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 <<>> 104.21.4.199
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 12085
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.4.199.			IN	A

;; AUTHORITY SECTION:
.			589	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022021801 1800 900 604800 86400

;; Query time: 16 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Sat Feb 19 03:29:59 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 199.4.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 199.4.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
132.232.30.87 attack
Mar  7 23:10:25 mout sshd[21723]: Invalid user john from 132.232.30.87 port 33122
2020-03-08 06:28:36
78.128.113.67 attackbotsspam
2020-03-07 23:07:16 dovecot_plain authenticator failed for \(\[78.128.113.67\]\) \[78.128.113.67\]: 535 Incorrect authentication data \(set_id=harald.schueller@jugend-ohne-grenzen.net\)
2020-03-07 23:07:23 dovecot_plain authenticator failed for \(\[78.128.113.67\]\) \[78.128.113.67\]: 535 Incorrect authentication data \(set_id=harald.schueller\)
2020-03-07 23:09:13 dovecot_plain authenticator failed for \(\[78.128.113.67\]\) \[78.128.113.67\]: 535 Incorrect authentication data \(set_id=harald.schueller@jugend-ohne-grenzen.net\)
2020-03-07 23:09:20 dovecot_plain authenticator failed for \(\[78.128.113.67\]\) \[78.128.113.67\]: 535 Incorrect authentication data \(set_id=harald.schueller\)
2020-03-07 23:10:29 dovecot_plain authenticator failed for \(\[78.128.113.67\]\) \[78.128.113.67\]: 535 Incorrect authentication data \(set_id=harald.schueller@jugend-ohne-grenzen.net\)
...
2020-03-08 06:23:24
45.146.203.130 attackbotsspam
Mar  7 14:13:05 mail.srvfarm.net postfix/smtpd[2761160]: NOQUEUE: reject: RCPT from unknown[45.146.203.130]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar  7 14:13:05 mail.srvfarm.net postfix/smtpd[2759319]: NOQUEUE: reject: RCPT from unknown[45.146.203.130]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar  7 14:13:05 mail.srvfarm.net postfix/smtpd[2760275]: NOQUEUE: reject: RCPT from unknown[45.146.203.130]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar  7 14:13:05 mail.srvfarm.net postfix/smtpd[2773733]: NOQUEUE: reject: RCPT from unknown[45.146.203.130]: 450
2020-03-08 05:56:34
157.230.123.253 attackbotsspam
Scanning random ports - tries to find possible vulnerable services
2020-03-08 05:52:42
45.55.80.186 attackbotsspam
Mar  7 20:54:55 vps647732 sshd[22174]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=45.55.80.186
Mar  7 20:54:57 vps647732 sshd[22174]: Failed password for invalid user rajesh from 45.55.80.186 port 35384 ssh2
...
2020-03-08 05:53:45
49.88.112.76 attack
Mar  8 04:20:13 webhost01 sshd[12087]: Failed password for root from 49.88.112.76 port 40264 ssh2
...
2020-03-08 05:48:08
191.26.201.241 attack
suspicious action Sat, 07 Mar 2020 10:26:17 -0300
2020-03-08 06:02:32
82.209.221.81 attackspambots
SSH invalid-user multiple login try
2020-03-08 06:20:59
192.236.194.2 attackbots
Mar  7 21:51:39 mail.srvfarm.net postfix/smtpd[2921718]: NOQUEUE: reject: RCPT from unknown[192.236.194.2]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar  7 21:51:39 mail.srvfarm.net postfix/smtpd[2921718]: NOQUEUE: reject: RCPT from unknown[192.236.194.2]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar  7 22:00:09 mail.srvfarm.net postfix/smtpd[2921717]: NOQUEUE: reject: RCPT from unknown[192.236.194.2]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Mar  7 22:01:39 mail.srvfarm.net postfix/smtpd[2921714]: NOQUEUE: reject: RCPT from unknown[192.236.194.2]: 450 4.1.8 : Sender address rejected: Domain not
