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 <<>> 104.21.28.104
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 17106
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.28.104.			IN	A

;; AUTHORITY SECTION:
.			286	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022021700 1800 900 604800 86400

;; Query time: 79 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:21:14 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 104.28.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 104.28.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
116.232.34.219 attackspam
Apr  2 23:32:14 our-server-hostname postfix/smtpd[15144]: connect from unknown[116.232.34.219]
Apr x@x
Apr x@x
Apr x@x
Apr x@x
Apr x@x
Apr x@x
Apr x@x
Apr x@x
Apr x@x
Apr x@x


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=116.232.34.219
2020-04-03 04:01:29
80.211.78.155 attack
SSH brutforce
2020-04-03 03:43:21
114.231.82.21 attackbotsspam
Apr  2 08:31:41 esmtp postfix/smtpd[31239]: lost connection after AUTH from unknown[114.231.82.21]
Apr  2 08:31:44 esmtp postfix/smtpd[31251]: lost connection after AUTH from unknown[114.231.82.21]
Apr  2 08:31:53 esmtp postfix/smtpd[31293]: lost connection after AUTH from unknown[114.231.82.21]
Apr  2 08:31:55 esmtp postfix/smtpd[31239]: lost connection after AUTH from unknown[114.231.82.21]
Apr  2 08:31:57 esmtp postfix/smtpd[31293]: lost connection after AUTH from unknown[114.231.82.21]

........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=114.231.82.21
2020-04-03 03:51:37
139.59.4.62 attack
Invalid user da from 139.59.4.62 port 45704
2020-04-03 03:59:50
82.226.200.64 attack
trying to access non-authorized port
2020-04-03 03:42:36
51.91.158.160 attack
ET CINS Active Threat Intelligence Poor Reputation IP group 37 - port: 23 proto: TCP cat: Misc Attack
2020-04-03 03:59:06
172.81.243.232 attack
Apr  2 12:09:32 lanister sshd[32618]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=172.81.243.232  user=root
Apr  2 12:09:34 lanister sshd[32618]: Failed password for root from 172.81.243.232 port 36452 ssh2
Apr  2 12:23:51 lanister sshd[348]: Invalid user br from 172.81.243.232
Apr  2 12:23:51 lanister sshd[348]: Invalid user br from 172.81.243.232
2020-04-03 03:53:34
171.35.169.94 attackbotsspam
serveres are UTC -0400
Lines containing failures of 171.35.169.94
Apr  2 08:32:48 tux2 sshd[16999]: Invalid user admin from 171.35.169.94 port 43995
Apr  2 08:32:48 tux2 sshd[16999]: Failed password for invalid user admin from 171.35.169.94 port 43995 ssh2
Apr  2 08:32:49 tux2 sshd[16999]: Connection closed by invalid user admin 171.35.169.94 port 43995 [preauth]
Apr  2 08:32:55 tux2 sshd[17003]: Invalid user admin from 171.35.169.94 port 44032
Apr  2 08:32:55 tux2 sshd[17003]: Failed password for invalid user admin from 171.35.169.94 port 44032 ssh2
Apr  2 08:32:56 tux2 sshd[17003]: Connection closed by invalid user admin 171.35.169.94 port 44032 [preauth]



........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=171.35.169.94
2020-04-03 03:58:47
188.166.67.130 attack
Apr  2 18:20:41 lock-38 sshd[475251]: Failed password for root from 188.166.67.130 port 38284 ssh2
Apr  2 18:22:56 lock-38 sshd[475298]: Failed password for root from 188.166.67.130 port 42452 ssh2
Apr  2 18:25:18 lock-38 sshd[475375]: Invalid user admin from 188.166.67.130 port 46626
Apr  2 18:25:18 lock-38 sshd[475375]: Invalid user admin from 188.166.67.130 port 46626
Apr  2 18:25:18 lock-38 sshd[475375]: Failed password for invalid user admin from 188.166.67.130 port 46626 ssh2
...
2020-04-03 03:39:06
77.201.219.171 attackspam
Invalid user th from 77.201.219.171 port 59902
2020-04-03 03:56:48
54.38.139.210 attackspambots
Invalid user eric from 54.38.139.210 port 40144
2020-04-03 04:05:14
162.243.133.101 attack
Attempts against Pop3/IMAP
2020-04-03 03:27:19
77.222.191.52 attackbots
MultiHost/MultiPort Probe, Scan, Hack -
2020-04-03 03:30:37
36.111.184.80 attackspam
SSH bruteforce
2020-04-03 03:42:51
103.253.2.163 attackspam
20/4/2@08:41:39: FAIL: Alarm-Network address from=103.253.2.163
...
2020-04-03 03:41:01

Recently Reported IPs

104.21.27.99 104.21.28.111 104.21.28.113 104.21.28.106
104.21.28.107 104.21.28.123 104.21.28.120 104.21.28.117
104.21.28.132 104.21.28.119 104.21.28.133 104.21.28.131
104.21.28.134 104.21.68.80 104.21.28.135 104.21.28.136
104.21.28.145 104.21.28.150 104.21.28.152 104.21.28.138