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 <<>> 104.21.55.172
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 44798
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.55.172.			IN	A

;; AUTHORITY SECTION:
.			600	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022021701 1800 900 604800 86400

;; Query time: 58 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:37:13 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 172.55.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 172.55.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
185.143.73.93 attackbots
Jul  4 03:28:15 srv01 postfix/smtpd\[14888\]: warning: unknown\[185.143.73.93\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jul  4 03:28:53 srv01 postfix/smtpd\[14888\]: warning: unknown\[185.143.73.93\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jul  4 03:29:29 srv01 postfix/smtpd\[8046\]: warning: unknown\[185.143.73.93\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jul  4 03:30:10 srv01 postfix/smtpd\[21836\]: warning: unknown\[185.143.73.93\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jul  4 03:30:48 srv01 postfix/smtpd\[21836\]: warning: unknown\[185.143.73.93\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...
2020-07-04 09:34:24
51.38.70.175 attack
2020-07-04T00:49:37.900186shield sshd\[6126\]: Invalid user stefan from 51.38.70.175 port 49284
2020-07-04T00:49:37.904287shield sshd\[6126\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=175.ip-51-38-70.eu
2020-07-04T00:49:40.389466shield sshd\[6126\]: Failed password for invalid user stefan from 51.38.70.175 port 49284 ssh2
2020-07-04T00:52:44.894940shield sshd\[6758\]: Invalid user krish from 51.38.70.175 port 47006
2020-07-04T00:52:44.899085shield sshd\[6758\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=175.ip-51-38-70.eu
2020-07-04 09:25:02
178.62.9.122 attackbotsspam
178.62.9.122 - - [04/Jul/2020:03:42:38 +0200] "GET /wp-login.php HTTP/1.1" 200 5990 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
178.62.9.122 - - [04/Jul/2020:03:42:40 +0200] "POST /wp-login.php HTTP/1.1" 200 6220 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
178.62.9.122 - - [04/Jul/2020:03:42:40 +0200] "POST /xmlrpc.php HTTP/1.1" 200 427 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0"
2020-07-04 09:44:55
61.177.172.168 attackbotsspam
Jul  4 03:18:18 server sshd[20619]: Failed none for root from 61.177.172.168 port 27744 ssh2
Jul  4 03:18:21 server sshd[20619]: Failed password for root from 61.177.172.168 port 27744 ssh2
Jul  4 03:18:25 server sshd[20619]: Failed password for root from 61.177.172.168 port 27744 ssh2
2020-07-04 09:21:05
185.143.73.103 attackspam
2020-07-04T03:15:29.489970www postfix/smtpd[11391]: warning: unknown[185.143.73.103]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
2020-07-04T03:16:07.361165www postfix/smtpd[11391]: warning: unknown[185.143.73.103]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
2020-07-04T03:16:47.461351www postfix/smtpd[11391]: warning: unknown[185.143.73.103]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...
2020-07-04 09:17:41
91.121.211.34 attackspambots
Jul  4 02:12:49 ovpn sshd\[27045\]: Invalid user lab2 from 91.121.211.34
Jul  4 02:12:49 ovpn sshd\[27045\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=91.121.211.34
Jul  4 02:12:50 ovpn sshd\[27045\]: Failed password for invalid user lab2 from 91.121.211.34 port 47284 ssh2
Jul  4 02:23:59 ovpn sshd\[29846\]: Invalid user musikbot from 91.121.211.34
Jul  4 02:23:59 ovpn sshd\[29846\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=91.121.211.34
2020-07-04 09:24:39
211.205.95.17 attack
20/7/3@19:16:12: FAIL: Alarm-Network address from=211.205.95.17
