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: Czechia

Internet Service Provider: Ales Krepela - KREPNET

Hostname: unknown

Organization: unknown

Usage Type: Fixed Line ISP

Comments:
Type Details Datetime
attack
Sep 15 18:40:20 mail.srvfarm.net postfix/smtps/smtpd[2822043]: warning: unknown[93.99.4.23]: SASL PLAIN authentication failed: 
Sep 15 18:40:20 mail.srvfarm.net postfix/smtps/smtpd[2822043]: lost connection after AUTH from unknown[93.99.4.23]
Sep 15 18:40:50 mail.srvfarm.net postfix/smtps/smtpd[2827555]: warning: unknown[93.99.4.23]: SASL PLAIN authentication failed: 
Sep 15 18:40:50 mail.srvfarm.net postfix/smtps/smtpd[2827555]: lost connection after AUTH from unknown[93.99.4.23]
Sep 15 18:48:25 mail.srvfarm.net postfix/smtpd[2827929]: warning: unknown[93.99.4.23]: SASL PLAIN authentication failed:
2020-09-17 02:39:58
attack
Sep 15 18:40:20 mail.srvfarm.net postfix/smtps/smtpd[2822043]: warning: unknown[93.99.4.23]: SASL PLAIN authentication failed: 
Sep 15 18:40:20 mail.srvfarm.net postfix/smtps/smtpd[2822043]: lost connection after AUTH from unknown[93.99.4.23]
Sep 15 18:40:50 mail.srvfarm.net postfix/smtps/smtpd[2827555]: warning: unknown[93.99.4.23]: SASL PLAIN authentication failed: 
Sep 15 18:40:50 mail.srvfarm.net postfix/smtps/smtpd[2827555]: lost connection after AUTH from unknown[93.99.4.23]
Sep 15 18:48:25 mail.srvfarm.net postfix/smtpd[2827929]: warning: unknown[93.99.4.23]: SASL PLAIN authentication failed:
2020-09-16 18:58:53
attack
Brute force attempt
2020-05-24 01:29:57
Comments on same subnet:
IP Type Details Datetime
93.99.4.22 attackbotsspam
Aug 27 11:22:42 mail.srvfarm.net postfix/smtps/smtpd[1499868]: warning: unknown[93.99.4.22]: SASL PLAIN authentication failed: 
Aug 27 11:22:42 mail.srvfarm.net postfix/smtps/smtpd[1499868]: lost connection after AUTH from unknown[93.99.4.22]
Aug 27 11:24:17 mail.srvfarm.net postfix/smtps/smtpd[1499867]: warning: unknown[93.99.4.22]: SASL PLAIN authentication failed: 
Aug 27 11:24:17 mail.srvfarm.net postfix/smtps/smtpd[1499867]: lost connection after AUTH from unknown[93.99.4.22]
Aug 27 11:30:04 mail.srvfarm.net postfix/smtpd[1488223]: warning: unknown[93.99.4.22]: SASL PLAIN authentication failed:
2020-08-28 08:15:55
93.99.4.38 attackbots
SASL PLAIN auth failed: ruser=...
2020-07-17 06:37:07
93.99.4.22 attackspambots
Jul  9 13:50:53 mail.srvfarm.net postfix/smtpd[3819465]: warning: unknown[93.99.4.22]: SASL PLAIN authentication failed: 
Jul  9 13:50:53 mail.srvfarm.net postfix/smtpd[3819465]: lost connection after AUTH from unknown[93.99.4.22]
Jul  9 13:52:25 mail.srvfarm.net postfix/smtpd[3817751]: warning: unknown[93.99.4.22]: SASL PLAIN authentication failed: 
Jul  9 13:52:25 mail.srvfarm.net postfix/smtpd[3817751]: lost connection after AUTH from unknown[93.99.4.22]
Jul  9 13:56:23 mail.srvfarm.net postfix/smtpd[3825207]: warning: unknown[93.99.4.22]: SASL PLAIN authentication failed:
2020-07-10 01:07:15
93.99.4.22 attackspambots
(smtpauth) Failed SMTP AUTH login from 93.99.4.22 (CZ/Czechia/-): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_TRIGGER; Logs: 2020-05-10 08:25:06 plain authenticator failed for ([93.99.4.22]) [93.99.4.22]: 535 Incorrect authentication data (set_id=sale@emad-security.com)
2020-05-10 13:30:16
93.99.49.50 attackspambots
Unauthorized connection attempt detected from IP address 93.99.49.50 to port 23 [J]
2020-01-22 23:34:06
93.99.42.18 attack
Jul 15 08:16:01 rigel postfix/smtpd[31991]: warning: hostname 18pc.vranet.cz does not resolve to address 93.99.42.18
Jul 15 08:16:01 rigel postfix/smtpd[31991]: connect from unknown[93.99.42.18]
Jul 15 08:16:02 rigel postfix/smtpd[31991]: warning: unknown[93.99.42.18]: SASL CRAM-MD5 authentication failed: authentication failure
Jul 15 08:16:02 rigel postfix/smtpd[31991]: warning: unknown[93.99.42.18]: SASL PLAIN authentication failed: authentication failure
Jul 15 08:16:02 rigel postfix/smtpd[31991]: warning: unknown[93.99.42.18]: SASL LOGIN authentication failed: authentication failure
Jul 15 08:16:02 rigel postfix/smtpd[31991]: disconnect from unknown[93.99.42.18]


