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:
b
Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 104.21.81.208
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 59998
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.81.208.			IN	A

;; AUTHORITY SECTION:
.			202	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022021702 1800 900 604800 86400

;; Query time: 48 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 10:20:26 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 208.81.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 208.81.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
176.9.228.105 attack
Mar 11 00:38:46 ovpn sshd[623]: Invalid user phil from 176.9.228.105
Mar 11 00:38:46 ovpn sshd[623]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=176.9.228.105
Mar 11 00:38:48 ovpn sshd[623]: Failed password for invalid user phil from 176.9.228.105 port 44360 ssh2
Mar 11 00:38:48 ovpn sshd[623]: Received disconnect from 176.9.228.105 port 44360:11: Bye Bye [preauth]
Mar 11 00:38:48 ovpn sshd[623]: Disconnected from 176.9.228.105 port 44360 [preauth]
Mar 11 00:51:28 ovpn sshd[3861]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=176.9.228.105  user=r.r
Mar 11 00:51:29 ovpn sshd[3861]: Failed password for r.r from 176.9.228.105 port 45358 ssh2
Mar 11 00:51:29 ovpn sshd[3861]: Received disconnect from 176.9.228.105 port 45358:11: Bye Bye [preauth]
Mar 11 00:51:29 ovpn sshd[3861]: Disconnected from 176.9.228.105 port 45358 [preauth]

........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=
2020-03-11 22:32:08
171.103.141.50 attackspam
(imapd) Failed IMAP login from 171.103.141.50 (TH/Thailand/171-103-141-50.static.asianet.co.th): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_TRIGGER; Logs: Mar 11 14:13:48 ir1 dovecot[4133960]: imap-login: Disconnected (auth failed, 1 attempts in 6 secs): user=, method=PLAIN, rip=171.103.141.50, lip=5.63.12.44, session=
2020-03-11 22:27:02
89.154.4.249 attackspam
Mar 11 14:37:21 pornomens sshd\[11950\]: Invalid user user from 89.154.4.249 port 45324
Mar 11 14:37:22 pornomens sshd\[11950\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=89.154.4.249
Mar 11 14:37:23 pornomens sshd\[11950\]: Failed password for invalid user user from 89.154.4.249 port 45324 ssh2
...
2020-03-11 22:15:19
5.160.213.3 attackspambots
Automatic report - Port Scan Attack
2020-03-11 22:03:47
222.186.52.139 attack
pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.52.139  user=root
Failed password for root from 222.186.52.139 port 47719 ssh2
Failed password for root from 222.186.52.139 port 47719 ssh2
Failed password for root from 222.186.52.139 port 47719 ssh2
pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.52.139  user=root
2020-03-11 22:26:47
45.55.219.114 attackspambots
fail2ban
2020-03-11 22:27:50
124.89.171.141 attack
SSH login attempts.
2020-03-11 21:56:09
116.98.162.3 attackbots
Mar 11 11:20:44 b-admin sshd[18261]: Did not receive identification string from 116.98.162.3 port 49566
Mar 11 11:20:51 b-admin sshd[18263]: Invalid user admina from 116.98.162.3 port 52727
Mar 11 11:20:51 b-admin sshd[18263]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=116.98.162.3
Mar 11 11:20:53 b-admin sshd[18263]: Failed password for invalid user admina from 116.98.162.3 port 52727 ssh2
Mar 11 11:20:53 b-admin sshd[18263]: Connection closed by 116.98.162.3 port 52727 [preauth]


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=116.98.162.3
2020-03-11 21:59:32
91.215.224.97 attackspambots
Honeypot attack, port: 445, PTR: PTR record not found
2020-03-11 22:23:02
198.245.49.37 attack
Mar 11 19:40:44 webhost01 sshd[19818]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=198.245.49.37
Mar 11 19:40:46 webhost01 sshd[19818]: Failed password for invalid user kuaisuweb from 198.245.49.37 port 54802 ssh2
...
2020-03-11 22:22:29
113.200.60.74 attack
SSH login attempts.
2020-03-11 22:00:17
82.77.161.166 attackbots
SSH login attempts.
2020-03-11 22:36:25
58.17.243.151 attackspambots
SSH login attempts.
2020-03-11 22:01:48
93.170.36.5 attackspambots
2020-03-11T10:13:46.462808ts3.arvenenaske.de sshd[31657]: Invalid user ts3bot from 93.170.36.5 port 49950
2020-03-11T10:13:46.473092ts3.arvenenaske.de sshd[31657]: pam_sss(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=93.170.36.5 user=ts3bot
2020-03-11T10:13:46.474261ts3.arvenenaske.de sshd[31657]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=93.170.36.5
2020-03-11T10:13:46.462808ts3.arvenenaske.de sshd[31657]: Invalid user ts3bot from 93.170.36.5 port 49950
2020-03-11T10:13:48.413138ts3.arvenenaske.de sshd[31657]: Failed password for invalid user ts3bot from 93.170.36.5 port 49950 ssh2
2020-03-11T10:18:36.166742ts3.arvenenaske.de sshd[31663]: Invalid user test_dw from 93.170.36.5 port 38430
2020-03-11T10:18:36.174337ts3.arvenenaske.de sshd[31663]: pam_sss(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=93.170.36.5 user=test_dw
2020-03-11T10:18:36.175536ts3.arvenena........
------------------------------
2020-03-11 22:28:43
163.172.122.165 attack
web-1 [ssh] SSH Attack
2020-03-11 22:06:37

Recently Reported IPs

104.21.81.190 104.21.81.19 104.21.81.216 104.21.81.221
104.21.81.210 104.21.81.200 13.225.71.89 104.21.81.215
104.21.81.218 104.21.81.237 104.21.81.27 104.21.81.231
104.21.81.26 104.21.81.3 104.21.81.34 104.21.81.31
104.21.81.252 104.21.81.36 104.21.81.42 104.21.81.51