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 <<>> 104.21.10.21
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 48077
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.10.21.			IN	A

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

;; Query time: 59 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Thu Feb 17 17:31:53 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 21.10.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 21.10.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
5.196.65.85 attackspambots
Detected by Maltrail
2020-04-01 07:59:45
148.77.14.106 attackspambots
Mar 31 19:36:43 NPSTNNYC01T sshd[11499]: Failed password for root from 148.77.14.106 port 65443 ssh2
Mar 31 19:42:40 NPSTNNYC01T sshd[11869]: Failed password for root from 148.77.14.106 port 6527 ssh2
...
2020-04-01 07:47:56
111.161.41.156 attackspambots
Brute force SMTP login attempted.
...
2020-04-01 07:40:10
180.76.189.196 attackspambots
(sshd) Failed SSH login from 180.76.189.196 (CN/China/-): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SSHD; Logs: Apr  1 00:16:22 s1 sshd[32168]: Invalid user lirunchao from 180.76.189.196 port 40754
Apr  1 00:16:24 s1 sshd[32168]: Failed password for invalid user lirunchao from 180.76.189.196 port 40754 ssh2
Apr  1 00:25:30 s1 sshd[32434]: Invalid user fr from 180.76.189.196 port 51768
Apr  1 00:25:32 s1 sshd[32434]: Failed password for invalid user fr from 180.76.189.196 port 51768 ssh2
Apr  1 00:30:00 s1 sshd[32592]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=180.76.189.196  user=root
2020-04-01 07:42:39
111.132.0.178 attackspambots
Brute force SMTP login attempted.
...
2020-04-01 07:43:34
111.12.52.239 attackbotsspam
Brute force SMTP login attempted.
...
2020-04-01 07:52:42
92.118.38.82 attackspambots
Apr  1 01:54:35 v22019058497090703 postfix/smtpd[15454]: warning: unknown[92.118.38.82]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Apr  1 01:55:08 v22019058497090703 postfix/smtpd[15454]: warning: unknown[92.118.38.82]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Apr  1 01:55:41 v22019058497090703 postfix/smtpd[15454]: warning: unknown[92.118.38.82]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...
2020-04-01 07:56:22
122.176.40.9 attackbots
Apr  1 01:46:31 ns3164893 sshd[28343]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=122.176.40.9  user=root
Apr  1 01:46:32 ns3164893 sshd[28343]: Failed password for root from 122.176.40.9 port 36640 ssh2
...
2020-04-01 07:58:09
200.149.231.50 attackbotsspam
Mar 31 23:27:25 sip sshd[21623]: Failed password for root from 200.149.231.50 port 54286 ssh2
Mar 31 23:29:09 sip sshd[22050]: Failed password for root from 200.149.231.50 port 45306 ssh2
2020-04-01 07:52:17
111.10.43.244 attackbots
Brute force SMTP login attempted.
...
2020-04-01 07:58:27
110.80.17.26 attackbots
SSH Invalid Login
2020-04-01 08:11:00
121.122.97.162 attack
Telnetd brute force attack detected by fail2ban
2020-04-01 08:01:31
103.25.58.129 attack
Apr  1 00:48:34 www2 sshd\[50108\]: Invalid user admin from 103.25.58.129Apr  1 00:48:36 www2 sshd\[50108\]: Failed password for invalid user admin from 103.25.58.129 port 45504 ssh2Apr  1 00:53:26 www2 sshd\[50651\]: Failed password for root from 103.25.58.129 port 58800 ssh2
...
2020-04-01 07:56:09
118.97.213.194 attackspam
SSH Login Bruteforce
2020-04-01 08:06:29
45.249.111.40 attack
$f2bV_matches
2020-04-01 08:06:03

Recently Reported IPs

104.21.10.209 104.21.10.213 104.21.10.214 104.21.10.224
104.21.10.227 104.21.10.236 108.87.42.62 104.21.10.24
104.21.10.240 104.21.10.243 104.21.10.248 104.21.10.25
22.190.211.156 104.21.10.250 104.21.10.252 104.21.10.28
104.21.10.31 104.21.10.35 104.21.10.36 104.21.10.38