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: Brazil

Internet Service Provider: Vivo S.A.

Hostname: unknown

Organization: unknown

Usage Type: unknown

Comments:
Type Details Datetime
attackspam
Sep 26 06:25:53 vpxxxxxxx22308 sshd[13844]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=191.19.55.136  user=r.r
Sep 26 06:25:56 vpxxxxxxx22308 sshd[13844]: Failed password for r.r from 191.19.55.136 port 54400 ssh2
Sep 26 06:25:58 vpxxxxxxx22308 sshd[13844]: Failed password for r.r from 191.19.55.136 port 54400 ssh2
Sep 26 06:26:00 vpxxxxxxx22308 sshd[13844]: Failed password for r.r from 191.19.55.136 port 54400 ssh2
Sep 26 06:26:03 vpxxxxxxx22308 sshd[13844]: Failed password for r.r from 191.19.55.136 port 54400 ssh2
Sep 26 06:26:05 vpxxxxxxx22308 sshd[13844]: Failed password for r.r from 191.19.55.136 port 54400 ssh2
Sep 26 06:26:07 vpxxxxxxx22308 sshd[13844]: Failed password for r.r from 191.19.55.136 port 54400 ssh2

........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=191.19.55.136
2019-09-28 16:35:02
Comments on same subnet:
No discussion about this subnet yet..
Whois info:
b
Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 191.19.55.136
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 36947
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

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

;; AUTHORITY SECTION:
.			377	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2019092800 1800 900 604800 86400

;; Query time: 54 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Sat Sep 28 16:34:55 CST 2019
;; MSG SIZE  rcvd: 117
Host info
136.55.19.191.in-addr.arpa domain name pointer 191-19-55-136.user.vivozap.com.br.
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

Non-authoritative answer:
136.55.19.191.in-addr.arpa	name = 191-19-55-136.user.vivozap.com.br.

