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 Kingdom of Great Britain and Northern Ireland (the)

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 <<>> 138.251.21.42
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 51346
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;138.251.21.42.			IN	A

;; AUTHORITY SECTION:
.			30	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2025012600 1800 900 604800 86400

;; Query time: 11 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Sun Jan 26 19:36:41 CST 2025
;; MSG SIZE  rcvd: 106
Host info
Host 42.21.251.138.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 42.21.251.138.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
163.172.251.80 attackbots
Brute-force attempt banned
2020-05-04 13:47:50
103.43.186.34 attack
May  4 06:50:05 OPSO sshd\[30970\]: Invalid user yasin from 103.43.186.34 port 2387
May  4 06:50:05 OPSO sshd\[30970\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=103.43.186.34
May  4 06:50:08 OPSO sshd\[30970\]: Failed password for invalid user yasin from 103.43.186.34 port 2387 ssh2
May  4 06:59:28 OPSO sshd\[378\]: Invalid user toor from 103.43.186.34 port 2390
May  4 06:59:28 OPSO sshd\[378\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=103.43.186.34
2020-05-04 13:57:33
104.236.228.46 attack
May  4 05:48:18 DAAP sshd[12777]: Invalid user shashank from 104.236.228.46 port 41752
May  4 05:48:18 DAAP sshd[12777]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=104.236.228.46
May  4 05:48:18 DAAP sshd[12777]: Invalid user shashank from 104.236.228.46 port 41752
May  4 05:48:19 DAAP sshd[12777]: Failed password for invalid user shashank from 104.236.228.46 port 41752 ssh2
May  4 05:56:47 DAAP sshd[12906]: Invalid user administrator from 104.236.228.46 port 57338
...
2020-05-04 14:01:53
156.96.105.48 attack
May  4 06:58:24 melroy-server sshd[981]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=156.96.105.48 
May  4 06:58:26 melroy-server sshd[981]: Failed password for invalid user ftpuser from 156.96.105.48 port 53434 ssh2
...
2020-05-04 13:48:09
185.216.140.252 attackspambots
Port scan: Attack repeated for 24 hours
2020-05-04 13:49:13
51.68.174.177 attackspam
SSH Brute-Force reported by Fail2Ban
2020-05-04 13:56:59
167.71.175.204 attackspam
Automatic report - XMLRPC Attack
2020-05-04 13:53:16
128.199.85.251 attackbotsspam
May  3 19:43:22 web1 sshd\[20736\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=128.199.85.251  user=root
May  3 19:43:24 web1 sshd\[20736\]: Failed password for root from 128.199.85.251 port 49594 ssh2
May  3 19:47:35 web1 sshd\[21147\]: Invalid user lrj from 128.199.85.251
May  3 19:47:35 web1 sshd\[21147\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=128.199.85.251
May  3 19:47:37 web1 sshd\[21147\]: Failed password for invalid user lrj from 128.199.85.251 port 55344 ssh2
2020-05-04 13:56:17
70.51.195.46 attackbots
May  4 11:05:17 itv-usvr-02 sshd[25857]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=70.51.195.46  user=root
May  4 11:05:19 itv-usvr-02 sshd[25857]: Failed password for root from 70.51.195.46 port 39454 ssh2
May  4 11:10:32 itv-usvr-02 sshd[26153]: Invalid user csaba from 70.51.195.46 port 51626
May  4 11:10:32 itv-usvr-02 sshd[26153]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=70.51.195.46
May  4 11:10:32 itv-usvr-02 sshd[26153]: Invalid user csaba from 70.51.195.46 port 51626
May  4 11:10:34 itv-usvr-02 sshd[26153]: Failed password for invalid user csaba from 70.51.195.46 port 51626 ssh2
2020-05-04 14:11:13
54.38.187.126 attack
2020-05-04T05:50:54.587001amanda2.illicoweb.com sshd\[19787\]: Invalid user yiyuan from 54.38.187.126 port 43116
2020-05-04T05:50:54.592499amanda2.illicoweb.com sshd\[19787\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=126.ip-54-38-187.eu
2020-05-04T05:50:56.500618amanda2.illicoweb.com sshd\[19787\]: Failed password for invalid user yiyuan from 54.38.187.126 port 43116 ssh2
2020-05-04T05:56:20.807870amanda2.illicoweb.com sshd\[20007\]: Invalid user user1 from 54.38.187.126 port 37546
2020-05-04T05:56:20.814144amanda2.illicoweb.com sshd\[20007\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=126.ip-54-38-187.eu
...
2020-05-04 14:26:10
114.33.90.172 attackspambots
Port probing on unauthorized port 23
2020-05-04 14:13:03
54.39.85.200 attack
From camile.campos.4654159-compras=marcoslimaimoveis.com.br@planmelhoraqui.we.bs Mon May 04 00:56:36 2020
Received: from poscot-mx-1.planmelhoraqui.we.bs ([54.39.85.200]:35352)
2020-05-04 14:10:29
68.183.35.255 attackbotsspam
May  4 07:57:58 meumeu sshd[5027]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=68.183.35.255 
May  4 07:58:00 meumeu sshd[5027]: Failed password for invalid user hand from 68.183.35.255 port 60454 ssh2
May  4 08:01:45 meumeu sshd[5950]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=68.183.35.255 
...
2020-05-04 14:20:46
89.238.154.169 attack
(cpanel) Failed cPanel login from 89.238.154.169 (GB/United Kingdom/-): 5 in the last 3600 secs
2020-05-04 14:21:54
81.182.9.98 attackbots
Unauthorized connection attempt detected from IP address 81.182.9.98 to port 8080
2020-05-04 14:20:33

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