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: OK COMP s.r.o.

Hostname: unknown

Organization: unknown

Usage Type: Commercial

Comments:
Type Details Datetime
attack
Jul 29 08:08:18 Host-KEWR-E postfix/smtps/smtpd[30397]: lost connection after AUTH from unknown[91.245.30.107]
...
2020-07-30 02:08:00
Comments on same subnet:
IP Type Details Datetime
91.245.30.150 attackspambots
Sep 11 18:00:30 mail.srvfarm.net postfix/smtps/smtpd[3875317]: warning: unknown[91.245.30.150]: SASL PLAIN authentication failed: 
Sep 11 18:00:30 mail.srvfarm.net postfix/smtps/smtpd[3875317]: lost connection after AUTH from unknown[91.245.30.150]
Sep 11 18:06:45 mail.srvfarm.net postfix/smtps/smtpd[3875620]: warning: unknown[91.245.30.150]: SASL PLAIN authentication failed: 
Sep 11 18:06:45 mail.srvfarm.net postfix/smtps/smtpd[3875620]: lost connection after AUTH from unknown[91.245.30.150]
Sep 11 18:08:32 mail.srvfarm.net postfix/smtpd[3889545]: warning: unknown[91.245.30.150]: SASL PLAIN authentication failed:
2020-09-13 01:43:37
91.245.30.150 attackspam
Sep 11 18:00:30 mail.srvfarm.net postfix/smtps/smtpd[3875317]: warning: unknown[91.245.30.150]: SASL PLAIN authentication failed: 
Sep 11 18:00:30 mail.srvfarm.net postfix/smtps/smtpd[3875317]: lost connection after AUTH from unknown[91.245.30.150]
Sep 11 18:06:45 mail.srvfarm.net postfix/smtps/smtpd[3875620]: warning: unknown[91.245.30.150]: SASL PLAIN authentication failed: 
Sep 11 18:06:45 mail.srvfarm.net postfix/smtps/smtpd[3875620]: lost connection after AUTH from unknown[91.245.30.150]
Sep 11 18:08:32 mail.srvfarm.net postfix/smtpd[3889545]: warning: unknown[91.245.30.150]: SASL PLAIN authentication failed:
2020-09-12 17:43:32
91.245.30.79 attack
Sep  7 12:09:56 mail.srvfarm.net postfix/smtpd[1050887]: warning: unknown[91.245.30.79]: SASL PLAIN authentication failed: 
Sep  7 12:09:56 mail.srvfarm.net postfix/smtpd[1050887]: lost connection after AUTH from unknown[91.245.30.79]
Sep  7 12:14:31 mail.srvfarm.net postfix/smtpd[1050882]: warning: unknown[91.245.30.79]: SASL PLAIN authentication failed: 
Sep  7 12:14:31 mail.srvfarm.net postfix/smtpd[1050882]: lost connection after AUTH from unknown[91.245.30.79]
Sep  7 12:15:08 mail.srvfarm.net postfix/smtpd[1039277]: warning: unknown[91.245.30.79]: SASL PLAIN authentication failed:
2020-09-12 02:45:11
91.245.30.79 attack
Sep  7 12:09:56 mail.srvfarm.net postfix/smtpd[1050887]: warning: unknown[91.245.30.79]: SASL PLAIN authentication failed: 
Sep  7 12:09:56 mail.srvfarm.net postfix/smtpd[1050887]: lost connection after AUTH from unknown[91.245.30.79]
Sep  7 12:14:31 mail.srvfarm.net postfix/smtpd[1050882]: warning: unknown[91.245.30.79]: SASL PLAIN authentication failed: 
Sep  7 12:14:31 mail.srvfarm.net postfix/smtpd[1050882]: lost connection after AUTH from unknown[91.245.30.79]
