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 <<>> 104.21.72.81
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 40784
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.72.81.			IN	A

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

;; Query time: 17 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:51:27 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 81.72.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 81.72.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
46.101.143.148 attack
Sep 14 18:39:59 serwer sshd\[18015\]: Invalid user abcdefg from 46.101.143.148 port 59714
Sep 14 18:39:59 serwer sshd\[18015\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=46.101.143.148
Sep 14 18:40:01 serwer sshd\[18015\]: Failed password for invalid user abcdefg from 46.101.143.148 port 59714 ssh2
...
2020-09-15 03:04:28
125.118.72.56 attackspambots
2020-09-14T08:59:51.875591hostname sshd[62439]: Failed password for root from 125.118.72.56 port 57078 ssh2
...
2020-09-15 03:12:27
223.156.186.1 attackspambots
Automatic report - Port Scan Attack
2020-09-15 03:20:39
93.61.137.226 attack
Sep 14 16:50:28 IngegnereFirenze sshd[11341]: Failed password for invalid user tomcat from 93.61.137.226 port 40511 ssh2
...
2020-09-15 03:12:10
160.153.251.217 attack
160.153.251.217 - - [14/Sep/2020:19:03:27 +0200] "POST /xmlrpc.php HTTP/1.1" 403 15714 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
160.153.251.217 - - [14/Sep/2020:19:27:45 +0200] "POST /xmlrpc.php HTTP/1.1" 403 461 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
...
2020-09-15 03:01:06
5.188.206.30 attackbots
5.188.206.30:63067 - - [13/Sep/2020:18:44:02 +0200] "\x03" 400 311
2020-09-15 03:36:36
51.89.68.141 attack
Sep 14 22:52:34 dhoomketu sshd[3093187]: Failed password for invalid user devops from 51.89.68.141 port 46594 ssh2
Sep 14 22:56:33 dhoomketu sshd[3093336]: Invalid user sistemas from 51.89.68.141 port 59582
Sep 14 22:56:33 dhoomketu sshd[3093336]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.89.68.141 
Sep 14 22:56:33 dhoomketu sshd[3093336]: Invalid user sistemas from 51.89.68.141 port 59582
Sep 14 22:56:36 dhoomketu sshd[3093336]: Failed password for invalid user sistemas from 51.89.68.141 port 59582 ssh2
...
2020-09-15 03:24:35
81.28.174.138 attackbotsspam
Automatic report - Port Scan Attack
2020-09-15 03:05:48
200.52.221.18 attackbotsspam
Automatic report - Banned IP Access
2020-09-15 03:13:28
110.22.104.19 attack
Icarus honeypot on github
2020-09-15 03:31:54
213.184.252.110 attack
SSH Bruteforce attack
2020-09-15 03:25:20
180.166.208.56 attack
(smtpauth) Failed SMTP AUTH login from 180.166.208.56 (CN/China/-): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_TRIGGER; Logs: 2020-09-14 19:54:59 login authenticator failed for (mail.tookatarh.com) [180.166.208.56]: 535 Incorrect authentication data (set_id=nologin)
2020-09-15 03:35:36
178.128.95.43 attackspambots
Sep 14 13:55:20 ws19vmsma01 sshd[147760]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=178.128.95.43
Sep 14 13:55:22 ws19vmsma01 sshd[147760]: Failed password for invalid user smbtesting from 178.128.95.43 port 61988 ssh2
...
2020-09-15 03:17:55
104.198.100.105 attackbotsspam
$f2bV_matches
2020-09-15 02:59:05
185.250.205.84 attackbotsspam
firewall-block, port(s): 24906/tcp, 32983/tcp, 50787/tcp
2020-09-15 03:31:12

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