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 <<>> 104.21.5.81
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 19525
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.5.81.			IN	A

;; AUTHORITY SECTION:
.			112	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: Thu Feb 17 23:28:12 CST 2022
;; MSG SIZE  rcvd: 104
Host info
Host 81.5.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 81.5.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
163.172.45.154 attackspam
163.172.45.154 - - [26/Sep/2019:01:51:25 +0400] "POST /GponForm/diag_Form?style/ HTTP/1.1" 404 8805 "-" "curl/7.3.2"
...
2019-09-26 06:31:44
194.44.67.82 attackbotsspam
Chat Spam
2019-09-26 06:42:13
187.167.193.230 attackbotsspam
MultiHost/MultiPort Probe, Scan, Hack -
2019-09-26 06:51:48
185.234.218.156 attackbotsspam
2019-09-25 13:50:09 server smtpd[89558]: warning: unknown[185.234.218.156]:57565: SASL LOGIN authentication failed: Invalid authentication mechanism
2019-09-26 06:46:56
207.55.255.20 attackspam
Looking for resource vulnerabilities
2019-09-26 06:48:16
156.196.75.4 attackspambots
Chat Spam
2019-09-26 06:19:27
51.158.109.248 attackspambots
[Wed Sep 25 18:57:22 2019 GMT] RussianBeautyOnline  [URIBL_INV,RDNS_NONE], Subject: xxxx: You have (1) private unread messge
2019-09-26 06:24:37
51.91.212.79 attackbotsspam
" "
2019-09-26 06:17:06
222.186.180.19 attackspambots
Sep 26 00:21:55 [host] sshd[11024]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.180.19  user=root
Sep 26 00:21:58 [host] sshd[11024]: Failed password for root from 222.186.180.19 port 21456 ssh2
Sep 26 00:22:22 [host] sshd[11026]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.180.19  user=root
2019-09-26 06:45:58
118.24.3.193 attackspambots
Sep 25 23:57:02 vmanager6029 sshd\[5401\]: Invalid user user from 118.24.3.193 port 34340
Sep 25 23:57:02 vmanager6029 sshd\[5401\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=118.24.3.193
Sep 25 23:57:04 vmanager6029 sshd\[5401\]: Failed password for invalid user user from 118.24.3.193 port 34340 ssh2
2019-09-26 06:47:24
196.46.247.50 attackspam
MultiHost/MultiPort Probe, Scan, Hack -
2019-09-26 06:49:43
195.178.222.29 attackbots
Sep 25 23:17:40 piServer sshd[16041]: Failed password for daemon from 195.178.222.29 port 55960 ssh2
Sep 25 23:17:42 piServer sshd[16044]: Failed password for root from 195.178.222.29 port 56332 ssh2
...
2019-09-26 06:35:34
183.88.58.248 attack
Chat Spam
2019-09-26 06:45:21
77.103.0.227 attackspambots
Sep 25 22:52:10 dev0-dcde-rnet sshd[10590]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=77.103.0.227
Sep 25 22:52:12 dev0-dcde-rnet sshd[10590]: Failed password for invalid user admin from 77.103.0.227 port 45382 ssh2
Sep 25 22:56:23 dev0-dcde-rnet sshd[10598]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=77.103.0.227
2019-09-26 06:36:18
222.186.173.183 attackspambots
Sep 25 18:32:21 ny01 sshd[26375]: Failed password for root from 222.186.173.183 port 28790 ssh2
Sep 25 18:32:38 ny01 sshd[26375]: error: maximum authentication attempts exceeded for root from 222.186.173.183 port 28790 ssh2 [preauth]
Sep 25 18:32:49 ny01 sshd[26443]: Failed password for root from 222.186.173.183 port 50110 ssh2
2019-09-26 06:33:42

Recently Reported IPs

104.21.5.80 104.21.5.82 104.21.5.83 104.21.5.87
104.21.5.89 109.116.252.105 104.21.5.91 104.21.5.95
104.21.5.96 161.21.121.94 104.21.5.98 104.21.5.99
104.21.50.103 104.21.50.111 104.21.50.112 104.21.50.113
104.21.50.115 104.21.50.116 104.21.50.120 104.21.50.121