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 <<>> 104.21.40.51
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 16951
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.40.51.			IN	A

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

;; Query time: 170 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:28:50 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 51.40.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 51.40.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
80.82.64.127 attackspambots
Dec 20 21:19:44 h2177944 kernel: \[71999.803087\] \[UFW BLOCK\] IN=venet0 OUT= MAC= SRC=80.82.64.127 DST=85.214.117.9 LEN=40 TOS=0x00 PREC=0x00 TTL=250 ID=12472 PROTO=TCP SPT=50516 DPT=3322 WINDOW=1024 RES=0x00 SYN URGP=0 
Dec 20 21:19:44 h2177944 kernel: \[71999.803099\] \[UFW BLOCK\] IN=venet0 OUT= MAC= SRC=80.82.64.127 DST=85.214.117.9 LEN=40 TOS=0x00 PREC=0x00 TTL=250 ID=12472 PROTO=TCP SPT=50516 DPT=3322 WINDOW=1024 RES=0x00 SYN URGP=0 
Dec 20 21:34:31 h2177944 kernel: \[72887.114915\] \[UFW BLOCK\] IN=venet0 OUT= MAC= SRC=80.82.64.127 DST=85.214.117.9 LEN=40 TOS=0x00 PREC=0x00 TTL=250 ID=13808 PROTO=TCP SPT=50516 DPT=3352 WINDOW=1024 RES=0x00 SYN URGP=0 
Dec 20 21:53:26 h2177944 kernel: \[74021.669642\] \[UFW BLOCK\] IN=venet0 OUT= MAC= SRC=80.82.64.127 DST=85.214.117.9 LEN=40 TOS=0x00 PREC=0x00 TTL=250 ID=62943 PROTO=TCP SPT=50516 DPT=3301 WINDOW=1024 RES=0x00 SYN URGP=0 
Dec 20 21:53:26 h2177944 kernel: \[74021.669657\] \[UFW BLOCK\] IN=venet0 OUT= MAC= SRC=80.82.64.127 DST=85.214.117.9 LEN=40 TOS=0x0
2019-12-21 05:11:57
106.12.199.74 attackspambots
Dec 20 10:35:32 wbs sshd\[13815\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.199.74  user=root
Dec 20 10:35:34 wbs sshd\[13815\]: Failed password for root from 106.12.199.74 port 60296 ssh2
Dec 20 10:41:04 wbs sshd\[14474\]: Invalid user ftpuser from 106.12.199.74
Dec 20 10:41:04 wbs sshd\[14474\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.12.199.74
Dec 20 10:41:06 wbs sshd\[14474\]: Failed password for invalid user ftpuser from 106.12.199.74 port 56164 ssh2
2019-12-21 04:53:08
221.130.29.210 attackbots
Dec 20 12:27:01 aragorn sshd[22154]: Invalid user a from 221.130.29.210
Dec 20 12:27:02 aragorn sshd[22152]: Invalid user a from 221.130.29.210
Dec 20 12:27:03 aragorn sshd[22155]: Invalid user a from 221.130.29.210
Dec 20 12:27:03 aragorn sshd[22153]: Invalid user a from 221.130.29.210
...
2019-12-21 05:07:28
167.99.76.243 attackspam
Dec 20 11:01:49 php1 sshd\[27054\]: Invalid user rnunix from 167.99.76.243
Dec 20 11:01:49 php1 sshd\[27054\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=167.99.76.243
Dec 20 11:01:51 php1 sshd\[27054\]: Failed password for invalid user rnunix from 167.99.76.243 port 39526 ssh2
Dec 20 11:11:24 php1 sshd\[28559\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=167.99.76.243  user=root
Dec 20 11:11:27 php1 sshd\[28559\]: Failed password for root from 167.99.76.243 port 60752 ssh2
2019-12-21 05:25:08
103.36.84.100 attack
$f2bV_matches
2019-12-21 05:11:01
51.91.158.136 attack
Dec 20 09:55:19 php1 sshd\[17995\]: Invalid user etable from 51.91.158.136
Dec 20 09:55:19 php1 sshd\[17995\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=136.ip-51-91-158.eu
