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 <<>> 104.21.4.137
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 54311
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.4.137.			IN	A

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

;; Query time: 17 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:27:59 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 137.4.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 137.4.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
101.51.104.215 attackspam
Unauthorized IMAP connection attempt
2020-08-08 13:45:35
37.134.195.202 attackspambots
Unauthorized IMAP connection attempt
2020-08-08 13:29:09
119.236.166.16 attackspam
Automatic report - Port Scan Attack
2020-08-08 13:29:26
195.154.108.118 attack
Aug  8 06:15:27 roki-contabo sshd\[12001\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=195.154.108.118  user=root
Aug  8 06:15:29 roki-contabo sshd\[12001\]: Failed password for root from 195.154.108.118 port 55910 ssh2
Aug  8 06:35:31 roki-contabo sshd\[12461\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=195.154.108.118  user=root
Aug  8 06:35:33 roki-contabo sshd\[12461\]: Failed password for root from 195.154.108.118 port 58152 ssh2
Aug  8 06:42:00 roki-contabo sshd\[12689\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=195.154.108.118  user=root
...
2020-08-08 13:00:38
79.120.118.82 attack
$f2bV_matches
2020-08-08 13:24:03
108.59.0.38 attackspam
High volume WP login attempts -cou
2020-08-08 13:48:10
5.188.86.156 attackspam
Many_bad_calls
2020-08-08 13:03:38
85.209.0.100 attackspam
SSH Brute-Force reported by Fail2Ban
2020-08-08 13:22:46
180.76.148.1 attack
Aug  7 21:56:21 dignus sshd[25721]: Failed password for invalid user 123abc! from 180.76.148.1 port 30399 ssh2
Aug  7 21:58:41 dignus sshd[26013]: Invalid user mcserveradmin from 180.76.148.1 port 54833
Aug  7 21:58:41 dignus sshd[26013]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=180.76.148.1
Aug  7 21:58:43 dignus sshd[26013]: Failed password for invalid user mcserveradmin from 180.76.148.1 port 54833 ssh2
Aug  7 22:01:14 dignus sshd[26358]: Invalid user 123Asd456 from 180.76.148.1 port 22772
...
2020-08-08 13:12:08
142.93.247.221 attack
Aug  8 00:35:03 NPSTNNYC01T sshd[13971]: Failed password for root from 142.93.247.221 port 60876 ssh2
Aug  8 00:39:34 NPSTNNYC01T sshd[14336]: Failed password for root from 142.93.247.221 port 43046 ssh2
...
2020-08-08 13:05:18
198.199.64.78 attack
Aug  8 05:51:03 server sshd[23213]: Failed password for root from 198.199.64.78 port 44346 ssh2
Aug  8 05:54:40 server sshd[27451]: Failed password for root from 198.199.64.78 port 42038 ssh2
Aug  8 05:58:10 server sshd[32019]: Failed password for root from 198.199.64.78 port 59250 ssh2
2020-08-08 13:15:31
150.109.99.243 attackspambots
Aug  8 05:58:05 mout sshd[20224]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=150.109.99.243  user=root
Aug  8 05:58:06 mout sshd[20224]: Failed password for root from 150.109.99.243 port 34224 ssh2
2020-08-08 13:21:26
222.186.175.23 attackbotsspam
Unauthorized connection attempt detected from IP address 222.186.175.23 to port 22
2020-08-08 13:14:31
181.129.7.202 attack
Unauthorized IMAP connection attempt
2020-08-08 13:52:31
61.177.172.142 attackbots
Aug  8 10:14:57 gw1 sshd[15805]: Failed password for root from 61.177.172.142 port 26676 ssh2
Aug  8 10:15:01 gw1 sshd[15805]: Failed password for root from 61.177.172.142 port 26676 ssh2
...
2020-08-08 13:18:09

Recently Reported IPs

104.21.4.130 104.21.4.13 104.21.4.141 104.21.4.145
104.21.4.133 104.21.4.151 104.21.4.149 104.21.69.244
104.21.4.154 104.21.4.158 104.21.4.153 104.21.4.161
104.21.4.170 104.21.4.169 104.21.4.16 104.21.69.25
104.21.4.177 104.21.4.186 104.21.4.183 104.21.4.185