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:
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Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 104.21.21.166
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 50250
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.21.166.			IN	A

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

;; Query time: 55 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 08:33:08 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 166.21.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 166.21.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
213.205.240.117 attack
Chat Spam
2020-05-02 15:13:14
59.152.237.118 attackbotsspam
Invalid user redbot from 59.152.237.118 port 42334
2020-05-02 15:27:15
106.12.162.201 attack
sshd jail - ssh hack attempt
2020-05-02 15:42:37
150.136.111.169 attackbots
Fail2Ban Ban Triggered
HTTP Exploit Attempt
2020-05-02 15:19:36
104.18.36.89 attackbots
PORN SPAM !
2020-05-02 15:38:40
222.186.30.57 attack
May  2 09:20:32 minden010 sshd[18125]: Failed password for root from 222.186.30.57 port 53532 ssh2
May  2 09:20:36 minden010 sshd[18125]: Failed password for root from 222.186.30.57 port 53532 ssh2
May  2 09:20:38 minden010 sshd[18125]: Failed password for root from 222.186.30.57 port 53532 ssh2
...
2020-05-02 15:21:18
34.67.20.146 attackspam
Wordpress malicious attack:[octaxmlrpc]
2020-05-02 15:11:55
103.93.106.42 attack
Port probing on unauthorized port 23
2020-05-02 14:57:37
192.99.200.69 attackspambots
192.99.200.69 - - [02/May/2020:05:54:44 +0200] "GET /wp-login.php HTTP/1.1" 200 5702 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
192.99.200.69 - - [02/May/2020:05:54:45 +0200] "POST /wp-login.php HTTP/1.1" 200 5953 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
192.99.200.69 - - [02/May/2020:05:54:46 +0200] "POST /xmlrpc.php HTTP/1.1" 200 427 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
2020-05-02 15:02:13
156.96.46.20 attackbotsspam
May  1 22:54:52 mailman postfix/smtpd[1652]: warning: unknown[156.96.46.20]: SASL LOGIN authentication failed: authentication failure
2020-05-02 14:58:40
61.133.232.252 attack
May  2 08:02:06 host5 sshd[14916]: Invalid user paul from 61.133.232.252 port 56756
...
2020-05-02 14:56:17
185.143.74.136 attackbots
May  2 13:06:52 bacztwo courieresmtpd[19887]: error,relay=::ffff:185.143.74.136,msg="535 Authentication failed.",cmd: AUTH LOGIN s802@idv.tw
May  2 13:08:53 bacztwo courieresmtpd[31889]: error,relay=::ffff:185.143.74.136,msg="535 Authentication failed.",cmd: AUTH LOGIN www-org@idv.tw
May  2 13:10:52 bacztwo courieresmtpd[4687]: error,relay=::ffff:185.143.74.136,msg="535 Authentication failed.",cmd: AUTH LOGIN libraries@idv.tw
May  2 13:12:54 bacztwo courieresmtpd[14689]: error,relay=::ffff:185.143.74.136,msg="535 Authentication failed.",cmd: AUTH LOGIN invite@idv.tw
May  2 13:14:54 bacztwo courieresmtpd[23089]: error,relay=::ffff:185.143.74.136,msg="535 Authentication failed.",cmd: AUTH LOGIN md-3@idv.tw
...
2020-05-02 15:10:18
195.54.167.12 attackspambots
May  2 08:22:32 debian-2gb-nbg1-2 kernel: \[10659461.941734\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=195.54.167.12 DST=195.201.40.59 LEN=40 TOS=0x00 PREC=0x00 TTL=246 ID=11978 PROTO=TCP SPT=51477 DPT=5168 WINDOW=1024 RES=0x00 SYN URGP=0
2020-05-02 15:02:43
23.94.36.220 attackbotsspam
SSH/22 MH Probe, BF, Hack -
2020-05-02 15:40:46
142.93.56.12 attack
May  2 08:16:52 dev0-dcde-rnet sshd[958]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=142.93.56.12
May  2 08:16:54 dev0-dcde-rnet sshd[958]: Failed password for invalid user vitaly from 142.93.56.12 port 55818 ssh2
May  2 08:22:41 dev0-dcde-rnet sshd[974]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=142.93.56.12
2020-05-02 15:06:40

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