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
Mar 17 06:37:35 l03 sshd[32251]: Invalid user xhchen from 139.155.50.40 port 37016
...
2020-03-17 15:59:53
attackbots
Invalid user trung from 139.155.50.40 port 40006
2020-03-12 08:04:57
attack
Feb 21 05:57:30 localhost sshd\[19932\]: Invalid user daniel from 139.155.50.40
Feb 21 05:57:30 localhost sshd\[19932\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=139.155.50.40
Feb 21 05:57:32 localhost sshd\[19932\]: Failed password for invalid user daniel from 139.155.50.40 port 47252 ssh2
Feb 21 05:59:32 localhost sshd\[19963\]: Invalid user git from 139.155.50.40
Feb 21 05:59:32 localhost sshd\[19963\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=139.155.50.40
...
2020-02-21 13:09:07
attackspam
Feb  3 08:33:28 silence02 sshd[2745]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=139.155.50.40
Feb  3 08:33:30 silence02 sshd[2745]: Failed password for invalid user 12qwaszx from 139.155.50.40 port 54248 ssh2
Feb  3 08:36:18 silence02 sshd[2918]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=139.155.50.40
2020-02-03 15:46:44
attack
Unauthorized connection attempt detected from IP address 139.155.50.40 to port 2220 [J]
2020-02-02 19:29:29
attack
Jan  1 07:29:46 MK-Soft-VM7 sshd[10618]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=139.155.50.40 
Jan  1 07:29:48 MK-Soft-VM7 sshd[10618]: Failed password for invalid user vcsa from 139.155.50.40 port 55266 ssh2
...
2020-01-01 14:51:31
attackspam
Dec 25 17:12:31 163-172-32-151 sshd[6051]: Invalid user up from 139.155.50.40 port 49408
...
2019-12-26 00:30:22
attack
Dec 12 14:57:25 lnxmysql61 sshd[437]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=139.155.50.40
2019-12-12 21:58:18
attackspam
Lines containing failures of 139.155.50.40
Dec  2 19:52:12 shared10 sshd[19989]: Invalid user larine from 139.155.50.40 port 43908
Dec  2 19:52:12 shared10 sshd[19989]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=139.155.50.40
Dec  2 19:52:14 shared10 sshd[19989]: Failed password for invalid user larine from 139.155.50.40 port 43908 ssh2
Dec  2 19:52:14 shared10 sshd[19989]: Received disconnect from 139.155.50.40 port 43908:11: Bye Bye [preauth]
Dec  2 19:52:14 shared10 sshd[19989]: Disconnected from invalid user larine 139.155.50.40 port 43908 [preauth]


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=139.155.50.40
2019-12-05 03:39:57
attack
Dec  4 12:19:06 herz-der-gamer sshd[16666]: Invalid user loan from 139.155.50.40 port 55398
Dec  4 12:19:06 herz-der-gamer sshd[16666]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=139.155.50.40
Dec  4 12:19:06 herz-der-gamer sshd[16666]: Invalid user loan from 139.155.50.40 port 55398
Dec  4 12:19:08 herz-der-gamer sshd[16666]: Failed password for invalid user loan from 139.155.50.40 port 55398 ssh2
...
2019-12-04 21:29:48
Comments on same subnet:
No discussion about this subnet yet..
Whois info:
b
Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 139.155.50.40
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 13928
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

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

;; AUTHORITY SECTION:
.			446	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2019120401 1800 900 604800 86400

;; Query time: 110 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Wed Dec 04 21:29:42 CST 2019
;; MSG SIZE  rcvd: 117
Host info
Host 40.50.155.139.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
** server can't find 40.50.155.139.in-addr.arpa: NXDOMAIN

Related IP info:
Related comments:
IP Type Details Datetime
94.23.212.137 attackspam
2020-04-20T19:15:47.128970randservbullet-proofcloud-66.localdomain sshd[18662]: Invalid user le from 94.23.212.137 port 53003
2020-04-20T19:15:47.133810randservbullet-proofcloud-66.localdomain sshd[18662]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=d1.ajeel.be
2020-04-20T19:15:47.128970randservbullet-proofcloud-66.localdomain sshd[18662]: Invalid user le from 94.23.212.137 port 53003
2020-04-20T19:15:49.593759randservbullet-proofcloud-66.localdomain sshd[18662]: Failed password for invalid user le from 94.23.212.137 port 53003 ssh2
...
2020-04-21 03:40:15
116.196.82.80 attackbotsspam
$f2bV_matches
2020-04-21 03:25:52
60.164.251.217 attack
Apr 20 19:36:58 localhost sshd[75885]: Invalid user wg from 60.164.251.217 port 46540
Apr 20 19:36:58 localhost sshd[75885]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=60.164.251.217
Apr 20 19:36:58 localhost sshd[75885]: Invalid user wg from 60.164.251.217 port 46540
Apr 20 19:37:01 localhost sshd[75885]: Failed password for invalid user wg from 60.164.251.217 port 46540 ssh2
Apr 20 19:41:58 localhost sshd[76302]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=60.164.251.217  user=root
Apr 20 19:42:00 localhost sshd[76302]: Failed password for root from 60.164.251.217 port 47915 ssh2
...
2020-04-21 03:44:50
140.143.58.46 attack
Apr 20 17:52:56 124388 sshd[4980]: Failed password for root from 140.143.58.46 port 54356 ssh2
Apr 20 17:56:54 124388 sshd[5109]: Invalid user tester from 140.143.58.46 port 58196
Apr 20 17:56:54 124388 sshd[5109]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=140.143.58.46
Apr 20 17:56:54 124388 sshd[5109]: Invalid user tester from 140.143.58.46 port 58196
Apr 20 17:56:56 124388 sshd[5109]: Failed password for invalid user tester from 140.143.58.46 port 58196 ssh2
2020-04-21 03:14:14
123.16.146.97 attackspambots
Invalid user admin from 123.16.146.97 port 47691
2020-04-21 03:22:18
84.58.203.118 attackbots
Invalid user ju from 84.58.203.118 port 35282
2020-04-21 03:42:07
89.248.174.151 attackspambots
Invalid user admin from 89.248.174.151 port 38114
2020-04-21 03:40:38
106.13.104.8 attackbots
Apr 20 16:01:37 server sshd[19518]: Failed password for root from 106.13.104.8 port 59874 ssh2
Apr 20 16:07:11 server sshd[23360]: Failed password for root from 106.13.104.8 port 33458 ssh2
Apr 20 16:12:34 server sshd[27270]: Failed password for invalid user admin from 106.13.104.8 port 59472 ssh2
2020-04-21 03:33:10
156.213.132.68 attackbots
Invalid user admin from 156.213.132.68 port 57601
2020-04-21 03:10:07
109.87.115.220 attackspambots
SSH invalid-user multiple login attempts
2020-04-21 03:30:59
111.231.59.112 attackspam
Invalid user gituser from 111.231.59.112 port 43670
2020-04-21 03:28:24
167.114.144.96 attackspam
$f2bV_matches
2020-04-21 03:07:50
111.59.100.243 attackspambots
prod3
...
2020-04-21 03:28:56
149.56.26.16 attack
Apr 20 18:22:20 host5 sshd[7577]: Invalid user jo from 149.56.26.16 port 38248
...
2020-04-21 03:12:15
54.38.241.171 attackspam
$f2bV_matches
2020-04-21 03:45:18

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