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 <<>> 104.21.51.20
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 33284
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.51.20.			IN	A

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

;; Query time: 55 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:35:14 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 20.51.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 20.51.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
45.35.40.2 attack
*Port Scan* detected from 45.35.40.2 (US/United States/California/Los Angeles (Downtown Los Angeles)/iebee.com). 4 hits in the last 250 seconds
2020-08-03 23:34:10
87.251.74.61 attackbots
Aug  3 16:26:37 debian-2gb-nbg1-2 kernel: \[18723267.841243\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=87.251.74.61 DST=195.201.40.59 LEN=40 TOS=0x00 PREC=0x00 TTL=245 ID=5829 PROTO=TCP SPT=48482 DPT=16702 WINDOW=1024 RES=0x00 SYN URGP=0
2020-08-03 23:22:49
200.169.6.206 attackbotsspam
Aug  3 17:09:55 jane sshd[7747]: Failed password for root from 200.169.6.206 port 53611 ssh2
...
2020-08-03 23:14:41
117.3.46.96 attackbotsspam
20/8/3@08:25:29: FAIL: Alarm-Network address from=117.3.46.96
20/8/3@08:25:30: FAIL: Alarm-Network address from=117.3.46.96
...
2020-08-03 23:11:10
45.35.37.2 attackbotsspam
*Port Scan* detected from 45.35.37.2 (US/United States/California/Los Angeles (Downtown Los Angeles)/iebee.com). 4 hits in the last 295 seconds
2020-08-03 23:38:42
141.98.10.198 attackbots
Triggered by Fail2Ban at Ares web server
2020-08-03 23:14:00
188.0.151.209 attackspam
Aug  3 19:25:43 itv-usvr-02 sshd[20812]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=188.0.151.209  user=root
Aug  3 19:30:21 itv-usvr-02 sshd[20967]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=188.0.151.209  user=root
Aug  3 19:34:51 itv-usvr-02 sshd[21147]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=188.0.151.209  user=root
2020-08-03 23:12:53
50.246.133.188 attack
Aug  3 14:04:37 ns382633 sshd\[17793\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=50.246.133.188  user=root
Aug  3 14:04:39 ns382633 sshd\[17793\]: Failed password for root from 50.246.133.188 port 50438 ssh2
Aug  3 14:17:06 ns382633 sshd\[20417\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=50.246.133.188  user=root
Aug  3 14:17:09 ns382633 sshd\[20417\]: Failed password for root from 50.246.133.188 port 56350 ssh2
Aug  3 14:24:58 ns382633 sshd\[21488\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=50.246.133.188  user=root
2020-08-03 23:40:23
89.155.39.33 attackspambots
Aug  3 15:12:50 sticky sshd\[10275\]: Invalid user Password_100 from 89.155.39.33 port 50012
Aug  3 15:12:50 sticky sshd\[10275\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=89.155.39.33
Aug  3 15:12:52 sticky sshd\[10275\]: Failed password for invalid user Password_100 from 89.155.39.33 port 50012 ssh2
Aug  3 15:17:18 sticky sshd\[10291\]: Invalid user changeme_123 from 89.155.39.33 port 35142
Aug  3 15:17:18 sticky sshd\[10291\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=89.155.39.33
2020-08-03 23:11:41
49.145.227.39 attack
Tried to steal my Steam account
2020-08-03 23:23:05
123.127.198.100 attackbots
Aug  3 16:01:27 fhem-rasp sshd[7132]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=123.127.198.100  user=root
Aug  3 16:01:29 fhem-rasp sshd[7132]: Failed password for root from 123.127.198.100 port 8578 ssh2
...
2020-08-03 23:04:11
104.131.67.23 attackbots
104.131.67.23 - - \[03/Aug/2020:14:25:17 +0200\] "GET / HTTP/1.0" 301 178 "-" "Mozilla/5.0 \(compatible\; NetcraftSurveyAgent/1.0\; +info@netcraft.com\)"
...
2020-08-03 23:18:22
93.174.95.106 attackbots
Aug  3 17:07:57 debian-2gb-nbg1-2 kernel: \[18725747.601092\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=93.174.95.106 DST=195.201.40.59 LEN=44 TOS=0x10 PREC=0x00 TTL=120 ID=41006 PROTO=TCP SPT=28693 DPT=70 WINDOW=25229 RES=0x00 SYN URGP=0
2020-08-03 23:29:33
222.186.180.130 attackbotsspam
Aug  3 17:20:35 amit sshd\[21783\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.180.130  user=root
Aug  3 17:20:38 amit sshd\[21783\]: Failed password for root from 222.186.180.130 port 20379 ssh2
Aug  3 17:20:49 amit sshd\[21785\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.180.130  user=root
...
2020-08-03 23:21:33
120.92.150.145 attackbots
Aug  3 14:25:28 fhem-rasp sshd[30882]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=120.92.150.145  user=root
Aug  3 14:25:29 fhem-rasp sshd[30882]: Failed password for root from 120.92.150.145 port 31642 ssh2
...
2020-08-03 23:10:38

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