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 <<>> 104.21.16.81
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 47074
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.16.81.			IN	A

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

;; Query time: 19 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:12:48 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 81.16.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 81.16.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
222.253.33.90 attackspam
Honeypot attack, port: 445, PTR: static.vnpt.vn.
2020-01-27 20:44:39
51.83.74.126 attack
Unauthorized connection attempt detected from IP address 51.83.74.126 to port 2220 [J]
2020-01-27 20:56:09
104.248.150.69 attackspambots
Jan 27 13:52:30 MK-Soft-Root2 sshd[12344]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=104.248.150.69 
Jan 27 13:52:32 MK-Soft-Root2 sshd[12344]: Failed password for invalid user tylor from 104.248.150.69 port 48398 ssh2
...
2020-01-27 20:55:25
91.65.236.149 attackspambots
Jan 27 10:54:52 mout sshd[16835]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=91.65.236.149  user=pi
Jan 27 10:54:54 mout sshd[16835]: Failed password for pi from 91.65.236.149 port 58752 ssh2
Jan 27 10:54:55 mout sshd[16835]: Connection closed by 91.65.236.149 port 58752 [preauth]
2020-01-27 20:45:12
79.52.244.61 attackbots
Honeypot attack, port: 81, PTR: host61-244-dynamic.52-79-r.retail.telecomitalia.it.
2020-01-27 20:33:48
179.124.34.8 attack
Unauthorized connection attempt detected from IP address 179.124.34.8 to port 2220 [J]
2020-01-27 20:48:26
106.13.75.115 attack
SSH/22 MH Probe, BF, Hack -
2020-01-27 20:21:29
68.183.146.178 attack
Unauthorized connection attempt detected from IP address 68.183.146.178 to port 2220 [J]
2020-01-27 20:45:25
142.93.56.12 attackbots
Unauthorized connection attempt detected from IP address 142.93.56.12 to port 2220 [J]
2020-01-27 20:22:44
222.186.15.10 attackbotsspam
Unauthorized connection attempt detected from IP address 222.186.15.10 to port 22 [T]
2020-01-27 20:28:34
46.38.144.57 attackspam
Jan 27 12:45:29 blackbee postfix/smtpd\[16732\]: warning: unknown\[46.38.144.57\]: SASL LOGIN authentication failed: authentication failure
Jan 27 12:46:16 blackbee postfix/smtpd\[16734\]: warning: unknown\[46.38.144.57\]: SASL LOGIN authentication failed: authentication failure
Jan 27 12:47:02 blackbee postfix/smtpd\[16732\]: warning: unknown\[46.38.144.57\]: SASL LOGIN authentication failed: authentication failure
Jan 27 12:47:49 blackbee postfix/smtpd\[16734\]: warning: unknown\[46.38.144.57\]: SASL LOGIN authentication failed: authentication failure
Jan 27 12:48:36 blackbee postfix/smtpd\[16734\]: warning: unknown\[46.38.144.57\]: SASL LOGIN authentication failed: authentication failure
...
2020-01-27 20:50:36
196.221.70.151 attackbots
Jan 27 11:44:12 thevastnessof sshd[21877]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=196.221.70.151
...
2020-01-27 20:19:13
68.183.133.156 attackspam
Jan 27 00:51:28 server sshd\[3229\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=68.183.133.156 
Jan 27 00:51:30 server sshd\[3229\]: Failed password for invalid user prestashop from 68.183.133.156 port 43166 ssh2
Jan 27 12:54:53 server sshd\[16249\]: Invalid user german from 68.183.133.156
Jan 27 12:54:53 server sshd\[16249\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=68.183.133.156 
Jan 27 12:54:56 server sshd\[16249\]: Failed password for invalid user german from 68.183.133.156 port 54648 ssh2
...
2020-01-27 20:45:55
222.186.30.187 attack
27.01.2020 12:08:48 SSH access blocked by firewall
2020-01-27 20:13:49
80.211.116.102 attack
2020-01-27T09:48:03.570826abusebot-8.cloudsearch.cf sshd[28878]: Invalid user dir1 from 80.211.116.102 port 39720
2020-01-27T09:48:03.584036abusebot-8.cloudsearch.cf sshd[28878]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=80.211.116.102
2020-01-27T09:48:03.570826abusebot-8.cloudsearch.cf sshd[28878]: Invalid user dir1 from 80.211.116.102 port 39720
2020-01-27T09:48:06.230858abusebot-8.cloudsearch.cf sshd[28878]: Failed password for invalid user dir1 from 80.211.116.102 port 39720 ssh2
2020-01-27T09:54:45.654706abusebot-8.cloudsearch.cf sshd[29764]: Invalid user eli from 80.211.116.102 port 35521
2020-01-27T09:54:45.662372abusebot-8.cloudsearch.cf sshd[29764]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=80.211.116.102
2020-01-27T09:54:45.654706abusebot-8.cloudsearch.cf sshd[29764]: Invalid user eli from 80.211.116.102 port 35521
2020-01-27T09:54:47.496610abusebot-8.cloudsearch.cf sshd[29764]: Failed
...
2020-01-27 20:52:35

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