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:
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Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 104.21.51.42
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 6544
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.51.42.			IN	A

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

;; Query time: 18 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Thu Feb 17 23:42:50 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 42.51.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 42.51.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
129.226.179.187 attackbots
Apr 22 06:06:58 firewall sshd[16380]: Invalid user testing from 129.226.179.187
Apr 22 06:07:00 firewall sshd[16380]: Failed password for invalid user testing from 129.226.179.187 port 33654 ssh2
Apr 22 06:12:06 firewall sshd[16574]: Invalid user fv from 129.226.179.187
...
2020-04-22 18:53:27
189.47.214.28 attackspambots
prod8
...
2020-04-22 18:48:26
138.197.89.186 attack
Apr 22 11:44:20 ns382633 sshd\[30864\]: Invalid user ph from 138.197.89.186 port 49632
Apr 22 11:44:20 ns382633 sshd\[30864\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.197.89.186
Apr 22 11:44:23 ns382633 sshd\[30864\]: Failed password for invalid user ph from 138.197.89.186 port 49632 ssh2
Apr 22 11:56:56 ns382633 sshd\[1045\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.197.89.186  user=root
Apr 22 11:56:58 ns382633 sshd\[1045\]: Failed password for root from 138.197.89.186 port 50218 ssh2
2020-04-22 19:07:16
41.65.68.70 attackbots
Apr 22 05:48:32 debian-2gb-nbg1-2 kernel: \[9786267.723318\] \[UFW BLOCK\] IN=eth0 OUT= MAC=96:00:00:0e:18:f4:d2:74:7f:6e:37:e3:08:00 SRC=41.65.68.70 DST=195.201.40.59 LEN=44 TOS=0x08 PREC=0x00 TTL=239 ID=60704 PROTO=TCP SPT=49289 DPT=1433 WINDOW=1024 RES=0x00 SYN URGP=0
2020-04-22 18:46:19
111.226.232.55 attackbots
Scanning
2020-04-22 18:37:15
122.51.167.63 attackspam
Found by fail2ban
2020-04-22 18:45:16
139.59.169.37 attackspam
Apr 22 12:38:08 mail sshd[2113]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=139.59.169.37
Apr 22 12:38:10 mail sshd[2113]: Failed password for invalid user colord from 139.59.169.37 port 57534 ssh2
Apr 22 12:45:39 mail sshd[3374]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=139.59.169.37
2020-04-22 18:47:09
176.31.162.82 attack
Invalid user admin from 176.31.162.82 port 50142
2020-04-22 19:05:36
181.63.248.149 attack
Apr 22 11:11:16 vps58358 sshd\[28098\]: Invalid user uj from 181.63.248.149Apr 22 11:11:17 vps58358 sshd\[28098\]: Failed password for invalid user uj from 181.63.248.149 port 42305 ssh2Apr 22 11:15:25 vps58358 sshd\[28147\]: Invalid user test from 181.63.248.149Apr 22 11:15:27 vps58358 sshd\[28147\]: Failed password for invalid user test from 181.63.248.149 port 44109 ssh2Apr 22 11:19:35 vps58358 sshd\[28183\]: Invalid user ov from 181.63.248.149Apr 22 11:19:37 vps58358 sshd\[28183\]: Failed password for invalid user ov from 181.63.248.149 port 45906 ssh2
...
2020-04-22 18:44:49
88.247.219.87 attackspam
Unauthorized connection attempt detected from IP address 88.247.219.87 to port 81
2020-04-22 19:06:52
103.254.198.67 attack
odoo8
...
2020-04-22 18:34:22
103.71.231.147 attack
Email spam message
2020-04-22 18:24:48
178.128.183.90 attackbots
Apr 22 12:48:34 minden010 sshd[28934]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=178.128.183.90
Apr 22 12:48:36 minden010 sshd[28934]: Failed password for invalid user gitlab from 178.128.183.90 port 43804 ssh2
Apr 22 12:52:21 minden010 sshd[30119]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=178.128.183.90
...
2020-04-22 18:53:04
167.89.123.54 attackbots
Sendgrid Domain is responsible for close to 50% of our phishing campaigns... This isn't right
2020-04-22 18:36:14
45.143.220.54 attack
Fail2Ban Ban Triggered
2020-04-22 19:00:04

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