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 <<>> 104.21.72.40
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 10719
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.72.40.			IN	A

;; AUTHORITY SECTION:
.			597	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022021701 1800 900 604800 86400

;; Query time: 58 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:51:17 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 40.72.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 40.72.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
141.98.80.22 attack
RDP Bruteforce
2019-09-12 08:58:04
123.207.142.208 attackspam
Sep 11 14:08:50 php1 sshd\[22679\]: Invalid user ftptest from 123.207.142.208
Sep 11 14:08:50 php1 sshd\[22679\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=123.207.142.208
Sep 11 14:08:52 php1 sshd\[22679\]: Failed password for invalid user ftptest from 123.207.142.208 port 51054 ssh2
Sep 11 14:13:41 php1 sshd\[23346\]: Invalid user git from 123.207.142.208
Sep 11 14:13:41 php1 sshd\[23346\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=123.207.142.208
2019-09-12 08:31:10
188.131.216.109 attackspambots
Sep 12 00:20:53 game-panel sshd[3645]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=188.131.216.109
Sep 12 00:20:55 game-panel sshd[3645]: Failed password for invalid user user01 from 188.131.216.109 port 44914 ssh2
Sep 12 00:25:52 game-panel sshd[3817]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=188.131.216.109
2019-09-12 08:34:23
87.255.193.18 attackbots
@LucianNitescu Personal Honeypot Network <<<>>> Donate at paypal.me/LNitescu <<<>>> 2019-09-11 17:31:49,738 INFO [amun_request_handler] PortScan Detected on Port: 445 (87.255.193.18)
2019-09-12 08:39:01
159.89.169.137 attackspam
Sep 11 19:09:03 game-panel sshd[21678]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=159.89.169.137
Sep 11 19:09:04 game-panel sshd[21678]: Failed password for invalid user mpiuser from 159.89.169.137 port 59934 ssh2
Sep 11 19:16:14 game-panel sshd[22131]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=159.89.169.137
2019-09-12 08:41:53
183.15.121.50 attackbotsspam
Sep 11 20:26:46 TORMINT sshd\[4521\]: Invalid user 123456 from 183.15.121.50
Sep 11 20:26:46 TORMINT sshd\[4521\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=183.15.121.50
Sep 11 20:26:48 TORMINT sshd\[4521\]: Failed password for invalid user 123456 from 183.15.121.50 port 46000 ssh2
...
2019-09-12 08:32:26
217.7.239.117 attack
Sep 12 03:56:36 www5 sshd\[13532\]: Invalid user ftpuser from 217.7.239.117
Sep 12 03:56:36 www5 sshd\[13532\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=217.7.239.117
Sep 12 03:56:38 www5 sshd\[13532\]: Failed password for invalid user ftpuser from 217.7.239.117 port 60402 ssh2
...
2019-09-12 08:57:04
116.236.100.218 attackspambots
Sep 12 00:08:28 Ubuntu-1404-trusty-64-minimal sshd\[8261\]: Invalid user admin from 116.236.100.218
Sep 12 00:08:28 Ubuntu-1404-trusty-64-minimal sshd\[8261\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=116.236.100.218
Sep 12 00:08:31 Ubuntu-1404-trusty-64-minimal sshd\[8261\]: Failed password for invalid user admin from 116.236.100.218 port 44771 ssh2
Sep 12 00:08:33 Ubuntu-1404-trusty-64-minimal sshd\[8261\]: Failed password for invalid user admin from 116.236.100.218 port 44771 ssh2
Sep 12 00:08:35 Ubuntu-1404-trusty-64-minimal sshd\[8261\]: Failed password for invalid user admin from 116.236.100.218 port 44771 ssh2
2019-09-12 08:51:28
222.209.232.99 attackspam
[Tue Sep 10 03:00:01 2019] Failed password for r.r from 222.209.232.99 port 38864 ssh2
[Tue Sep 10 03:00:05 2019] Failed password for r.r from 222.209.232.99 port 45618 ssh2
[Tue Sep 10 03:00:09 2019] Failed password for r.r from 222.209.232.99 port 51878 ssh2
[Tue Sep 10 03:00:14 2019] Failed password for r.r from 222.209.232.99 port 59316 ssh2
[Tue Sep 10 03:00:19 2019] Failed password for r.r from 222.209.232.99 port 40686 ssh2


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=222.209.232.99
2019-09-12 09:16:27
178.128.223.34 attack
2019-09-12T00:46:58.572812abusebot-5.cloudsearch.cf sshd\[4990\]: Invalid user redmine from 178.128.223.34 port 58384
2019-09-12 09:17:42
129.115.160.11 attack
Sep  9 21:40:10 mail1 sshd[9873]: Invalid user proxyuser from 129.115.160.11 port 53938
Sep  9 21:40:10 mail1 sshd[9873]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=129.115.160.11
Sep  9 21:40:13 mail1 sshd[9873]: Failed password for invalid user proxyuser from 129.115.160.11 port 53938 ssh2
Sep  9 21:40:13 mail1 sshd[9873]: Received disconnect from 129.115.160.11 port 53938:11: Bye Bye [preauth]
Sep  9 21:40:13 mail1 sshd[9873]: Disconnected from 129.115.160.11 port 53938 [preauth]


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=129.115.160.11
2019-09-12 09:04:05
213.4.33.11 attack
Sep 11 22:58:08 root sshd[9036]: Failed password for root from 213.4.33.11 port 59178 ssh2
Sep 11 23:03:49 root sshd[9086]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=213.4.33.11 
Sep 11 23:03:51 root sshd[9086]: Failed password for invalid user 107 from 213.4.33.11 port 33498 ssh2
...
2019-09-12 09:05:38
2.134.143.208 attackspambots
@LucianNitescu Personal Honeypot Network <<<>>> Donate at paypal.me/LNitescu <<<>>> 2019-09-11 17:29:32,658 INFO [amun_request_handler] PortScan Detected on Port: 445 (2.134.143.208)
2019-09-12 08:53:54
222.181.11.216 attackspambots
$f2bV_matches
2019-09-12 09:05:16
185.175.93.105 attack
09/11/2019-20:53:04.583355 185.175.93.105 Protocol: 6 ET DROP Dshield Block Listed Source group 1
2019-09-12 08:54:21

Recently Reported IPs

104.21.72.44 104.21.72.47 104.21.72.42 104.21.72.50
104.21.72.54 104.21.72.48 104.21.72.51 104.21.72.52
104.21.72.58 104.21.72.56 104.21.72.61 104.21.72.62
104.21.72.65 104.21.72.60 104.21.72.64 104.21.72.63
104.21.72.67 104.21.72.69 104.21.72.71 104.21.72.66