Dec 20 09:55:21 php1 sshd\[17995\]: Failed password for invalid user etable from 51.91.158.136 port 56886 ssh2
Dec 20 10:02:09 php1 sshd\[18873\]: Invalid user gruszczynski from 51.91.158.136
Dec 20 10:02:09 php1 sshd\[18873\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=136.ip-51-91-158.eu
2019-12-21 05:09:39
104.236.142.200 attack
Invalid user rtingres from 104.236.142.200 port 39690
2019-12-21 05:03:56
91.121.116.65 attack
Dec 20 22:07:36 srv-ubuntu-dev3 sshd[81609]: Invalid user yehudit from 91.121.116.65
Dec 20 22:07:36 srv-ubuntu-dev3 sshd[81609]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=91.121.116.65
Dec 20 22:07:36 srv-ubuntu-dev3 sshd[81609]: Invalid user yehudit from 91.121.116.65
Dec 20 22:07:38 srv-ubuntu-dev3 sshd[81609]: Failed password for invalid user yehudit from 91.121.116.65 port 51174 ssh2
Dec 20 22:12:19 srv-ubuntu-dev3 sshd[82166]: Invalid user cantor from 91.121.116.65
Dec 20 22:12:19 srv-ubuntu-dev3 sshd[82166]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=91.121.116.65
Dec 20 22:12:19 srv-ubuntu-dev3 sshd[82166]: Invalid user cantor from 91.121.116.65
Dec 20 22:12:21 srv-ubuntu-dev3 sshd[82166]: Failed password for invalid user cantor from 91.121.116.65 port 35096 ssh2
Dec 20 22:17:06 srv-ubuntu-dev3 sshd[82542]: Invalid user apache from 91.121.116.65
...
2019-12-21 05:18:15
77.20.107.79 attack
Dec 20 10:53:37 auw2 sshd\[9186\]: Invalid user chen123 from 77.20.107.79
Dec 20 10:53:37 auw2 sshd\[9186\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=ip4d146b4f.dynamic.kabel-deutschland.de
Dec 20 10:53:38 auw2 sshd\[9186\]: Failed password for invalid user chen123 from 77.20.107.79 port 56394 ssh2
Dec 20 10:59:57 auw2 sshd\[9779\]: Invalid user 2w3e4r from 77.20.107.79
Dec 20 10:59:57 auw2 sshd\[9779\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=ip4d146b4f.dynamic.kabel-deutschland.de
2019-12-21 05:22:51
129.204.199.91 attackbotsspam
Invalid user delhi8 from 129.204.199.91 port 50440
2019-12-21 05:02:51
185.176.27.18 attack
Dec 20 22:15:27 debian-2gb-nbg1-2 kernel: \[529288.135935\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=185.176.27.18 DST=195.201.40.59 LEN=40 TOS=0x00 PREC=0x00 TTL=246 ID=10162 PROTO=TCP SPT=53550 DPT=3158 WINDOW=1024 RES=0x00 SYN URGP=0
2019-12-21 05:23:38
142.93.251.1 attackbots
Dec 20 23:50:31 server sshd\[2201\]: Invalid user lisa from 142.93.251.1
Dec 20 23:50:31 server sshd\[2201\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=142.93.251.1 
Dec 20 23:50:34 server sshd\[2201\]: Failed password for invalid user lisa from 142.93.251.1 port 57068 ssh2
Dec 20 23:57:18 server sshd\[3812\]: Invalid user user from 142.93.251.1
Dec 20 23:57:18 server sshd\[3812\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=142.93.251.1 
...
2019-12-21 05:16:24
221.214.51.133 attackspambots
12/20/2019-09:48:47.909228 221.214.51.133 Protocol: 6 ET SCAN Suspicious inbound to MSSQL port 1433
2019-12-21 05:10:09
176.63.154.66 attack
Automatic report - Banned IP Access
2019-12-21 05:24:36
180.76.102.226 attackbotsspam
Dec 20 21:37:05 MK-Soft-VM7 sshd[24985]: Failed password for backup from 180.76.102.226 port 52974 ssh2
...
2019-12-21 04:54:44

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