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:
b
Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 104.21.81.13
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 47070
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.81.13.			IN	A

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

;; Query time: 66 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 03:02:04 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 13.81.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 13.81.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
68.183.53.170 attackspambots
Invalid user ems from 68.183.53.170 port 44912
2020-10-01 22:44:54
37.98.196.42 attack
Oct  1 12:26:59 scw-6657dc sshd[29500]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=37.98.196.42
Oct  1 12:26:59 scw-6657dc sshd[29500]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=37.98.196.42
Oct  1 12:27:01 scw-6657dc sshd[29500]: Failed password for invalid user joshua from 37.98.196.42 port 44434 ssh2
...
2020-10-01 22:47:49
42.48.194.164 attack
Found on   CINS badguys     / proto=6  .  srcport=39275  .  dstport=2222  .     (1829)
2020-10-01 22:12:58
202.77.100.43 attackspambots
1601498378 - 09/30/2020 22:39:38 Host: 202.77.100.43/202.77.100.43 Port: 445 TCP Blocked
2020-10-01 22:35:12
101.206.162.247 attack
prod6
...
2020-10-01 22:12:03
62.234.137.128 attackspambots
$f2bV_matches
2020-10-01 22:14:08
196.1.97.206 attackspam
SSH/22 MH Probe, BF, Hack -
2020-10-01 22:48:13
81.192.8.14 attackbotsspam
Oct  1 09:22:42 mail sshd\[33123\]: Invalid user administrator from 81.192.8.14
Oct  1 09:22:42 mail sshd\[33123\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=81.192.8.14
...
2020-10-01 22:16:01
54.37.154.113 attackspam
Oct  1 14:07:53 vps-51d81928 sshd[498475]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=54.37.154.113 
Oct  1 14:07:53 vps-51d81928 sshd[498475]: Invalid user anonymous from 54.37.154.113 port 38734
Oct  1 14:07:56 vps-51d81928 sshd[498475]: Failed password for invalid user anonymous from 54.37.154.113 port 38734 ssh2
Oct  1 14:11:51 vps-51d81928 sshd[498519]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=54.37.154.113  user=root
Oct  1 14:11:53 vps-51d81928 sshd[498519]: Failed password for root from 54.37.154.113 port 47280 ssh2
...
2020-10-01 22:24:33
13.233.194.72 attackbots
xmlrpc attack
2020-10-01 22:29:15
5.196.72.11 attackspambots
$f2bV_matches
2020-10-01 22:52:12
51.75.205.10 attack
SSH Bruteforce attack
2020-10-01 22:16:26
45.179.165.207 attackspam
Sep 30 22:39:30 mellenthin postfix/smtpd[20705]: NOQUEUE: reject: RCPT from 207.165.179.45.in-addr.arpa[45.179.165.207]: 554 5.7.1 Service unavailable; Client host [45.179.165.207] blocked using zen.spamhaus.org; https://www.spamhaus.org/query/ip/45.179.165.207; from= to= proto=ESMTP helo=<245.165.179.45.in-addr.arpa>
2020-10-01 22:43:09
41.231.82.93 attackbots
F2B blocked SSH BF
2020-10-01 22:45:33
189.207.102.3 attackbots
Automatic report - Port Scan Attack
2020-10-01 22:17:19

Recently Reported IPs

104.21.81.128 104.21.81.129 104.21.81.132 104.21.81.137
104.21.81.133 104.21.81.138 104.21.81.143 104.21.81.14
104.21.81.148 104.21.81.149 104.21.81.147 104.21.81.152
104.21.81.15 104.21.81.146 104.21.81.150 104.21.81.151
104.21.81.153 104.21.81.154 104.21.81.155 104.21.81.156