Sep  7 12:15:08 mail.srvfarm.net postfix/smtpd[1039277]: warning: unknown[91.245.30.79]: SASL PLAIN authentication failed:
2020-09-11 18:41:19
91.245.30.71 attackspambots
Brute force attempt
2020-08-31 13:04:59
91.245.30.92 attack
Aug 27 04:21:01 mail.srvfarm.net postfix/smtpd[1314728]: warning: unknown[91.245.30.92]: SASL PLAIN authentication failed: 
Aug 27 04:21:01 mail.srvfarm.net postfix/smtpd[1314728]: lost connection after AUTH from unknown[91.245.30.92]
Aug 27 04:22:47 mail.srvfarm.net postfix/smtpd[1332132]: warning: unknown[91.245.30.92]: SASL PLAIN authentication failed: 
Aug 27 04:22:47 mail.srvfarm.net postfix/smtpd[1332132]: lost connection after AUTH from unknown[91.245.30.92]
Aug 27 04:24:00 mail.srvfarm.net postfix/smtpd[1313892]: warning: unknown[91.245.30.92]: SASL PLAIN authentication failed:
2020-08-28 09:43:43
91.245.30.125 attack
Aug 16 05:14:59 mail.srvfarm.net postfix/smtps/smtpd[1888763]: warning: unknown[91.245.30.125]: SASL PLAIN authentication failed: 
Aug 16 05:14:59 mail.srvfarm.net postfix/smtps/smtpd[1888763]: lost connection after AUTH from unknown[91.245.30.125]
Aug 16 05:22:34 mail.srvfarm.net postfix/smtpd[1888825]: warning: unknown[91.245.30.125]: SASL PLAIN authentication failed: 
Aug 16 05:22:34 mail.srvfarm.net postfix/smtpd[1888825]: lost connection after AUTH from unknown[91.245.30.125]
Aug 16 05:24:01 mail.srvfarm.net postfix/smtpd[1888504]: warning: unknown[91.245.30.125]: SASL PLAIN authentication failed:
2020-08-16 13:05:13
91.245.30.150 attackspam
Jul 31 13:44:23 mail.srvfarm.net postfix/smtpd[346670]: warning: unknown[91.245.30.150]: SASL PLAIN authentication failed: 
Jul 31 13:44:23 mail.srvfarm.net postfix/smtpd[346670]: lost connection after AUTH from unknown[91.245.30.150]
Jul 31 13:46:32 mail.srvfarm.net postfix/smtps/smtpd[344849]: warning: unknown[91.245.30.150]: SASL PLAIN authentication failed: 
Jul 31 13:46:32 mail.srvfarm.net postfix/smtps/smtpd[344849]: lost connection after AUTH from unknown[91.245.30.150]
Jul 31 13:49:58 mail.srvfarm.net postfix/smtps/smtpd[348862]: warning: unknown[91.245.30.150]: SASL PLAIN authentication failed:
2020-08-01 00:31:18
91.245.30.105 attack
Jul 31 10:41:23 mail.srvfarm.net postfix/smtpd[280510]: warning: unknown[91.245.30.105]: SASL PLAIN authentication failed: 
Jul 31 10:41:23 mail.srvfarm.net postfix/smtpd[280510]: lost connection after AUTH from unknown[91.245.30.105]
Jul 31 10:41:40 mail.srvfarm.net postfix/smtps/smtpd[274710]: warning: unknown[91.245.30.105]: SASL PLAIN authentication failed: 
Jul 31 10:41:40 mail.srvfarm.net postfix/smtps/smtpd[274710]: lost connection after AUTH from unknown[91.245.30.105]
Jul 31 10:48:26 mail.srvfarm.net postfix/smtps/smtpd[278874]: warning: unknown[91.245.30.105]: SASL PLAIN authentication failed:
2020-07-31 17:22:19
91.245.30.146 attack
