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: China

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

Hostname: unknown

Organization: unknown

Usage Type: Data Center/Web Hosting/Transit

Comments:
Type Details Datetime
attack
...
2020-02-02 05:16:53
attackbotsspam
Nov 27 11:54:22 vps46666688 sshd[29182]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.143.66.239
Nov 27 11:54:24 vps46666688 sshd[29182]: Failed password for invalid user devil from 140.143.66.239 port 50424 ssh2
...
2019-11-27 23:55:10
attackbots
Nov 17 09:14:50 eventyay sshd[25203]: Failed password for root from 140.143.66.239 port 59254 ssh2
Nov 17 09:21:53 eventyay sshd[25291]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.143.66.239
Nov 17 09:21:55 eventyay sshd[25291]: Failed password for invalid user guest from 140.143.66.239 port 36250 ssh2
...
2019-11-17 16:23:34
attackbotsspam
Nov  4 17:25:04 server sshd\[25431\]: Invalid user uf from 140.143.66.239
Nov  4 17:25:04 server sshd\[25431\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.143.66.239 
Nov  4 17:25:06 server sshd\[25431\]: Failed password for invalid user uf from 140.143.66.239 port 39544 ssh2
Nov  4 17:35:21 server sshd\[28358\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.143.66.239  user=root
Nov  4 17:35:23 server sshd\[28358\]: Failed password for root from 140.143.66.239 port 35986 ssh2
...
2019-11-04 23:26:35
attack
Oct 26 04:42:32 venus sshd\[20663\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.143.66.239  user=root
Oct 26 04:42:35 venus sshd\[20663\]: Failed password for root from 140.143.66.239 port 37438 ssh2
Oct 26 04:47:13 venus sshd\[20709\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.143.66.239  user=root
...
2019-10-26 12:48:37
attackspam
$f2bV_matches
2019-10-24 17:02:31
attack
Oct 17 21:03:43 ip-172-31-62-245 sshd\[8156\]: Invalid user vegas from 140.143.66.239\
Oct 17 21:03:45 ip-172-31-62-245 sshd\[8156\]: Failed password for invalid user vegas from 140.143.66.239 port 40842 ssh2\
Oct 17 21:07:47 ip-172-31-62-245 sshd\[8176\]: Failed password for sshd from 140.143.66.239 port 50084 ssh2\
Oct 17 21:11:44 ip-172-31-62-245 sshd\[8292\]: Invalid user oneadmin from 140.143.66.239\
Oct 17 21:11:46 ip-172-31-62-245 sshd\[8292\]: Failed password for invalid user oneadmin from 140.143.66.239 port 59316 ssh2\
2019-10-18 05:47:06
Comments on same subnet:
No discussion about this subnet yet..
Whois info:
b
Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 140.143.66.239
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 47342
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

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

;; AUTHORITY SECTION:
.			491	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2019101700 1800 900 604800 86400

;; Query time: 108 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Oct 18 05:47:03 CST 2019
;; MSG SIZE  rcvd: 118
Host info
Host 239.66.143.140.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 239.66.143.140.in-addr.arpa: NXDOMAIN
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