2020-03-08 05:54:29
207.154.193.178 attackspam
Mar  7 22:54:26 ns382633 sshd\[23923\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=207.154.193.178  user=root
Mar  7 22:54:28 ns382633 sshd\[23923\]: Failed password for root from 207.154.193.178 port 41754 ssh2
Mar  7 23:06:44 ns382633 sshd\[26269\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=207.154.193.178  user=root
Mar  7 23:06:46 ns382633 sshd\[26269\]: Failed password for root from 207.154.193.178 port 57536 ssh2
Mar  7 23:10:49 ns382633 sshd\[27060\]: Invalid user apache from 207.154.193.178 port 55910
Mar  7 23:10:49 ns382633 sshd\[27060\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=207.154.193.178
2020-03-08 06:12:34
45.133.99.2 attack
Mar  7 22:50:54 relay postfix/smtpd\[16765\]: warning: unknown\[45.133.99.2\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Mar  7 22:51:04 relay postfix/smtpd\[13625\]: warning: unknown\[45.133.99.2\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Mar  7 22:55:29 relay postfix/smtpd\[16764\]: warning: unknown\[45.133.99.2\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Mar  7 22:55:47 relay postfix/smtpd\[13625\]: warning: unknown\[45.133.99.2\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Mar  7 22:56:43 relay postfix/smtpd\[17254\]: warning: unknown\[45.133.99.2\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...
2020-03-08 06:05:31
191.26.228.96 attack
suspicious action Sat, 07 Mar 2020 10:26:20 -0300
2020-03-08 06:00:58
216.154.201.132 attack
Mar  7 14:14:48 mail.srvfarm.net postfix/smtpd[2761160]: NOQUEUE: reject: RCPT from unknown[216.154.201.132]: 554 5.7.1 Service unavailable; Client host [216.154.201.132] blocked using bl.spamcop.net; Blocked - see https://www.spamcop.net/bl.shtml?216.154.201.132; from= to= proto=ESMTP helo=
Mar  7 14:14:48 mail.srvfarm.net postfix/smtpd[2761160]: NOQUEUE: reject: RCPT from unknown[216.154.201.132]: 554 5.7.1 Service unavailable; Client host [216.154.201.132] blocked using bl.spamcop.net; Blocked - see https://www.spamcop.net/bl.shtml?216.154.201.132; from= to= proto=ESMTP helo=
Mar  7 14:14:49 mail.srvfarm.net postfix/smtpd[2761160]: NOQUEUE: reject: RCPT from unknown[216.154.201.132]: 554 5.7.1 Service unavailable; Client host [216.154.201.132] blocked using bl.spamcop.net; Blocked - see https://www.spamcop.net/bl.shtml?216.154.201.132; from= to= proto=ESMT
2020-03-08 05:54:11
185.202.2.14 attackspam
20/3/7@17:10:48: FAIL: Alarm-Intrusion address from=185.202.2.14
...
2020-03-08 06:13:07
222.186.180.9 attackspambots
Mar  7 17:10:40 NPSTNNYC01T sshd[24674]: Failed password for root from 222.186.180.9 port 28570 ssh2
Mar  7 17:10:51 NPSTNNYC01T sshd[24674]: Failed password for root from 222.186.180.9 port 28570 ssh2
Mar  7 17:10:54 NPSTNNYC01T sshd[24674]: Failed password for root from 222.186.180.9 port 28570 ssh2
Mar  7 17:10:54 NPSTNNYC01T sshd[24674]: error: maximum authentication attempts exceeded for root from 222.186.180.9 port 28570 ssh2 [preauth]
...
2020-03-08 06:11:32

Recently Reported IPs

104.21.37.227 104.21.39.229 104.21.39.191 104.21.4.80
104.21.4.77 104.21.4.53 104.21.4.252 104.21.4.35
104.21.40.185 104.21.39.186 104.21.40.117 104.21.40.166
104.21.40.33 104.21.40.58 104.21.40.48 104.21.41.165
104.21.41.139 104.21.41.202 104.21.41.179 104.21.42.102