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 <<>> 104.21.16.66
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 14200
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.16.66.			IN	A

;; AUTHORITY SECTION:
.			600	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022021602 1800 900 604800 86400

;; Query time: 23 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Thu Feb 17 08:08:16 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 66.16.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 66.16.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
106.13.129.8 attack
Fail2Ban Ban Triggered (2)
2020-10-02 04:15:12
34.72.30.48 attack
uvcm 34.72.30.48 [28/Sep/2020:18:31:52 "-" "POST /wp-login.php 200 2273
34.72.30.48 [01/Oct/2020:06:46:38 "-" "GET /wp-login.php 200 1549
34.72.30.48 [01/Oct/2020:06:46:39 "-" "POST /wp-login.php 200 1935
2020-10-02 03:57:28
192.143.64.73 attackspam
Lines containing failures of 192.143.64.73
Sep 30 22:28:20 shared11 sshd[8297]: Did not receive identification string from 192.143.64.73 port 54782
Sep 30 22:28:24 shared11 sshd[8305]: Invalid user system from 192.143.64.73 port 55109
Sep 30 22:28:28 shared11 sshd[8305]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=192.143.64.73
Sep 30 22:28:30 shared11 sshd[8305]: Failed password for invalid user system from 192.143.64.73 port 55109 ssh2


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=192.143.64.73
2020-10-02 04:24:58
37.59.148.234 attackspambots
37.59.148.234 - - [01/Oct/2020:18:14:28 +0100] "POST /wp-login.php HTTP/1.1" 200 1933 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
37.59.148.234 - - [01/Oct/2020:18:14:28 +0100] "POST /xmlrpc.php HTTP/1.1" 403 219 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
37.59.148.234 - - [01/Oct/2020:18:31:00 +0100] "POST /xmlrpc.php HTTP/1.1" 403 219 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
...
2020-10-02 03:54:25
138.97.97.44 attackbots
Icarus honeypot on github
2020-10-02 03:58:45
94.102.49.137 attackbots
firewall-block, port(s): 10750/tcp, 10774/tcp, 10843/tcp, 10874/tcp, 10886/tcp
2020-10-02 04:28:40
180.76.242.204 attackbotsspam
Oct  1 19:58:37 ip-172-31-42-142 sshd\[1327\]: Invalid user servidor from 180.76.242.204\
Oct  1 19:58:39 ip-172-31-42-142 sshd\[1327\]: Failed password for invalid user servidor from 180.76.242.204 port 50320 ssh2\
Oct  1 20:02:56 ip-172-31-42-142 sshd\[1368\]: Invalid user stefano from 180.76.242.204\
Oct  1 20:02:59 ip-172-31-42-142 sshd\[1368\]: Failed password for invalid user stefano from 180.76.242.204 port 54006 ssh2\
Oct  1 20:07:09 ip-172-31-42-142 sshd\[1422\]: Failed password for root from 180.76.242.204 port 57692 ssh2\
2020-10-02 04:08:04
49.233.56.9 attackbotsspam
leo_www
2020-10-02 04:06:26
213.227.155.199 attack
Lines containing failures of 213.227.155.199
/var/log/apache/pucorp.org.log:Sep 30 22:25:46 server01 postfix/smtpd[16376]: connect from unknown[213.227.155.199]
/var/log/apache/pucorp.org.log:Sep x@x
/var/log/apache/pucorp.org.log:Sep x@x
/var/log/apache/pucorp.org.log:Sep 30 22:26:35 server01 postfix/policy-spf[16421]: : Policy action=550 Please see hxxp://www.openspf.org/Why?s=helo;id=shavogroup.com;ip=213.227.155.199;r=server01.2800km.de
/var/log/apache/pucorp.org.log:Sep x@x
/var/log/apache/pucorp.org.log:Sep 30 22:26:35 server01 postfix/smtpd[16376]: disconnect from unknown[213.227.155.199]


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=213.227.155.199
2020-10-02 04:02:34
102.32.99.63 attackspambots
WordPress wp-login brute force :: 102.32.99.63 0.060 BYPASS [30/Sep/2020:20:41:51  0000] [censored_2] "POST /wp-login.php HTTP/1.1" 200 2577 "https://[censored_2]/wp-login.php" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36"
2020-10-02 03:55:25
61.52.168.156 attackbots
TCP Port Scanning
2020-10-02 04:15:29
139.155.39.22 attack
Brute%20Force%20SSH
2020-10-02 04:23:21
35.195.238.142 attackspambots
2020-10-01T19:07:06.425665server.espacesoutien.com sshd[8776]: Invalid user tecmint from 35.195.238.142 port 44444
2020-10-01T19:07:06.437358server.espacesoutien.com sshd[8776]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=35.195.238.142
2020-10-01T19:07:06.425665server.espacesoutien.com sshd[8776]: Invalid user tecmint from 35.195.238.142 port 44444
2020-10-01T19:07:08.656535server.espacesoutien.com sshd[8776]: Failed password for invalid user tecmint from 35.195.238.142 port 44444 ssh2
...
2020-10-02 04:07:16
62.112.11.81 attack
Cowrie Honeypot: 10 unauthorised SSH/Telnet login attempts between 2020-10-01T14:50:31Z and 2020-10-01T15:16:01Z
2020-10-02 04:13:03
197.60.176.182 attack
23/tcp
[2020-09-30]1pkt
2020-10-02 04:05:23

Recently Reported IPs

104.21.16.48 219.97.72.80 104.21.16.9 104.21.16.90
210.224.109.7 104.21.17.106 104.21.17.110 245.143.184.147
104.21.17.112 104.21.17.119 104.21.17.154 104.21.17.172
104.21.17.221 104.21.17.226 104.21.17.237 104.21.17.55
2001:14ba:a8c9:8100:a049:6203:eebe:5a13 104.21.17.69 104.21.18.111 97.75.247.137