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:
b
Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 104.21.21.6
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 57312
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.21.6.			IN	A

;; AUTHORITY SECTION:
.			150	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022022000 1800 900 604800 86400

;; Query time: 18 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Sun Feb 20 19:30:22 CST 2022
;; MSG SIZE  rcvd: 104
Host info
Host 6.21.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 6.21.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
103.12.246.10 attackbots
RDPBruteCAu24
2019-12-25 00:08:48
103.223.5.212 attack
Dec 24 16:36:31 grey postfix/smtpd\[25452\]: NOQUEUE: reject: RCPT from unknown\[103.223.5.212\]: 554 5.7.1 Service unavailable\; Client host \[103.223.5.212\] blocked using truncate.gbudb.net\; http://www.gbudb.com/truncate/ \[103.223.5.212\]\; from=\ to=\ proto=ESMTP helo=\<1fe593dd.prostatewell.xyz\>
...
2019-12-24 23:38:45
14.184.251.199 attackspam
1577201762 - 12/24/2019 16:36:02 Host: 14.184.251.199/14.184.251.199 Port: 445 TCP Blocked
2019-12-24 23:57:05
101.99.14.176 attackspam
Unauthorized connection attempt detected from IP address 101.99.14.176 to port 445
2019-12-24 23:41:08
65.49.20.113 attackspam
22/tcp 443/udp...
[2019-12-17/24]4pkt,1pt.(tcp),1pt.(udp)
2019-12-25 00:07:32
129.204.109.127 attack
SSH Bruteforce attempt
2019-12-24 23:51:27
51.77.157.78 attackspambots
Dec 24 13:32:56 ws12vmsma01 sshd[55311]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=78.ip-51-77-157.eu  user=lp
Dec 24 13:32:58 ws12vmsma01 sshd[55311]: Failed password for lp from 51.77.157.78 port 37458 ssh2
Dec 24 13:35:52 ws12vmsma01 sshd[55713]: Invalid user abhiram from 51.77.157.78
...
2019-12-25 00:01:28
31.129.138.121 attackspambots
12/24/2019-10:36:38.762868 31.129.138.121 Protocol: 6 ET SCAN NMAP -sS window 1024
2019-12-24 23:37:01
152.32.185.30 attack
Dec 24 06:59:05 ahost sshd[23916]: Invalid user colley from 152.32.185.30
Dec 24 06:59:05 ahost sshd[23916]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=152.32.185.30 
Dec 24 06:59:06 ahost sshd[23916]: Failed password for invalid user colley from 152.32.185.30 port 44954 ssh2
Dec 24 06:59:06 ahost sshd[23916]: Received disconnect from 152.32.185.30: 11: Bye Bye [preauth]
Dec 24 06:59:32 ahost sshd[23953]: Invalid user coolguy from 152.32.185.30
Dec 24 06:59:32 ahost sshd[23953]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=152.32.185.30 
Dec 24 06:59:34 ahost sshd[23953]: Failed password for invalid user coolguy from 152.32.185.30 port 48000 ssh2
Dec 24 06:59:34 ahost sshd[23953]: Received disconnect from 152.32.185.30: 11: Bye Bye [preauth]
Dec 24 06:59:48 ahost sshd[23984]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=152.32.185.30  user=r.........
------------------------------
2019-12-24 23:35:23
88.147.148.124 attack
(sshd) Failed SSH login from 88.147.148.124 (RU/Russia/PPPoE-88-147-148-124.san.ru): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_TRIGGER; Logs: Dec 24 10:36:25 host sshd[29053]: Invalid user dugger from 88.147.148.124 port 59938
2019-12-24 23:39:07
71.6.146.186 attackspam
Scanning random ports - tries to find possible vulnerable services
2019-12-24 23:27:50
62.28.34.125 attackspambots
Dec 24 13:44:36 IngegnereFirenze sshd[25825]: Failed password for invalid user kx from 62.28.34.125 port 63530 ssh2
...
2019-12-24 23:29:03
24.127.191.38 attack
Dec 24 15:39:22 pi sshd\[21440\]: Invalid user polman from 24.127.191.38 port 59530
Dec 24 15:39:22 pi sshd\[21440\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=24.127.191.38
Dec 24 15:39:25 pi sshd\[21440\]: Failed password for invalid user polman from 24.127.191.38 port 59530 ssh2
Dec 24 15:41:57 pi sshd\[21478\]: Invalid user zy from 24.127.191.38 port 54512
Dec 24 15:41:57 pi sshd\[21478\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=24.127.191.38
...
2019-12-24 23:55:18
43.243.128.213 attackbots
Automatic report - Banned IP Access
2019-12-24 23:56:32
121.67.246.132 attack
Dec 24 15:35:39 unicornsoft sshd\[14375\]: Invalid user mishina from 121.67.246.132
Dec 24 15:35:39 unicornsoft sshd\[14375\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=121.67.246.132
Dec 24 15:35:41 unicornsoft sshd\[14375\]: Failed password for invalid user mishina from 121.67.246.132 port 51838 ssh2
2019-12-25 00:08:12

Recently Reported IPs

104.21.21.46 104.21.22.117 104.21.22.106 104.21.21.51
104.21.22.121 104.21.22.128 104.21.21.89 114.28.84.255
104.21.22.17 104.21.22.140 104.21.22.138 104.21.22.183
104.21.22.166 104.21.22.147 104.21.22.179 104.21.22.197
104.21.22.159 104.21.22.19 104.21.22.205 104.21.22.211