........
-----------------------------------------------
https://www.blocklist.de/en/view.html?ip=93.99.42.18
2019-07-15 21:04:32
Whois info:
b
Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 93.99.4.23
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 36665
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

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

;; AUTHORITY SECTION:
.			494	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2020052301 1800 900 604800 86400

;; Query time: 91 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Sun May 24 01:29:52 CST 2020
;; MSG SIZE  rcvd: 114
Host info
Host 23.4.99.93.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 23.4.99.93.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
220.133.90.70 attackspam
Telnet Server BruteForce Attack
2020-07-29 19:28:31
122.51.45.200 attack
malicious Brute-Force reported by https://www.patrick-binder.de
...
2020-07-29 19:25:32
49.235.222.191 attackbots
Jul 29 13:58:15 lunarastro sshd[1469]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=49.235.222.191 
Jul 29 13:58:16 lunarastro sshd[1469]: Failed password for invalid user jieba-php from 49.235.222.191 port 50526 ssh2
2020-07-29 19:18:03
60.167.178.161 attack
Invalid user panb from 60.167.178.161 port 56810
2020-07-29 19:15:30
89.198.63.5 attackbots
Mail/25/465/587-993/995 Probe, Reject, BadAuth, Hack, SPAM -
2020-07-29 19:31:42
40.77.167.13 attackspambots
[Wed Jul 29 10:49:18.901559 2020] [:error] [pid 26471:tid 140232877713152] [client 40.77.167.13:3494] [client 40.77.167.13] ModSecurity: Access denied with code 403 (phase 4). Pattern match "^5\\\\d{2}$" at RESPONSE_STATUS. [file "/etc/modsecurity/owasp-modsecurity-crs-3.2.0/rules/RESPONSE-950-DATA-LEAKAGES.conf"] [line "118"] [id "950100"] [msg "The Application Returned a 500-Level Status Code"] [data "Matched Data: 500 found within RESPONSE_STATUS: 500"] [severity "ERROR"] [ver "OWASP_CRS/3.2.0"] [tag "application-multi"] [tag "language-multi"] [tag "platform-multi"] [tag "attack-disclosure"] [tag "WASCTC/WASC-13"] [tag "OWASP_TOP_10/A6"] [tag "PCI/6.5.6"] [tag "paranoia-level/2"] [hostname "staklim-malang.info"] [uri "/index.php/agroklimatologi/kalender-tanam/2491-kalender-tanam-katam-terpadu-pulau-sumatra/kalender-tanam-katam-terpadu-provinsi-aceh/kalender-tanam-katam-terpadu-kabupaten-aceh-barat-daya-provinsi-aceh/kalender-tanam-katam-terpadu-kecamatan-susoh-kabupaten-aceh-barat-d
...
2020-07-29 19:20:28
185.132.53.194 attackbotsspam
DATE:2020-07-29 05:49:50, IP:185.132.53.194, PORT:telnet Telnet brute force auth on honeypot server (honey-neo-dc)
2020-07-29 18:53:44
64.64.104.10 attack
Unauthorized connection attempt detected from IP address 64.64.104.10 to port 8140
2020-07-29 19:11:26
68.183.83.38 attackspambots
leo_www
2020-07-29 19:10:11
115.159.214.200 attackbotsspam
Invalid user webdev from 115.159.214.200 port 55400
2020-07-29 19:07:16
181.57.168.174 attackspambots
Automatic Fail2ban report - Trying login SSH
2020-07-29 19:26:40
104.215.182.47 attackspam
k+ssh-bruteforce
2020-07-29 19:33:36
92.170.42.223 attackspam
Brute forcing email accounts
2020-07-29 19:00:03
154.0.173.16 attackspam
C1,WP GET /suche/wp-login.php
2020-07-29 19:29:22
102.164.202.77 attackspambots
This IP address has tried to hack into my gmail account. I am extremely concerned and scared as I had an attempted log into my Instagram account in Texas yesterday morning.
2020-07-29 19:05:41

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