Authoritative answers can be found from:
Related IP info:
Related comments:
IP Type Details Datetime
190.196.229.126 attackbots
Attempted Brute Force (dovecot)
2020-09-18 18:34:31
115.99.104.126 attackbotsspam
port scan and connect, tcp 23 (telnet)
2020-09-18 18:02:12
2002:c1a9:fd88::c1a9:fd88 attackbotsspam
Sep 17 19:18:23 web01.agentur-b-2.de postfix/smtpd[1726692]: warning: unknown[2002:c1a9:fd88::c1a9:fd88]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Sep 17 19:18:23 web01.agentur-b-2.de postfix/smtpd[1726692]: lost connection after AUTH from unknown[2002:c1a9:fd88::c1a9:fd88]
Sep 17 19:19:32 web01.agentur-b-2.de postfix/smtpd[1741399]: warning: unknown[2002:c1a9:fd88::c1a9:fd88]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Sep 17 19:19:32 web01.agentur-b-2.de postfix/smtpd[1741399]: lost connection after AUTH from unknown[2002:c1a9:fd88::c1a9:fd88]
Sep 17 19:19:48 web01.agentur-b-2.de postfix/smtpd[1741741]: warning: unknown[2002:c1a9:fd88::c1a9:fd88]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
2020-09-18 18:22:03
2.59.154.124 attackbots
IP was detected trying to Brute-Force SSH, FTP, Web Apps, Port-Scan or Hacking.
2020-09-18 18:18:44
103.19.201.125 attackspambots
Sep 17 18:32:50 mail.srvfarm.net postfix/smtpd[156674]: warning: unknown[103.19.201.125]: SASL PLAIN authentication failed: 
Sep 17 18:32:50 mail.srvfarm.net postfix/smtpd[156674]: lost connection after AUTH from unknown[103.19.201.125]
Sep 17 18:36:25 mail.srvfarm.net postfix/smtpd[161687]: warning: unknown[103.19.201.125]: SASL PLAIN authentication failed: 
Sep 17 18:36:25 mail.srvfarm.net postfix/smtpd[161687]: lost connection after AUTH from unknown[103.19.201.125]
Sep 17 18:39:51 mail.srvfarm.net postfix/smtpd[157369]: warning: unknown[103.19.201.125]: SASL PLAIN authentication failed:
2020-09-18 18:02:31
193.169.253.173 attackbots
2020-09-18T10:16:55.822624upcloud.m0sh1x2.com sshd[23270]: Invalid user system from 193.169.253.173 port 38110
2020-09-18 18:18:31
94.102.54.199 attack
Sep 18 10:21:16 pop3-login: Info: Aborted login \(auth failed, 1 attempts in 2 secs\): user=\, method=PLAIN, rip=94.102.54.199, lip=192.168.100.101, session=\\
Sep 18 10:25:14 pop3-login: Info: Aborted login \(auth failed, 1 attempts in 2 secs\): user=\, method=PLAIN, rip=94.102.54.199, lip=192.168.100.101, session=\<3zBWPZKvogBeZjbH\>\
Sep 18 10:45:09 pop3-login: Info: Aborted login \(auth failed, 1 attempts in 2 secs\): user=\, method=PLAIN, rip=94.102.54.199, lip=192.168.100.101, session=\\
Sep 18 10:48:31 pop3-login: Info: Aborted login \(auth failed, 1 attempts in 2 secs\): user=\, method=PLAIN, rip=94.102.54.199, lip=192.168.100.101, session=\\
Sep 18 10:51:04 pop3-login: Info: Aborted login \(auth failed, 1 attempts in 2 secs\): user=\, method=PLAIN, rip=94.102.54.199, lip=192.168.100.101, session=\\
Sep 18 10:55:19 pop3-logi
2020-09-18 18:03:45
191.53.237.121 attack
failed_logins
2020-09-18 18:06:57
182.208.252.91 attackspambots
SSH Brute-Force attacks
2020-09-18 18:25:52
78.128.113.120 attackspam
Sep 18 12:01:31 relay postfix/smtpd\[14499\]: warning: unknown\[78.128.113.120\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Sep 18 12:02:56 relay postfix/smtpd\[11149\]: warning: unknown\[78.128.113.120\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Sep 18 12:03:15 relay postfix/smtpd\[15496\]: warning: unknown\[78.128.113.120\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Sep 18 12:03:32 relay postfix/smtpd\[14499\]: warning: unknown\[78.128.113.120\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Sep 18 12:03:42 relay postfix/smtpd\[18606\]: warning: unknown\[78.128.113.120\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...
2020-09-18 18:05:22
45.142.120.53 attackbotsspam
(smtpauth) Failed SMTP AUTH login from 45.142.120.53 (RU/Russia/-): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SMTPAUTH; Logs: 2020-09-18 04:07:27 dovecot_login authenticator failed for (User) [45.142.120.53]:61490: 535 Incorrect authentication data (set_id=plc@xeoserver.com)
2020-09-18 04:07:27 dovecot_login authenticator failed for (User) [45.142.120.53]:54522: 535 Incorrect authentication data (set_id=s157@xeoserver.com)
2020-09-18 04:07:28 dovecot_login authenticator failed for (User) [45.142.120.53]:65520: 535 Incorrect authentication data (set_id=plc@xeoserver.com)
2020-09-18 04:07:31 dovecot_login authenticator failed for (User) [45.142.120.53]:43512: 535 Incorrect authentication data (set_id=cio@xeoserver.com)
2020-09-18 04:07:32 dovecot_login authenticator failed for (User) [45.142.120.53]:39482: 535 Incorrect authentication data (set_id=cio@xeoserver.com)
2020-09-18 18:06:05
95.38.213.130 attack
Sep 17 18:35:59 mail.srvfarm.net postfix/smtps/smtpd[159171]: warning: unknown[95.38.213.130]: SASL PLAIN authentication failed: 
Sep 17 18:35:59 mail.srvfarm.net postfix/smtps/smtpd[159171]: lost connection after AUTH from unknown[95.38.213.130]
Sep 17 18:36:13 mail.srvfarm.net postfix/smtpd[157367]: warning: unknown[95.38.213.130]: SASL PLAIN authentication failed: 
Sep 17 18:36:13 mail.srvfarm.net postfix/smtpd[157367]: lost connection after AUTH from unknown[95.38.213.130]
Sep 17 18:40:25 mail.srvfarm.net postfix/smtpd[156675]: warning: unknown[95.38.213.130]: SASL PLAIN authentication failed:
2020-09-18 18:03:19
172.82.230.4 attackspambots
Sep 17 18:10:22 mail.srvfarm.net postfix/smtpd[143218]: lost connection after STARTTLS from r4.news.eu.rvca.com[172.82.230.4]
Sep 17 18:11:33 mail.srvfarm.net postfix/smtpd[143209]: lost connection after STARTTLS from r4.news.eu.rvca.com[172.82.230.4]
Sep 17 18:15:14 mail.srvfarm.net postfix/smtpd[157368]: lost connection after STARTTLS from r4.news.eu.rvca.com[172.82.230.4]
Sep 17 18:17:56 mail.srvfarm.net postfix/smtpd[157368]: lost connection after STARTTLS from r4.news.eu.rvca.com[172.82.230.4]
Sep 17 18:18:16 mail.srvfarm.net postfix/smtpd[143204]: lost connection after STARTTLS from r4.news.eu.rvca.com[172.82.230.4]
2020-09-18 18:11:13
159.192.104.253 attack
1600361791 - 09/17/2020 18:56:31 Host: 159.192.104.253/159.192.104.253 Port: 445 TCP Blocked
2020-09-18 18:33:15
103.207.6.16 attackbots
Sep 17 18:16:38 mail.srvfarm.net postfix/smtps/smtpd[157125]: warning: unknown[103.207.6.16]: SASL PLAIN authentication failed: 
Sep 17 18:16:39 mail.srvfarm.net postfix/smtps/smtpd[157125]: lost connection after AUTH from unknown[103.207.6.16]
Sep 17 18:18:26 mail.srvfarm.net postfix/smtpd[143206]: warning: unknown[103.207.6.16]: SASL PLAIN authentication failed: 
Sep 17 18:18:26 mail.srvfarm.net postfix/smtpd[143206]: lost connection after AUTH from unknown[103.207.6.16]
Sep 17 18:18:42 mail.srvfarm.net postfix/smtps/smtpd[140188]: warning: unknown[103.207.6.16]: SASL PLAIN authentication failed:
2020-09-18 18:12:46

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