(smtpauth) Failed SMTP AUTH login from 91.245.30.146 (CZ/Czechia/static30-146.okcomp.cz): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_TRIGGER; Logs: 2020-07-31 08:23:45 plain authenticator failed for ([91.245.30.146]) [91.245.30.146]: 535 Incorrect authentication data (set_id=a.nasiri)
2020-07-31 14:47:17
91.245.30.100 attackspambots
(smtpauth) Failed SMTP AUTH login from 91.245.30.100 (CZ/Czechia/static30-100.okcomp.cz): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_TRIGGER; Logs: 2020-07-28 16:35:05 plain authenticator failed for ([91.245.30.100]) [91.245.30.100]: 535 Incorrect authentication data (set_id=nasr)
2020-07-28 23:53:11
91.245.30.147 attackspam
Jul 26 05:47:51 mail.srvfarm.net postfix/smtps/smtpd[1027769]: warning: unknown[91.245.30.147]: SASL PLAIN authentication failed: 
Jul 26 05:47:51 mail.srvfarm.net postfix/smtps/smtpd[1027769]: lost connection after AUTH from unknown[91.245.30.147]
Jul 26 05:50:19 mail.srvfarm.net postfix/smtps/smtpd[1031887]: warning: unknown[91.245.30.147]: SASL PLAIN authentication failed: 
Jul 26 05:50:19 mail.srvfarm.net postfix/smtps/smtpd[1031887]: lost connection after AUTH from unknown[91.245.30.147]
Jul 26 05:52:29 mail.srvfarm.net postfix/smtps/smtpd[1032031]: warning: unknown[91.245.30.147]: SASL PLAIN authentication failed:
2020-07-26 17:32:59
91.245.30.75 attackspambots
SASL PLAIN auth failed: ruser=...
2020-07-16 08:31:09
91.245.30.115 attack
Jun 16 05:23:09 mail.srvfarm.net postfix/smtps/smtpd[938143]: warning: unknown[91.245.30.115]: SASL PLAIN authentication failed: 
Jun 16 05:23:09 mail.srvfarm.net postfix/smtps/smtpd[938143]: lost connection after AUTH from unknown[91.245.30.115]
Jun 16 05:26:56 mail.srvfarm.net postfix/smtpd[916111]: warning: unknown[91.245.30.115]: SASL PLAIN authentication failed: 
Jun 16 05:26:56 mail.srvfarm.net postfix/smtpd[916111]: lost connection after AUTH from unknown[91.245.30.115]
Jun 16 05:28:42 mail.srvfarm.net postfix/smtps/smtpd[936248]: warning: unknown[91.245.30.115]: SASL PLAIN authentication failed:
2020-06-16 16:21:02
91.245.30.150 attackspam
Jun  5 18:29:15 mail.srvfarm.net postfix/smtps/smtpd[3174072]: warning: unknown[91.245.30.150]: SASL PLAIN authentication failed: 
Jun  5 18:29:15 mail.srvfarm.net postfix/smtps/smtpd[3174072]: lost connection after AUTH from unknown[91.245.30.150]
Jun  5 18:35:54 mail.srvfarm.net postfix/smtps/smtpd[3174071]: warning: unknown[91.245.30.150]: SASL PLAIN authentication failed: 
Jun  5 18:35:54 mail.srvfarm.net postfix/smtps/smtpd[3174071]: lost connection after AUTH from unknown[91.245.30.150]
Jun  5 18:37:37 mail.srvfarm.net postfix/smtps/smtpd[3175482]: warning: unknown[91.245.30.150]: SASL PLAIN authentication failed:
2020-06-07 23:41:21
Whois info:
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Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 91.245.30.107
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 4911
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

