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:
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Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 104.21.30.51
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 2876
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.30.51.			IN	A

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

;; Query time: 64 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:23:12 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 51.30.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 51.30.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
119.204.168.61 attackbots
Sep 13 11:35:16 MK-Soft-VM4 sshd\[885\]: Invalid user xguest from 119.204.168.61 port 36880
Sep 13 11:35:16 MK-Soft-VM4 sshd\[885\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=119.204.168.61
Sep 13 11:35:18 MK-Soft-VM4 sshd\[885\]: Failed password for invalid user xguest from 119.204.168.61 port 36880 ssh2
...
2019-09-13 19:39:29
115.124.94.146 attackspam
Sep 13 13:20:50 host sshd\[28051\]: Invalid user test from 115.124.94.146 port 39436
Sep 13 13:20:50 host sshd\[28051\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=115.124.94.146
...
2019-09-13 19:50:03
45.164.75.213 attackbots
Lines containing failures of 45.164.75.213
Sep 13 13:06:51 myhost sshd[20648]: User r.r from 45.164.75.213 not allowed because not listed in AllowUsers
Sep 13 13:06:51 myhost sshd[20648]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=45.164.75.213  user=r.r
Sep 13 13:06:53 myhost sshd[20648]: Failed password for invalid user r.r from 45.164.75.213 port 4304 ssh2
Sep 13 13:07:05 myhost sshd[20648]: message repeated 5 serveres: [ Failed password for invalid user r.r from 45.164.75.213 port 4304 ssh2]
Sep 13 13:07:05 myhost sshd[20648]: error: maximum authentication attempts exceeded for invalid user r.r from 45.164.75.213 port 4304 ssh2 [preauth]
Sep 13 13:07:05 myhost sshd[20648]: Disconnecting invalid user r.r 45.164.75.213 port 4304: Too many authentication failures [preauth]
Sep 13 13:07:05 myhost sshd[20648]: PAM 5 more authentication failures; logname= uid=0 euid=0 tty=ssh ruser= rhost=45.164.75.213  user=r.r


........
--------------------------------------------
2019-09-13 19:43:33
112.85.42.227 attackbotsspam
Sep 13 07:20:15 TORMINT sshd\[14411\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.85.42.227  user=root
Sep 13 07:20:17 TORMINT sshd\[14411\]: Failed password for root from 112.85.42.227 port 56974 ssh2
Sep 13 07:20:20 TORMINT sshd\[14411\]: Failed password for root from 112.85.42.227 port 56974 ssh2
...
2019-09-13 19:36:49
42.228.210.58 attack
Lines containing failures of 42.228.210.58
Sep 13 12:47:54 shared07 sshd[13432]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=42.228.210.58  user=r.r
Sep 13 12:47:56 shared07 sshd[13432]: Failed password for r.r from 42.228.210.58 port 60291 ssh2
Sep 13 12:47:58 shared07 sshd[13432]: Failed password for r.r from 42.228.210.58 port 60291 ssh2


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=42.228.210.58
2019-09-13 19:51:30
190.13.173.67 attack
Sep 13 13:15:48 root sshd[23837]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=190.13.173.67 
Sep 13 13:15:50 root sshd[23837]: Failed password for invalid user 1 from 190.13.173.67 port 35192 ssh2
Sep 13 13:21:14 root sshd[23891]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=190.13.173.67 
...
2019-09-13 19:26:03
5.135.165.51 attack
Sep 13 12:38:10 bouncer sshd\[16327\]: Invalid user 1 from 5.135.165.51 port 41890
Sep 13 12:38:10 bouncer sshd\[16327\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.135.165.51 
Sep 13 12:38:11 bouncer sshd\[16327\]: Failed password for invalid user 1 from 5.135.165.51 port 41890 ssh2
...
2019-09-13 19:17:20
170.254.81.52 attackbotsspam
Unauthorized connection attempt from IP address 170.254.81.52 on Port 445(SMB)
2019-09-13 19:10:35
118.184.215.117 attack
Sep 13 13:20:58 ns37 sshd[20037]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=118.184.215.117
2019-09-13 19:39:59
120.195.144.116 attack
Unauthorized IMAP connection attempt
2019-09-13 19:25:39
85.105.74.194 attack
Unauthorized connection attempt from IP address 85.105.74.194 on Port 445(SMB)
2019-09-13 19:40:52
49.88.112.68 attack
Sep 13 13:23:24 mail sshd\[30208\]: Failed password for root from 49.88.112.68 port 21631 ssh2
Sep 13 13:23:26 mail sshd\[30208\]: Failed password for root from 49.88.112.68 port 21631 ssh2
Sep 13 13:26:29 mail sshd\[30531\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.88.112.68  user=root
Sep 13 13:26:31 mail sshd\[30531\]: Failed password for root from 49.88.112.68 port 13941 ssh2
Sep 13 13:26:34 mail sshd\[30531\]: Failed password for root from 49.88.112.68 port 13941 ssh2
2019-09-13 19:35:09
185.52.2.165 attack
WordPress wp-login brute force :: 185.52.2.165 0.052 BYPASS [13/Sep/2019:17:53:49  1000] [censored_4] "POST /wp-login.php HTTP/1.1" 200 3989 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
2019-09-13 19:11:23
222.186.173.119 attack
2019-09-13T13:28:02.625763centos sshd\[6914\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.173.119  user=root
2019-09-13T13:28:04.894724centos sshd\[6914\]: Failed password for root from 222.186.173.119 port 64001 ssh2
2019-09-13T13:28:07.200530centos sshd\[6914\]: Failed password for root from 222.186.173.119 port 64001 ssh2
2019-09-13 19:29:02
165.22.144.206 attack
SSH Brute Force, server-1 sshd[15426]: Failed password for root from 165.22.144.206 port 40206 ssh2
2019-09-13 19:14:43

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