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 <<>> 104.18.16.21
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 54622
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.18.16.21.			IN	A

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

;; Query time: 70 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 01:46:28 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 21.16.18.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 21.16.18.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
150.223.17.130 attack
Feb  8 19:21:56 web9 sshd\[23444\]: Invalid user psr from 150.223.17.130
Feb  8 19:21:56 web9 sshd\[23444\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=150.223.17.130
Feb  8 19:21:58 web9 sshd\[23444\]: Failed password for invalid user psr from 150.223.17.130 port 50826 ssh2
Feb  8 19:23:32 web9 sshd\[23632\]: Invalid user fog from 150.223.17.130
Feb  8 19:23:32 web9 sshd\[23632\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=150.223.17.130
2020-02-09 13:28:20
51.38.236.221 attack
Feb  9 05:55:31 h1745522 sshd[21811]: Invalid user vuw from 51.38.236.221 port 49502
Feb  9 05:55:31 h1745522 sshd[21811]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.38.236.221
Feb  9 05:55:31 h1745522 sshd[21811]: Invalid user vuw from 51.38.236.221 port 49502
Feb  9 05:55:33 h1745522 sshd[21811]: Failed password for invalid user vuw from 51.38.236.221 port 49502 ssh2
Feb  9 05:56:57 h1745522 sshd[21892]: Invalid user lzb from 51.38.236.221 port 34750
Feb  9 05:56:57 h1745522 sshd[21892]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.38.236.221
Feb  9 05:56:57 h1745522 sshd[21892]: Invalid user lzb from 51.38.236.221 port 34750
Feb  9 05:57:00 h1745522 sshd[21892]: Failed password for invalid user lzb from 51.38.236.221 port 34750 ssh2
Feb  9 05:58:27 h1745522 sshd[22027]: Invalid user glu from 51.38.236.221 port 48188
...
2020-02-09 13:34:31
140.143.206.137 attack
Feb  9 06:54:18 lukav-desktop sshd\[7071\]: Invalid user zvn from 140.143.206.137
Feb  9 06:54:18 lukav-desktop sshd\[7071\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.143.206.137
Feb  9 06:54:20 lukav-desktop sshd\[7071\]: Failed password for invalid user zvn from 140.143.206.137 port 42672 ssh2
Feb  9 06:58:11 lukav-desktop sshd\[7894\]: Invalid user kic from 140.143.206.137
Feb  9 06:58:11 lukav-desktop sshd\[7894\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.143.206.137
2020-02-09 13:46:43
45.55.193.62 attack
5x Failed Password
2020-02-09 13:42:03
177.55.165.2 attack
unauthorized connection attempt
2020-02-09 13:58:25
186.122.147.189 attack
Feb  9 10:28:15 areeb-Workstation sshd[3915]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=186.122.147.189 
Feb  9 10:28:18 areeb-Workstation sshd[3915]: Failed password for invalid user jnh from 186.122.147.189 port 38710 ssh2
...
2020-02-09 13:42:27
138.185.56.166 attack
IP was detected trying to Brute-Force SSH, FTP, Web Apps, Port-Scan or Hacking.
2020-02-09 14:01:28
222.186.52.139 attackbotsspam
Feb  9 06:24:11 dcd-gentoo sshd[8829]: User root from 222.186.52.139 not allowed because none of user's groups are listed in AllowGroups
Feb  9 06:24:14 dcd-gentoo sshd[8829]: error: PAM: Authentication failure for illegal user root from 222.186.52.139
Feb  9 06:24:11 dcd-gentoo sshd[8829]: User root from 222.186.52.139 not allowed because none of user's groups are listed in AllowGroups
Feb  9 06:24:14 dcd-gentoo sshd[8829]: error: PAM: Authentication failure for illegal user root from 222.186.52.139
Feb  9 06:24:11 dcd-gentoo sshd[8829]: User root from 222.186.52.139 not allowed because none of user's groups are listed in AllowGroups
Feb  9 06:24:14 dcd-gentoo sshd[8829]: error: PAM: Authentication failure for illegal user root from 222.186.52.139
Feb  9 06:24:14 dcd-gentoo sshd[8829]: Failed keyboard-interactive/pam for invalid user root from 222.186.52.139 port 18619 ssh2