20/7/3@19:16:12: FAIL: Alarm-Network address from=211.205.95.17
...
2020-07-04 09:29:31
61.97.235.14 attack
Honeypot attack, port: 81, PTR: PTR record not found
2020-07-04 09:09:51
94.102.51.58 attack
ET CINS Active Threat Intelligence Poor Reputation IP group 86 - port: 55660 proto: TCP cat: Misc Attack
2020-07-04 09:35:08
46.38.150.191 attack
2020-07-04 01:18:25 auth_plain authenticator failed for (User) [46.38.150.191]: 535 Incorrect authentication data (set_id=auth2@mail.csmailer.org)
2020-07-04 01:19:02 auth_plain authenticator failed for (User) [46.38.150.191]: 535 Incorrect authentication data (set_id=1qaz2wsx@mail.csmailer.org)
2020-07-04 01:19:38 auth_plain authenticator failed for (User) [46.38.150.191]: 535 Incorrect authentication data (set_id=c21@mail.csmailer.org)
2020-07-04 01:20:25 auth_plain authenticator failed for (User) [46.38.150.191]: 535 Incorrect authentication data (set_id=margret@mail.csmailer.org)
2020-07-04 01:20:55 auth_plain authenticator failed for (User) [46.38.150.191]: 535 Incorrect authentication data (set_id=pacific@mail.csmailer.org)
...
2020-07-04 09:25:38
185.143.75.81 attackspambots
Jul  4 03:41:08 relay postfix/smtpd\[7430\]: warning: unknown\[185.143.75.81\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jul  4 03:41:34 relay postfix/smtpd\[7441\]: warning: unknown\[185.143.75.81\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jul  4 03:41:57 relay postfix/smtpd\[31347\]: warning: unknown\[185.143.75.81\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jul  4 03:42:25 relay postfix/smtpd\[7187\]: warning: unknown\[185.143.75.81\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jul  4 03:42:50 relay postfix/smtpd\[9386\]: warning: unknown\[185.143.75.81\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...
2020-07-04 09:50:11
46.38.148.22 attack
Jul  4 03:43:37 srv01 postfix/smtpd\[21821\]: warning: unknown\[46.38.148.22\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jul  4 03:43:57 srv01 postfix/smtpd\[14888\]: warning: unknown\[46.38.148.22\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jul  4 03:44:17 srv01 postfix/smtpd\[8046\]: warning: unknown\[46.38.148.22\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jul  4 03:44:39 srv01 postfix/smtpd\[26650\]: warning: unknown\[46.38.148.22\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Jul  4 03:45:00 srv01 postfix/smtpd\[8046\]: warning: unknown\[46.38.148.22\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...
2020-07-04 09:47:50
51.11.138.120 attack
Hacking
2020-07-04 09:45:18
49.204.89.210 attackbots
Honeypot attack, port: 445, PTR: broadband.actcorp.in.
2020-07-04 09:12:31
121.171.166.170 attackspam
2020-07-04T00:34:21.461298abusebot-5.cloudsearch.cf sshd[7403]: Invalid user ramiro from 121.171.166.170 port 59804
2020-07-04T00:34:21.467094abusebot-5.cloudsearch.cf sshd[7403]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=121.171.166.170
2020-07-04T00:34:21.461298abusebot-5.cloudsearch.cf sshd[7403]: Invalid user ramiro from 121.171.166.170 port 59804
2020-07-04T00:34:23.528247abusebot-5.cloudsearch.cf sshd[7403]: Failed password for invalid user ramiro from 121.171.166.170 port 59804 ssh2
2020-07-04T00:38:13.409702abusebot-5.cloudsearch.cf sshd[7459]: Invalid user ghost from 121.171.166.170 port 42986
2020-07-04T00:38:13.416181abusebot-5.cloudsearch.cf sshd[7459]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=121.171.166.170
2020-07-04T00:38:13.409702abusebot-5.cloudsearch.cf sshd[7459]: Invalid user ghost from 121.171.166.170 port 42986
2020-07-04T00:38:15.326908abusebot-5.cloudsearch.cf sshd[7459
...
2020-07-04 09:20:22

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