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: Syktyvkar

Region: Komi

Country: Russia

Internet Service Provider: OJSC North-West Telecom

Hostname: unknown

Organization: unknown

Usage Type: Fixed Line ISP

Comments:
Type Details Datetime
attack
Lines containing failures of 5.142.51.81
Nov  5 15:32:10 shared10 sshd[32491]: Invalid user admin from 5.142.51.81 port 46714
Nov  5 15:32:10 shared10 sshd[32491]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.142.51.81
Nov  5 15:32:12 shared10 sshd[32491]: Failed password for invalid user admin from 5.142.51.81 port 46714 ssh2


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=5.142.51.81
2019-11-05 22:50:47
Comments on same subnet:
No discussion about this subnet yet..
Whois info:
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Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 5.142.51.81
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 19296
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

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

;; AUTHORITY SECTION:
.			437	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2019110500 1800 900 604800 86400

;; Query time: 70 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Tue Nov 05 22:50:43 CST 2019
;; MSG SIZE  rcvd: 115
Host info
Host 81.51.142.5.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 81.51.142.5.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
157.230.23.46 attackbots
Automatic report - Banned IP Access
2019-08-15 19:10:47
182.162.70.253 attackbotsspam
2019-08-15T11:33:47.120288abusebot-5.cloudsearch.cf sshd\[9553\]: Invalid user kolya from 182.162.70.253 port 54636
2019-08-15 19:37:27
13.67.74.251 attackbotsspam
Automatic report - Banned IP Access
2019-08-15 19:04:53
104.140.210.95 attackbotsspam
104.140.210.95 - - [15/Aug/2019:04:52:45 -0400] "GET /?page=products&action=../../../../../../../../etc/passwd&linkID=10296 HTTP/1.1" 200 17657 "https://faucetsupply.com/?page=products&action=../../../../../../../../etc/passwd&linkID=10296" "Mozilla/5.0 (Windows NT 10.0; WOW64; Rv:50.0) Gecko/20100101 Firefox/50.0"
...
2019-08-15 19:24:00
222.186.30.165 attack
Aug 15 00:57:42 php1 sshd\[27209\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.30.165  user=root
Aug 15 00:57:43 php1 sshd\[27209\]: Failed password for root from 222.186.30.165 port 31316 ssh2
Aug 15 00:57:49 php1 sshd\[27217\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.30.165  user=root
Aug 15 00:57:51 php1 sshd\[27217\]: Failed password for root from 222.186.30.165 port 35708 ssh2
Aug 15 00:57:54 php1 sshd\[27217\]: Failed password for root from 222.186.30.165 port 35708 ssh2
2019-08-15 19:03:52
222.186.42.15 attackspam
2019-08-15T18:17:16.655261enmeeting.mahidol.ac.th sshd\[32540\]: User root from 222.186.42.15 not allowed because not listed in AllowUsers
2019-08-15T18:17:17.023470enmeeting.mahidol.ac.th sshd\[32540\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.42.15  user=root
2019-08-15T18:17:18.702492enmeeting.mahidol.ac.th sshd\[32540\]: Failed password for invalid user root from 222.186.42.15 port 11656 ssh2
...
2019-08-15 19:19:55
108.186.244.37 attackspambots
108.186.244.37 - - [15/Aug/2019:04:52:46 -0400] "GET /?page=products&action=..%2f..%2f..%2f..%2f..%2f..%2f..%2fetc%2fpasswd&linkID=15892 HTTP/1.1" 200 16859 "https://www.newportbrassfaucets.com/?page=products&action=..%2f..%2f..%2f..%2f..%2f..%2f..%2fetc%2fpasswd&linkID=15892" "Mozilla/5.0 (Windows NT 10.0; WOW64; Rv:50.0) Gecko/20100101 Firefox/50.0"
...
2019-08-15 19:19:29
217.182.158.104 attack
Aug 15 11:43:09 mail sshd\[29883\]: Failed password for invalid user master from 217.182.158.104 port 24627 ssh2
Aug 15 12:00:45 mail sshd\[30315\]: Invalid user fabiana from 217.182.158.104 port 33787
Aug 15 12:00:45 mail sshd\[30315\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=217.182.158.104
...
2019-08-15 19:09:48
129.28.88.12 attackspambots
Aug 15 13:14:46 rpi sshd[18431]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=129.28.88.12 
Aug 15 13:14:48 rpi sshd[18431]: Failed password for invalid user ntadmin from 129.28.88.12 port 36664 ssh2
2019-08-15 19:18:37
132.232.1.62 attackbots
Aug 15 00:35:54 tdfoods sshd\[1800\]: Invalid user kf from 132.232.1.62
Aug 15 00:35:54 tdfoods sshd\[1800\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=132.232.1.62
Aug 15 00:35:56 tdfoods sshd\[1800\]: Failed password for invalid user kf from 132.232.1.62 port 37108 ssh2
Aug 15 00:43:15 tdfoods sshd\[2587\]: Invalid user motiur from 132.232.1.62
Aug 15 00:43:15 tdfoods sshd\[2587\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=132.232.1.62
2019-08-15 19:00:59
139.59.90.40 attack
2019-08-15T06:35:59.618292mizuno.rwx.ovh sshd[13693]: Connection from 139.59.90.40 port 42647 on 78.46.61.178 port 22
2019-08-15T06:36:00.638226mizuno.rwx.ovh sshd[13693]: Invalid user vagner from 139.59.90.40 port 42647
2019-08-15T06:36:00.649612mizuno.rwx.ovh sshd[13693]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=139.59.90.40
2019-08-15T06:35:59.618292mizuno.rwx.ovh sshd[13693]: Connection from 139.59.90.40 port 42647 on 78.46.61.178 port 22
2019-08-15T06:36:00.638226mizuno.rwx.ovh sshd[13693]: Invalid user vagner from 139.59.90.40 port 42647
2019-08-15T06:36:02.197497mizuno.rwx.ovh sshd[13693]: Failed password for invalid user vagner from 139.59.90.40 port 42647 ssh2
...
2019-08-15 19:29:08
167.71.70.159 attackspambots
port scan and connect, tcp 23 (telnet)
2019-08-15 19:40:27
96.44.184.6 attack
IMAP brute force
...
2019-08-15 19:33:34
117.48.212.113 attackbots
SSH Brute-Force reported by Fail2Ban
2019-08-15 19:07:23
37.59.54.90 attackspambots
Aug 15 12:10:00 lnxded64 sshd[12357]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=37.59.54.90
2019-08-15 18:53:07

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