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 <<>> 21.51.142.138
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 10464
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;21.51.142.138.			IN	A

;; AUTHORITY SECTION:
.			318	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022012200 1800 900 604800 86400

;; Query time: 119 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Sat Jan 22 16:36:52 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 138.142.51.21.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 138.142.51.21.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
222.186.42.136 attackspambots
Feb  9 02:24:50 marvibiene sshd[53672]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.42.136  user=root
Feb  9 02:24:53 marvibiene sshd[53672]: Failed password for root from 222.186.42.136 port 49455 ssh2
Feb  9 02:24:57 marvibiene sshd[53672]: Failed password for root from 222.186.42.136 port 49455 ssh2
Feb  9 02:24:50 marvibiene sshd[53672]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.42.136  user=root
Feb  9 02:24:53 marvibiene sshd[53672]: Failed password for root from 222.186.42.136 port 49455 ssh2
Feb  9 02:24:57 marvibiene sshd[53672]: Failed password for root from 222.186.42.136 port 49455 ssh2
...
2020-02-09 10:25:48
107.173.34.178 attackbots
Feb  9 02:28:16 lnxmysql61 sshd[13692]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=107.173.34.178
2020-02-09 10:42:55
80.50.54.42 attackbots
1581209115 - 02/09/2020 01:45:15 Host: 80.50.54.42/80.50.54.42 Port: 445 TCP Blocked
2020-02-09 11:02:38
61.160.82.82 attackspam
Feb  9 00:43:09 yesfletchmain sshd\[4238\]: Invalid user uxu from 61.160.82.82 port 15773
Feb  9 00:43:09 yesfletchmain sshd\[4238\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=61.160.82.82
Feb  9 00:43:11 yesfletchmain sshd\[4238\]: Failed password for invalid user uxu from 61.160.82.82 port 15773 ssh2
Feb  9 00:45:40 yesfletchmain sshd\[4270\]: Invalid user lla from 61.160.82.82 port 31896
Feb  9 00:45:40 yesfletchmain sshd\[4270\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=61.160.82.82
...
2020-02-09 10:40:07
145.239.82.11 attackbots
Feb  9 03:44:59 mout sshd[9769]: Invalid user xhe from 145.239.82.11 port 53836
2020-02-09 10:46:53
222.186.30.57 attack
Feb  9 03:25:21 MK-Soft-Root1 sshd[12329]: Failed password for root from 222.186.30.57 port 38581 ssh2
Feb  9 03:25:25 MK-Soft-Root1 sshd[12329]: Failed password for root from 222.186.30.57 port 38581 ssh2
...
2020-02-09 10:28:58
222.186.175.215 attackbotsspam
Feb  9 03:28:25 dedicated sshd[27853]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.175.215  user=root
Feb  9 03:28:27 dedicated sshd[27853]: Failed password for root from 222.186.175.215 port 60634 ssh2
2020-02-09 10:34:03
24.212.110.146 attackbotsspam
Unauthorized connection attempt from IP address 24.212.110.146 on Port 445(SMB)
2020-02-09 10:51:09
185.86.164.108 attack
Automatic report - Banned IP Access
2020-02-09 10:21:54
90.84.244.157 attack
Feb  9 02:25:28 haigwepa sshd[21337]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=90.84.244.157 
Feb  9 02:25:30 haigwepa sshd[21337]: Failed password for invalid user puj from 90.84.244.157 port 59914 ssh2
...
2020-02-09 10:22:18
179.232.1.254 attackbots
Feb  9 01:44:38 novum-srv2 sshd[4708]: Invalid user joh from 179.232.1.254 port 33961
Feb  9 01:44:54 novum-srv2 sshd[4710]: Invalid user joh from 179.232.1.254 port 36863
Feb  9 01:45:41 novum-srv2 sshd[4730]: Invalid user joh from 179.232.1.254 port 43375
...
2020-02-09 10:36:09
173.249.29.236 attackspam
SIPVicious Scanner Detection
2020-02-09 10:36:37
106.13.229.230 attack
Hacking
2020-02-09 10:32:24
222.186.30.35 attackbotsspam
Feb  9 03:49:54 mail sshd\[23069\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.30.35  user=root
Feb  9 03:49:56 mail sshd\[23069\]: Failed password for root from 222.186.30.35 port 33642 ssh2
Feb  9 03:49:58 mail sshd\[23069\]: Failed password for root from 222.186.30.35 port 33642 ssh2
...
2020-02-09 10:51:43
112.85.42.172 attack
Feb  8 23:16:53 server sshd\[21550\]: Failed password for root from 112.85.42.172 port 26097 ssh2
Feb  8 23:16:53 server sshd\[21544\]: Failed password for root from 112.85.42.172 port 7485 ssh2
Feb  9 06:01:22 server sshd\[22174\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=112.85.42.172  user=root
Feb  9 06:01:24 server sshd\[22174\]: Failed password for root from 112.85.42.172 port 1950 ssh2
Feb  9 06:01:27 server sshd\[22174\]: Failed password for root from 112.85.42.172 port 1950 ssh2
...
2020-02-09 11:01:40

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