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: None

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 <<>> 104.21.12.51
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 60854
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.12.51.			IN	A

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

;; Query time: 15 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:10:25 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 51.12.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 51.12.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
192.144.130.62 attackbotsspam
Nov 15 17:38:48 hosting sshd[4114]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=192.144.130.62  user=root
Nov 15 17:38:50 hosting sshd[4114]: Failed password for root from 192.144.130.62 port 34284 ssh2
...
2019-11-16 04:06:36
110.188.70.99 attackbots
Nov 15 15:39:12 lnxmail61 sshd[18880]: Failed password for root from 110.188.70.99 port 44501 ssh2
Nov 15 15:39:12 lnxmail61 sshd[18880]: Failed password for root from 110.188.70.99 port 44501 ssh2
2019-11-16 03:53:30
219.143.126.171 attackspambots
ICMP MH Probe, Scan /Distributed -
2019-11-16 03:45:14
218.95.250.210 attackbots
ICMP MH Probe, Scan /Distributed -
2019-11-16 03:55:24
103.121.173.249 attack
MultiHost/MultiPort Probe, Scan, Hack -
2019-11-16 03:42:40
124.243.198.190 attackbotsspam
2019-11-15T17:59:39.565325abusebot-8.cloudsearch.cf sshd\[14411\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=124.243.198.190  user=root
2019-11-16 03:57:36
217.146.1.102 attackbots
ICMP MH Probe, Scan /Distributed -
2019-11-16 04:04:38
222.186.175.202 attackbotsspam
"Fail2Ban detected SSH brute force attempt"
2019-11-16 03:40:44
61.69.254.46 attackspambots
$f2bV_matches
2019-11-16 03:58:30
81.134.41.100 attackbots
Nov 15 20:45:01 MK-Soft-VM6 sshd[14729]: Failed password for root from 81.134.41.100 port 46372 ssh2
...
2019-11-16 03:51:19
104.248.187.179 attackspam
Brute-force attempt banned
2019-11-16 04:00:47
211.152.156.58 attackbots
ICMP MH Probe, Scan /Distributed -
2019-11-16 04:10:14
101.109.253.59 attackbots
MultiHost/MultiPort Probe, Scan, Hack -
2019-11-16 04:01:06
219.143.126.175 attackspam
ICMP MH Probe, Scan /Distributed -
2019-11-16 03:39:31
178.130.34.53 attackspambots
3389BruteforceFW21
2019-11-16 04:07:03

Recently Reported IPs

104.21.12.49 104.21.12.59 104.21.12.54 104.21.12.6
104.21.12.55 104.21.12.57 104.21.12.7 104.21.12.62
104.21.12.72 104.21.12.86 104.21.12.90 104.21.12.89
104.21.67.212 104.21.12.99 104.21.12.92 104.21.12.98
104.21.12.93 104.21.12.97 104.21.13.106 104.21.13.101