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: South Korea

Internet Service Provider: unknown

Hostname: unknown

Organization: SK Telecom

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 <<>> 42.21.57.188
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 40721
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;42.21.57.188.			IN	A

;; AUTHORITY SECTION:
.			3600	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2019070900 1800 900 604800 86400

;; Query time: 2 msec
;; SERVER: 67.207.67.2#53(67.207.67.2)
;; WHEN: Tue Jul 09 23:50:25 CST 2019
;; MSG SIZE  rcvd: 116
Host info
Host 188.57.21.42.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		67.207.67.2
Address:	67.207.67.2#53

** server can't find 188.57.21.42.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
40.70.230.213 attackbots
Jul 15 11:53:18 mail sshd\[24472\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=40.70.230.213  user=root
...
2020-07-16 00:46:13
5.119.150.80 attackspambots
Unauthorized connection attempt from IP address 5.119.150.80 on Port 445(SMB)
2020-07-16 01:04:32
13.65.190.193 attackbots
Jul 15 11:51:53 mail sshd\[22509\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=13.65.190.193  user=root
...
2020-07-16 00:42:15
123.207.145.66 attackspam
Jul 15 17:47:14 xeon sshd[7515]: Failed password for invalid user o from 123.207.145.66 port 54916 ssh2
2020-07-16 00:51:22
82.64.125.82 attack
Jul 15 15:42:09 onepixel sshd[1907736]: Invalid user vlsi from 82.64.125.82 port 47702
Jul 15 15:42:09 onepixel sshd[1907736]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=82.64.125.82 
Jul 15 15:42:09 onepixel sshd[1907736]: Invalid user vlsi from 82.64.125.82 port 47702
Jul 15 15:42:11 onepixel sshd[1907736]: Failed password for invalid user vlsi from 82.64.125.82 port 47702 ssh2
Jul 15 15:45:26 onepixel sshd[1909360]: Invalid user admin from 82.64.125.82 port 44048
2020-07-16 00:31:41
113.160.154.86 attack
Unauthorized connection attempt from IP address 113.160.154.86 on Port 445(SMB)
2020-07-16 00:35:51
125.35.92.130 attackbots
fail2ban -- 125.35.92.130
...
2020-07-16 00:39:33
116.24.39.252 attack
Automatic report - Port Scan
2020-07-16 00:58:59
80.218.60.250 attackspam
SSH/22 MH Probe, BF, Hack -
2020-07-16 01:13:30
51.83.74.126 attackspam
2020-07-15T15:02:15.352113ks3355764 sshd[26520]: Invalid user alexander from 51.83.74.126 port 44190
2020-07-15T15:02:17.211423ks3355764 sshd[26520]: Failed password for invalid user alexander from 51.83.74.126 port 44190 ssh2
...
2020-07-16 01:06:07
40.124.15.44 attack
Jul 14 06:55:10 josie sshd[27263]: Invalid user jabarchives.com from 40.124.15.44
Jul 14 06:55:10 josie sshd[27262]: Invalid user jabarchives from 40.124.15.44
Jul 14 06:55:10 josie sshd[27266]: Invalid user admin from 40.124.15.44
Jul 14 06:55:10 josie sshd[27263]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=40.124.15.44 
Jul 14 06:55:10 josie sshd[27264]: Invalid user jabarchives from 40.124.15.44
Jul 14 06:55:10 josie sshd[27262]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=40.124.15.44 
Jul 14 06:55:10 josie sshd[27269]: Invalid user admin from 40.124.15.44
Jul 14 06:55:10 josie sshd[27268]: Invalid user jabarchives.com from 40.124.15.44
Jul 14 06:55:10 josie sshd[27266]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=40.124.15.44 
Jul 14 06:55:10 josie sshd[27264]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh........
-------------------------------
2020-07-16 00:59:59
200.53.28.159 attackspam
[Wed Jul 15 20:02:12.264266 2020] [:error] [pid 5220:tid 139867989821184] [client 200.53.28.159:41299] [client 200.53.28.159] ModSecurity: Access denied with code 403 (phase 2). Pattern match "^[\\\\d.:]+$" at REQUEST_HEADERS:Host. [file "/etc/modsecurity/owasp-modsecurity-crs-3.2.0/rules/REQUEST-920-PROTOCOL-ENFORCEMENT.conf"] [line "696"] [id "920350"] [msg "Host header is a numeric IP address"] [data "103.27.207.197:80"] [severity "WARNING"] [ver "OWASP_CRS/3.2.0"] [tag "application-multi"] [tag "language-multi"] [tag "platform-multi"] [tag "attack-protocol"] [tag "OWASP_CRS"] [tag "OWASP_CRS/PROTOCOL_VIOLATION/IP_HOST"] [tag "WASCTC/WASC-21"] [tag "OWASP_TOP_10/A7"] [tag "PCI/6.5.10"] [hostname "103.27.207.197"] [uri "/"] [unique_id "Xw7@VDW4S1yBycN-l@bhLwAAAqM"]
...
2020-07-16 01:14:52
182.253.250.226 attackbotsspam
1594818133 - 07/15/2020 15:02:13 Host: 182.253.250.226/182.253.250.226 Port: 445 TCP Blocked
2020-07-16 01:15:24
193.112.4.12 attackbotsspam
$f2bV_matches
2020-07-16 01:04:51
52.255.206.134 attackbotsspam
Jul 14 12:51:02 dax sshd[20292]: Invalid user crevis.com from 52.255.206.134
Jul 14 12:51:02 dax sshd[20289]: Invalid user crevis.com from 52.255.206.134
Jul 14 12:51:02 dax sshd[20293]: Invalid user admin from 52.255.206.134
Jul 14 12:51:02 dax sshd[20294]: Invalid user admin from 52.255.206.134
Jul 14 12:51:02 dax sshd[20289]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=52.255.206.134 
Jul 14 12:51:02 dax sshd[20293]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=52.255.206.134 
Jul 14 12:51:02 dax sshd[20290]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=52.255.206.134  user=r.r
Jul 14 12:51:02 dax sshd[20291]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=52.255.206.134  user=r.r
Jul 14 12:51:02 dax sshd[20294]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost........
-------------------------------
2020-07-16 00:52:22

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