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 <<>> 104.21.37.40
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 15245
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.37.40.			IN	A

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

;; Query time: 56 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:26:42 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 40.37.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 40.37.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
10.20.20.10 attackspam
Invalid user OpenVASVT from 10.20.20.10 port 56141
2020-07-11 23:03:01
83.239.172.146 attackspam
Unauthorized connection attempt from IP address 83.239.172.146 on Port 445(SMB)
2020-07-11 22:43:05
50.70.229.239 attackspambots
Jul 11 11:17:39 XXX sshd[6728]: Invalid user celene from 50.70.229.239 port 44024
2020-07-11 23:18:20
196.188.72.144 attackspam
Unauthorized connection attempt from IP address 196.188.72.144 on Port 445(SMB)
2020-07-11 22:52:55
176.31.255.63 attackbots
Jul 11 14:30:39 rush sshd[3905]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=176.31.255.63
Jul 11 14:30:41 rush sshd[3905]: Failed password for invalid user whipple from 176.31.255.63 port 54370 ssh2
Jul 11 14:33:43 rush sshd[3953]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=176.31.255.63
...
2020-07-11 23:04:05
14.248.121.8 attack
Unauthorized connection attempt from IP address 14.248.121.8 on Port 445(SMB)
2020-07-11 23:06:55
13.82.227.246 attackbotsspam
Time:     Sat Jul 11 08:40:04 2020 -0300
IP:       13.82.227.246 (US/United States/-)
Failures: 20 (WordPressBruteForcePOST)
Interval: 3600 seconds
Blocked:  Permanent Block
2020-07-11 23:02:00
103.21.53.11 attack
Jul 11 09:13:47 raspberrypi sshd[4255]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=103.21.53.11 
Jul 11 09:13:48 raspberrypi sshd[4255]: Failed password for invalid user crocker from 103.21.53.11 port 35670 ssh2
Jul 11 09:17:48 raspberrypi sshd[4684]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=103.21.53.11 
...
2020-07-11 23:17:57
45.129.56.200 attackbotsspam
malicious Brute-Force reported by https://www.patrick-binder.de
...
2020-07-11 23:05:28
103.120.221.99 attackbotsspam
Jul 11 14:33:17 meumeu sshd[387818]: Invalid user chenshiquan from 103.120.221.99 port 50306
Jul 11 14:33:17 meumeu sshd[387818]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=103.120.221.99 
Jul 11 14:33:17 meumeu sshd[387818]: Invalid user chenshiquan from 103.120.221.99 port 50306
Jul 11 14:33:19 meumeu sshd[387818]: Failed password for invalid user chenshiquan from 103.120.221.99 port 50306 ssh2
Jul 11 14:34:21 meumeu sshd[387864]: Invalid user www from 103.120.221.99 port 34570
Jul 11 14:34:21 meumeu sshd[387864]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=103.120.221.99 
Jul 11 14:34:21 meumeu sshd[387864]: Invalid user www from 103.120.221.99 port 34570
Jul 11 14:34:24 meumeu sshd[387864]: Failed password for invalid user www from 103.120.221.99 port 34570 ssh2
Jul 11 14:42:40 meumeu sshd[388258]: Invalid user elysia from 103.120.221.99 port 49848
...
2020-07-11 23:06:08
186.89.248.224 attackbotsspam
Unauthorized connection attempt from IP address 186.89.248.224 on Port 445(SMB)
2020-07-11 22:48:57
192.42.116.20 attack
2020-07-11 06:58:41.229567-0500  localhost sshd[31245]: Failed password for root from 192.42.116.20 port 35852 ssh2
2020-07-11 22:53:22
118.89.236.249 attackbotsspam
$f2bV_matches
2020-07-11 23:21:13
110.175.173.142 attackbots
Jul 11 15:57:25 OPSO sshd\[23992\]: Invalid user ftpuser from 110.175.173.142 port 42115
Jul 11 15:57:25 OPSO sshd\[23992\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=110.175.173.142
Jul 11 15:57:27 OPSO sshd\[23992\]: Failed password for invalid user ftpuser from 110.175.173.142 port 42115 ssh2
Jul 11 16:00:25 OPSO sshd\[24578\]: Invalid user conectiva from 110.175.173.142 port 33006
Jul 11 16:00:25 OPSO sshd\[24578\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=110.175.173.142
2020-07-11 23:00:07
138.197.145.163 attack
firewall-block, port(s): 135/tcp
2020-07-11 22:47:12

Recently Reported IPs

104.21.37.55 104.21.37.56 104.21.37.6 104.21.37.67
104.21.37.70 104.21.37.60 104.21.37.8 104.21.37.73
104.21.37.86 104.21.37.9 104.21.69.213 104.21.37.79
104.21.37.80 104.21.37.94 104.21.37.87 104.21.37.95
104.21.37.96 104.21.37.97 104.21.38.101 104.21.38.107