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 <<>> 104.21.16.20
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 2686
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.16.20.			IN	A

;; AUTHORITY SECTION:
.			230	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022022202 1800 900 604800 86400

;; Query time: 17 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Wed Feb 23 12:58:10 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 20.16.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 20.16.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
222.181.205.137 attack
Unauthorised access (Jan 10) SRC=222.181.205.137 LEN=40 TTL=117 ID=18627 TCP DPT=1433 WINDOW=1024 SYN
2020-01-10 17:12:18
77.45.223.99 attackspam
77.45.223.99 - - [10/Jan/2020:05:51:59 +0100] "GET /security/wp-login.php HTTP/1.1" 404 16601 "https://www.google.com/" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10) AppleWebKit/537.16 (KHTML, like Gecko) Version/8.0 Safari/537.16"
77.45.223.99 - - [10/Jan/2020:05:52:00 +0100] "GET /blog/wp-login.php HTTP/1.1" 404 16577 "https://www.google.com/" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10) AppleWebKit/537.16 (KHTML, like Gecko) Version/8.0 Safari/537.16"
77.45.223.99 - - [10/Jan/2020:05:52:01 +0100] "GET /blogs/wp-login.php HTTP/1.1" 404 16625 "https://www.google.com/" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10) AppleWebKit/537.16 (KHTML, like Gecko) Version/8.0 Safari/537.16"
77.45.223.99 - - [10/Jan/2020:05:52:01 +0100] "GET /web/wp-login.php HTTP/1.1" 404 16599 "https://www.google.com/" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10) AppleWebKit/537.16 (KHTML, like Gecko) Version
...
2020-01-10 17:11:55
118.25.54.60 attackspam
Jan 10 08:06:35 Ubuntu-1404-trusty-64-minimal sshd\[7292\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=118.25.54.60  user=root
Jan 10 08:06:36 Ubuntu-1404-trusty-64-minimal sshd\[7292\]: Failed password for root from 118.25.54.60 port 34374 ssh2
Jan 10 09:44:58 Ubuntu-1404-trusty-64-minimal sshd\[30696\]: Invalid user bgw from 118.25.54.60
Jan 10 09:44:58 Ubuntu-1404-trusty-64-minimal sshd\[30696\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=118.25.54.60
Jan 10 09:45:00 Ubuntu-1404-trusty-64-minimal sshd\[30696\]: Failed password for invalid user bgw from 118.25.54.60 port 43780 ssh2
2020-01-10 17:03:29
2.82.138.44 attack
01/09/2020-23:51:57.087363 2.82.138.44 Protocol: 6 ET CINS Active Threat Intelligence Poor Reputation IP group 8
2020-01-10 17:15:08
222.186.30.12 attackspam
SSH Brute Force, server-1 sshd[4498]: Failed password for root from 222.186.30.12 port 35189 ssh2
2020-01-10 16:52:47
112.215.113.10 attackbotsspam
Jan 10 08:14:48 mail sshd\[4398\]: Invalid user oy from 112.215.113.10
Jan 10 08:14:48 mail sshd\[4398\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.215.113.10
Jan 10 08:14:50 mail sshd\[4398\]: Failed password for invalid user oy from 112.215.113.10 port 58572 ssh2
...
2020-01-10 16:50:29
80.211.231.224 attackspambots
Jan 10 06:56:21 legacy sshd[26361]: Failed password for root from 80.211.231.224 port 34030 ssh2
Jan 10 06:59:35 legacy sshd[26550]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=80.211.231.224
Jan 10 06:59:36 legacy sshd[26550]: Failed password for invalid user smc from 80.211.231.224 port 37032 ssh2
...
2020-01-10 17:07:20
188.36.121.218 attackspam
ssh brute force
2020-01-10 16:41:04
49.88.65.107 attack
Jan 10 05:52:07 grey postfix/smtpd\[821\]: NOQUEUE: reject: RCPT from unknown\[49.88.65.107\]: 554 5.7.1 Service unavailable\; Client host \[49.88.65.107\] blocked using truncate.gbudb.net\; http://www.gbudb.com/truncate/ \[49.88.65.107\]\; from=\ to=\ proto=ESMTP helo=\
...
2020-01-10 17:08:54
188.166.246.46 attack
Jan 10 06:17:38 plex sshd[773]: Invalid user viper from 188.166.246.46 port 59862
2020-01-10 16:40:17
92.253.171.172 attack
SSH Brute-Forcing (server1)
2020-01-10 16:48:58
145.239.83.89 attackbotsspam
Jan 10 06:05:35 legacy sshd[24009]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=145.239.83.89
Jan 10 06:05:37 legacy sshd[24009]: Failed password for invalid user test2 from 145.239.83.89 port 42394 ssh2
Jan 10 06:08:41 legacy sshd[24189]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=145.239.83.89
...
2020-01-10 17:01:05
213.6.13.134 attackbotsspam
1578631912 - 01/10/2020 05:51:52 Host: 213.6.13.134/213.6.13.134 Port: 445 TCP Blocked
2020-01-10 17:17:35
37.148.1.171 attackbots
3389BruteforceFW21
2020-01-10 16:57:48
123.207.142.31 attackbots
Jan 10 05:55:35 ip-172-31-62-245 sshd\[30927\]: Invalid user tao from 123.207.142.31\
Jan 10 05:55:37 ip-172-31-62-245 sshd\[30927\]: Failed password for invalid user tao from 123.207.142.31 port 45501 ssh2\
Jan 10 05:59:05 ip-172-31-62-245 sshd\[31009\]: Invalid user oracle from 123.207.142.31\
Jan 10 05:59:07 ip-172-31-62-245 sshd\[31009\]: Failed password for invalid user oracle from 123.207.142.31 port 58498 ssh2\
Jan 10 06:02:29 ip-172-31-62-245 sshd\[31043\]: Failed password for root from 123.207.142.31 port 43262 ssh2\
2020-01-10 17:01:25

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