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 <<>> 104.21.66.100
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 34106
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.66.100.			IN	A

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

;; Query time: 24 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:44:42 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 100.66.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 100.66.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
211.252.87.97 attackbots
2020-06-21T15:07:46.452506vps751288.ovh.net sshd\[6509\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=211.252.87.97  user=root
2020-06-21T15:07:48.575703vps751288.ovh.net sshd\[6509\]: Failed password for root from 211.252.87.97 port 43768 ssh2
2020-06-21T15:11:39.309395vps751288.ovh.net sshd\[6549\]: Invalid user tcp from 211.252.87.97 port 37822
2020-06-21T15:11:39.321718vps751288.ovh.net sshd\[6549\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=211.252.87.97
2020-06-21T15:11:42.097318vps751288.ovh.net sshd\[6549\]: Failed password for invalid user tcp from 211.252.87.97 port 37822 ssh2
2020-06-21 21:36:11
132.232.68.172 attackbotsspam
MYH,DEF GET /wp-login.php
2020-06-21 21:44:47
99.185.76.161 attackspambots
Jun 21 13:17:44 ip-172-31-61-156 sshd[24114]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=99.185.76.161
Jun 21 13:17:44 ip-172-31-61-156 sshd[24114]: Invalid user tomcat7 from 99.185.76.161
Jun 21 13:17:47 ip-172-31-61-156 sshd[24114]: Failed password for invalid user tomcat7 from 99.185.76.161 port 44514 ssh2
Jun 21 13:20:28 ip-172-31-61-156 sshd[24223]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=99.185.76.161  user=root
Jun 21 13:20:30 ip-172-31-61-156 sshd[24223]: Failed password for root from 99.185.76.161 port 36046 ssh2
...
2020-06-21 21:24:59
193.169.252.21 attackspam
 UDP 193.169.252.21:56284 -> port 3702, len 57
2020-06-21 21:48:50
77.82.83.212 attack
Honeypot attack, port: 445, PTR: static77-82-83-212.kamchatka.ru.
2020-06-21 21:47:30
118.27.5.46 attackspam
Jun 21 14:26:45 gestao sshd[23124]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=118.27.5.46 
Jun 21 14:26:47 gestao sshd[23124]: Failed password for invalid user steam from 118.27.5.46 port 56346 ssh2
Jun 21 14:29:35 gestao sshd[23173]: Failed password for root from 118.27.5.46 port 39524 ssh2
...
2020-06-21 21:29:46
103.120.221.65 attackbots
bruteforce detected
2020-06-21 21:53:35
200.166.184.190 attackbots
Jun 21 15:17:15 eventyay sshd[16318]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=200.166.184.190
Jun 21 15:17:17 eventyay sshd[16318]: Failed password for invalid user itsupport from 200.166.184.190 port 40498 ssh2
Jun 21 15:20:31 eventyay sshd[16413]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=200.166.184.190
...
2020-06-21 21:32:55
212.70.149.2 attackspam
Jun 21 15:36:38 srv01 postfix/smtpd\[356\]: warning: unknown\[212.70.149.2\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jun 21 15:36:53 srv01 postfix/smtpd\[27989\]: warning: unknown\[212.70.149.2\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jun 21 15:36:57 srv01 postfix/smtpd\[356\]: warning: unknown\[212.70.149.2\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jun 21 15:37:17 srv01 postfix/smtpd\[356\]: warning: unknown\[212.70.149.2\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jun 21 15:37:31 srv01 postfix/smtpd\[27989\]: warning: unknown\[212.70.149.2\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...
2020-06-21 21:39:54
164.132.57.16 attack
Jun 21 15:17:08 h1745522 sshd[13409]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=164.132.57.16  user=root
Jun 21 15:17:10 h1745522 sshd[13409]: Failed password for root from 164.132.57.16 port 45917 ssh2
Jun 21 15:20:19 h1745522 sshd[13522]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=164.132.57.16  user=root
Jun 21 15:20:21 h1745522 sshd[13522]: Failed password for root from 164.132.57.16 port 45035 ssh2
Jun 21 15:23:29 h1745522 sshd[13597]: Invalid user guest from 164.132.57.16 port 44160
Jun 21 15:23:29 h1745522 sshd[13597]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=164.132.57.16
Jun 21 15:23:29 h1745522 sshd[13597]: Invalid user guest from 164.132.57.16 port 44160
Jun 21 15:23:31 h1745522 sshd[13597]: Failed password for invalid user guest from 164.132.57.16 port 44160 ssh2
Jun 21 15:26:47 h1745522 sshd[13725]: Invalid user john from 164.132.57.16 p
...
2020-06-21 21:55:06
102.68.130.109 attackspambots
Unauthorized connection attempt from IP address 102.68.130.109 on Port 445(SMB)
2020-06-21 22:04:34
41.251.253.227 attackbotsspam
Unauthorized connection attempt from IP address 41.251.253.227 on Port 445(SMB)
2020-06-21 21:24:21
223.70.214.103 attack
Jun 21 12:16:05 *** sshd[9859]: Invalid user g from 223.70.214.103
2020-06-21 21:35:49
66.181.161.53 attackbots
Unauthorized connection attempt from IP address 66.181.161.53 on Port 445(SMB)
2020-06-21 21:48:00
158.69.222.2 attack
SSH invalid-user multiple login try
2020-06-21 21:21:53

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