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: Beijing

Region: Beijing

Country: China

Internet Service Provider: Tencent Cloud Computing (Beijing) Co. Ltd.

Hostname: unknown

Organization: Shenzhen Tencent Computer Systems Company Limited

Usage Type: Data Center/Web Hosting/Transit

Comments:
Type Details Datetime
attackspambots
2020-09-23T19:06:00.482372mail.broermann.family sshd[23458]: Failed password for invalid user nifi from 140.143.121.45 port 33550 ssh2
2020-09-23T19:06:02.472343mail.broermann.family sshd[23466]: Invalid user hadoop from 140.143.121.45 port 33826
2020-09-23T19:06:02.475776mail.broermann.family sshd[23466]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.143.121.45
2020-09-23T19:06:02.472343mail.broermann.family sshd[23466]: Invalid user hadoop from 140.143.121.45 port 33826
2020-09-23T19:06:04.751154mail.broermann.family sshd[23466]: Failed password for invalid user hadoop from 140.143.121.45 port 33826 ssh2
...
2020-09-24 20:00:07
attackspam
2020-09-23T19:06:00.482372mail.broermann.family sshd[23458]: Failed password for invalid user nifi from 140.143.121.45 port 33550 ssh2
2020-09-23T19:06:02.472343mail.broermann.family sshd[23466]: Invalid user hadoop from 140.143.121.45 port 33826
2020-09-23T19:06:02.475776mail.broermann.family sshd[23466]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.143.121.45
2020-09-23T19:06:02.472343mail.broermann.family sshd[23466]: Invalid user hadoop from 140.143.121.45 port 33826
2020-09-23T19:06:04.751154mail.broermann.family sshd[23466]: Failed password for invalid user hadoop from 140.143.121.45 port 33826 ssh2
...
2020-09-24 12:01:31
attack
2020-09-23T19:06:00.482372mail.broermann.family sshd[23458]: Failed password for invalid user nifi from 140.143.121.45 port 33550 ssh2
2020-09-23T19:06:02.472343mail.broermann.family sshd[23466]: Invalid user hadoop from 140.143.121.45 port 33826
2020-09-23T19:06:02.475776mail.broermann.family sshd[23466]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.143.121.45
2020-09-23T19:06:02.472343mail.broermann.family sshd[23466]: Invalid user hadoop from 140.143.121.45 port 33826
2020-09-23T19:06:04.751154mail.broermann.family sshd[23466]: Failed password for invalid user hadoop from 140.143.121.45 port 33826 ssh2
...
2020-09-24 03:29:47
attackspam
none
2020-02-21 13:59:04
attackbotsspam
Dec 24 06:03:36 firewall sshd[9587]: Invalid user odoo from 140.143.121.45
Dec 24 06:03:38 firewall sshd[9587]: Failed password for invalid user odoo from 140.143.121.45 port 35374 ssh2
Dec 24 06:05:22 firewall sshd[9631]: Invalid user migue from 140.143.121.45
...
2019-12-24 17:39:35
attackspambots
Dec  2 14:31:40 ovpn sshd\[3187\]: Invalid user mysql from 140.143.121.45
Dec  2 14:31:40 ovpn sshd\[3187\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.143.121.45
Dec  2 14:31:42 ovpn sshd\[3187\]: Failed password for invalid user mysql from 140.143.121.45 port 53751 ssh2
Dec  2 14:32:19 ovpn sshd\[3358\]: Invalid user admin from 140.143.121.45
Dec  2 14:32:19 ovpn sshd\[3358\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.143.121.45
2019-12-03 02:26:07
attackbots
Nov 29 01:05:37 aragorn sshd[32255]: Invalid user hadoop from 140.143.121.45
Nov 29 01:21:28 aragorn sshd[3046]: Invalid user tomcat from 140.143.121.45
Nov 29 01:21:29 aragorn sshd[3047]: Invalid user tomcat from 140.143.121.45
Nov 29 01:21:30 aragorn sshd[3045]: Invalid user tomcat from 140.143.121.45
...
2019-11-29 19:43:51
Comments on same subnet:
No discussion about this subnet yet..
Whois info:
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Dig info:

; <<>> DiG 9.10.3-P4-Ubuntu <<>> 140.143.121.45
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 34522
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

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

;; AUTHORITY SECTION:
.			3600	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2019053100 1800 900 604800 86400

;; Query time: 2 msec
;; SERVER: 67.207.67.2#53(67.207.67.2)
;; WHEN: Fri May 31 20:24:16 CST 2019
;; MSG SIZE  rcvd: 118

Host info
Host 45.121.143.140.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		67.207.67.2
Address:	67.207.67.2#53

** server can't find 45.121.143.140.in-addr.arpa: NXDOMAIN

Related IP info:
Related comments:
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unauthorized connection attempt
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103.54.219.250 attack
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Unauthorized connection attempt detected from IP address 196.37.111.170 to port 1433 [J]
2020-01-28 16:40:17
49.235.97.238 attack
Jan 27 11:13:06 host sshd[3711]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.235.97.238
Jan 27 11:13:06 host sshd[3711]: Invalid user teamspeak3 from 49.235.97.238 port 43218
Jan 27 11:13:08 host sshd[3711]: Failed password for invalid user teamspeak3 from 49.235.97.238 port 43218 ssh2
...
2020-01-28 16:57:45
86.127.148.14 attack
unauthorized connection attempt
2020-01-28 16:46:30

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