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

;; AUTHORITY SECTION:
.			419	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2020072901 1800 900 604800 86400

;; Query time: 37 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Thu Jul 30 02:07:56 CST 2020
;; MSG SIZE  rcvd: 117
Host info
107.30.245.91.in-addr.arpa domain name pointer static30-107.okcomp.cz.
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

Non-authoritative answer:
107.30.245.91.in-addr.arpa	name = static30-107.okcomp.cz.

Authoritative answers can be found from:
Related IP info:
Related comments:
IP Type Details Datetime
103.207.11.12 attackspam
Aug 25 09:54:20 lcl-usvr-02 sshd[5819]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=103.207.11.12  user=root
Aug 25 09:54:23 lcl-usvr-02 sshd[5819]: Failed password for root from 103.207.11.12 port 53424 ssh2
Aug 25 09:58:49 lcl-usvr-02 sshd[6854]: Invalid user despacho from 103.207.11.12 port 43370
Aug 25 09:58:49 lcl-usvr-02 sshd[6854]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=103.207.11.12
Aug 25 09:58:49 lcl-usvr-02 sshd[6854]: Invalid user despacho from 103.207.11.12 port 43370
Aug 25 09:58:51 lcl-usvr-02 sshd[6854]: Failed password for invalid user despacho from 103.207.11.12 port 43370 ssh2
...
2019-08-25 14:01:33
213.33.142.90 attack
Unauthorized connection attempt from IP address 213.33.142.90 on Port 445(SMB)
2019-08-25 12:38:14
206.189.165.34 attackspam
Invalid user zliu from 206.189.165.34 port 52324
2019-08-25 13:10:30
89.248.160.193 attackbots
Splunk® : port scan detected:
Aug 25 00:38:27 testbed kernel: Firewall: *TCP_IN Blocked* IN=eth0 OUT= MAC=82:c6:52:d1:6e:53:64:c3:d6:0b:ef:f0:08:00 SRC=89.248.160.193 DST=104.248.11.191 LEN=40 TOS=0x00 PREC=0x00 TTL=245 ID=37116 PROTO=TCP SPT=41123 DPT=2115 WINDOW=1024 RES=0x00 SYN URGP=0
2019-08-25 13:13:02
222.67.191.241 attackbots
Unauthorized connection attempt from IP address 222.67.191.241 on Port 445(SMB)
2019-08-25 12:53:48
104.248.32.164 attack
Aug 25 07:26:57 * sshd[28570]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=104.248.32.164
Aug 25 07:26:59 * sshd[28570]: Failed password for invalid user guest1 from 104.248.32.164 port 59598 ssh2
2019-08-25 13:56:51
188.128.39.127 attackbots
Aug 24 23:26:53 Ubuntu-1404-trusty-64-minimal sshd\[8597\]: Invalid user linuxacademy from 188.128.39.127
Aug 24 23:26:53 Ubuntu-1404-trusty-64-minimal sshd\[8597\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=188.128.39.127
Aug 24 23:26:55 Ubuntu-1404-trusty-64-minimal sshd\[8597\]: Failed password for invalid user linuxacademy from 188.128.39.127 port 34904 ssh2
Aug 24 23:39:59 Ubuntu-1404-trusty-64-minimal sshd\[17212\]: Invalid user ubuntu from 188.128.39.127
Aug 24 23:39:59 Ubuntu-1404-trusty-64-minimal sshd\[17212\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=188.128.39.127
2019-08-25 12:59:04
198.108.67.37 attackspambots
firewall-block, port(s): 9039/tcp
2019-08-25 12:43:37
14.188.101.100 attack
Unauthorized connection attempt from IP address 14.188.101.100 on Port 445(SMB)
2019-08-25 13:29:31
92.38.101.35 attack
Unauthorized connection attempt from IP address 92.38.101.35 on Port 445(SMB)
2019-08-25 13:16:15
46.101.205.211 attack
Invalid user yasmina from 46.101.205.211 port 52480
2019-08-25 12:43:08
1.1.183.44 attackspam
Unauthorized connection attempt from IP address 1.1.183.44 on Port 445(SMB)
2019-08-25 13:45:44
95.58.194.141 attackspam
Invalid user teste from 95.58.194.141 port 48682
2019-08-25 13:05:52
183.224.78.176 attackspam
firewall-block, port(s): 23/tcp
2019-08-25 12:46:31
95.85.60.251 attackspam
Aug 24 12:54:32 web1 sshd\[17436\]: Invalid user nagios from 95.85.60.251
Aug 24 12:54:32 web1 sshd\[17436\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=95.85.60.251
Aug 24 12:54:34 web1 sshd\[17436\]: Failed password for invalid user nagios from 95.85.60.251 port 36486 ssh2
Aug 24 12:59:50 web1 sshd\[17947\]: Invalid user tsserver from 95.85.60.251
Aug 24 12:59:50 web1 sshd\[17947\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=95.85.60.251
2019-08-25 13:01:15

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