44
158.69.110.31 attack
Sep  3 10:45:24 herz-der-gamer sshd[23923]: Invalid user iesse from 158.69.110.31 port 55752
Sep  3 10:45:24 herz-der-gamer sshd[23923]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=158.69.110.31
Sep  3 10:45:24 herz-der-gamer sshd[23923]: Invalid user iesse from 158.69.110.31 port 55752
Sep  3 10:45:26 herz-der-gamer sshd[23923]: Failed password for invalid user iesse from 158.69.110.31 port 55752 ssh2
...
2019-09-04 01:16:26
46.229.168.142 attackspambots
Automatic report - Banned IP Access
2019-09-04 02:11:25
186.250.116.58 attackspambots
Unauthorized connection attempt from IP address 186.250.116.58 on Port 445(SMB)
2019-09-04 01:49:37
51.79.20.92 attackspam
Calling not existent HTTP content (400 or 404).
2019-09-04 01:18:59
115.75.38.12 attack
Unauthorized connection attempt from IP address 115.75.38.12 on Port 445(SMB)
2019-09-04 01:48:31
173.249.35.214 attackspam
Repeated brute force against a port
2019-09-04 01:58:56
159.203.74.227 attackspambots
Automatic report
2019-09-04 02:07:14

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