...
2020-02-09 13:24:47
222.80.196.16 attackbots
Feb  9 06:56:05 site1 sshd\[56851\]: Invalid user fax from 222.80.196.16Feb  9 06:56:08 site1 sshd\[56851\]: Failed password for invalid user fax from 222.80.196.16 port 51020 ssh2Feb  9 06:58:19 site1 sshd\[56879\]: Failed password for games from 222.80.196.16 port 55174 ssh2Feb  9 06:58:24 site1 sshd\[56883\]: Invalid user phpmyadmin from 222.80.196.16Feb  9 06:58:26 site1 sshd\[56883\]: Failed password for invalid user phpmyadmin from 222.80.196.16 port 55406 ssh2Feb  9 06:58:30 site1 sshd\[56889\]: Invalid user tecmin from 222.80.196.16
...
2020-02-09 13:30:25
37.49.226.49 attackbotsspam
unauthorized connection attempt
2020-02-09 13:44:01
218.92.0.165 attackspam
Feb  9 06:07:30 silence02 sshd[29853]: Failed password for root from 218.92.0.165 port 28944 ssh2
Feb  9 06:07:42 silence02 sshd[29853]: error: maximum authentication attempts exceeded for root from 218.92.0.165 port 28944 ssh2 [preauth]
Feb  9 06:07:47 silence02 sshd[29862]: Failed password for root from 218.92.0.165 port 62465 ssh2
2020-02-09 13:27:59
222.254.27.137 attackspam
2020-02-0905:57:301j0eev-0002mZ-8V\<=verena@rs-solution.chH=\(localhost\)[183.89.214.56]:37629P=esmtpsaX=TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256CV=noA=dovecot_login:verena@rs-solution.chS=2071id=FAFF491A11C5EB588481C87084503F5D@rs-solution.chT="apleasantsurprise"forrortizhd@yahoo.com2020-02-0905:57:121j0eed-0002aF-Vw\<=verena@rs-solution.chH=\(localhost\)[113.173.215.118]:54471P=esmtpsaX=TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256CV=noA=dovecot_login:verena@rs-solution.chS=2140id=787DCB98934769DA06034AF206A62021@rs-solution.chT="apleasantsurprise"fornathanalomari@gmail.com2020-02-0905:58:101j0efZ-0002nm-4E\<=verena@rs-solution.chH=\(localhost\)[222.254.27.137]:53640P=esmtpsaX=TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256CV=noA=dovecot_login:verena@rs-solution.chS=2249id=787DCB98934769DA06034AF206A62021@rs-solution.chT="areyoulonelytoo\?"forputtusangapura@gmail.com2020-02-0905:56:451j0eeB-0002Yx-Qf\<=verena@rs-solution.chH=\(localhost\)[156.210.19.76]:45875P=esmtpsaX=TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256CV=noA=d
2020-02-09 13:45:53
178.128.216.127 attackspambots
Feb  9 06:13:17 MK-Soft-VM7 sshd[30659]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=178.128.216.127 
Feb  9 06:13:18 MK-Soft-VM7 sshd[30659]: Failed password for invalid user ozr from 178.128.216.127 port 50834 ssh2
...
2020-02-09 13:36:12
5.89.64.166 attackspambots
Feb  9 06:40:44 silence02 sshd[31870]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.89.64.166
Feb  9 06:40:46 silence02 sshd[31870]: Failed password for invalid user khy from 5.89.64.166 port 51619 ssh2
Feb  9 06:43:53 silence02 sshd[32021]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.89.64.166
2020-02-09 13:54:37
83.6.15.170 attackbots
Feb  9 05:44:05 kmh-mb-001 sshd[32556]: Invalid user vnq from 83.6.15.170 port 53866
Feb  9 05:44:05 kmh-mb-001 sshd[32556]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=83.6.15.170
Feb  9 05:44:07 kmh-mb-001 sshd[32556]: Failed password for invalid user vnq from 83.6.15.170 port 53866 ssh2
Feb  9 05:44:07 kmh-mb-001 sshd[32556]: Received disconnect from 83.6.15.170 port 53866:11: Bye Bye [preauth]
Feb  9 05:44:07 kmh-mb-001 sshd[32556]: Disconnected from 83.6.15.170 port 53866 [preauth]
Feb  9 05:54:51 kmh-mb-001 sshd[1539]: Invalid user lyi from 83.6.15.170 port 51074
Feb  9 05:54:51 kmh-mb-001 sshd[1539]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=83.6.15.170
Feb  9 05:54:52 kmh-mb-001 sshd[1539]: Failed password for invalid user lyi from 83.6.15.170 port 51074 ssh2
Feb  9 05:54:52 kmh-mb-001 sshd[1539]: Received disconnect from 83.6.15.170 port 51074:11: Bye Bye [preauth]
Feb  9 ........
-------------------------------
2020-02-09 13:57:52

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