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
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
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
91.245.30.125 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
91.245.30.107 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
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:
b
Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 91.245.30.92
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 49740
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

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

;; AUTHORITY SECTION:
.			305	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2020082702 1800 900 604800 86400

;; Query time: 156 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Aug 28 09:43:36 CST 2020
;; MSG SIZE  rcvd: 116
Host info
92.30.245.91.in-addr.arpa domain name pointer static30-092.okcomp.cz.
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

Non-authoritative answer:
92.30.245.91.in-addr.arpa	name = static30-092.okcomp.cz.

Authoritative answers can be found from:
Related IP info:
Related comments:
IP Type Details Datetime
202.77.105.100 attackbotsspam
Invalid user test from 202.77.105.100 port 56241
2020-06-19 05:11:52
129.213.102.103 attackbotsspam
2020-05-09T16:58:09.484Z CLOSE host=129.213.102.103 port=53000 fd=4 time=20.008 bytes=22
...
2020-06-19 04:48:45
89.232.100.186 attackspam
Unauthorized connection attempt from IP address 89.232.100.186 on Port 445(SMB)
2020-06-19 05:08:26
63.81.93.80 attackbotsspam
Jun 18 10:09:53 mail.srvfarm.net postfix/smtpd[1383333]: NOQUEUE: reject: RCPT from unknown[63.81.93.80]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Jun 18 10:10:14 mail.srvfarm.net postfix/smtpd[1383765]: NOQUEUE: reject: RCPT from unknown[63.81.93.80]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Jun 18 10:10:22 mail.srvfarm.net postfix/smtpd[1383334]: NOQUEUE: reject: RCPT from resolute.nonnastar.com[63.81.93.80]: 450 4.1.8 : Sender address rejected: Domain not found; from= to= proto=ESMTP helo=
Jun 18 10:10:43 mail.srvfarm.net postfix/smtpd[1384375]: NOQUEUE: reject: RCPT from res
2020-06-19 04:39:00
47.8.188.139 attack
Unauthorized connection attempt from IP address 47.8.188.139 on Port 445(SMB)
2020-06-19 05:04:33
49.234.81.178 attackspambots
Unauthorized connection attempt from IP address 49.234.81.178 on Port 445(SMB)
2020-06-19 05:09:59
212.244.23.44 attackspambots
Jun 18 10:03:45 mail.srvfarm.net postfix/smtps/smtpd[1383642]: warning: unknown[212.244.23.44]: SASL PLAIN authentication failed: 
Jun 18 10:03:45 mail.srvfarm.net postfix/smtps/smtpd[1383642]: lost connection after AUTH from unknown[212.244.23.44]
Jun 18 10:05:24 mail.srvfarm.net postfix/smtps/smtpd[1382769]: warning: unknown[212.244.23.44]: SASL PLAIN authentication failed: 
Jun 18 10:05:24 mail.srvfarm.net postfix/smtps/smtpd[1382769]: lost connection after AUTH from unknown[212.244.23.44]
Jun 18 10:11:15 mail.srvfarm.net postfix/smtps/smtpd[1384169]: warning: unknown[212.244.23.44]: SASL PLAIN authentication failed:
2020-06-19 04:34:03
94.232.157.218 attackspam
Jun 18 10:04:56 mail.srvfarm.net postfix/smtps/smtpd[1383611]: warning: ip-94-232-157-218.nette.pl[94.232.157.218]: SASL PLAIN authentication failed: 
Jun 18 10:04:56 mail.srvfarm.net postfix/smtps/smtpd[1383611]: lost connection after AUTH from ip-94-232-157-218.nette.pl[94.232.157.218]
Jun 18 10:06:07 mail.srvfarm.net postfix/smtps/smtpd[1383115]: warning: ip-94-232-157-218.nette.pl[94.232.157.218]: SASL PLAIN authentication failed: 
Jun 18 10:06:07 mail.srvfarm.net postfix/smtps/smtpd[1383115]: lost connection after AUTH from ip-94-232-157-218.nette.pl[94.232.157.218]
Jun 18 10:13:14 mail.srvfarm.net postfix/smtps/smtpd[1383619]: warning: ip-94-232-157-218.nette.pl[94.232.157.218]: SASL PLAIN authentication failed:
2020-06-19 04:36:39
88.199.42.42 attackbots
Jun 18 10:14:19 mail.srvfarm.net postfix/smtps/smtpd[1383925]: warning: 88-199-42-42.tktelekom.pl[88.199.42.42]: SASL PLAIN authentication failed: 
Jun 18 10:14:19 mail.srvfarm.net postfix/smtps/smtpd[1383925]: lost connection after AUTH from 88-199-42-42.tktelekom.pl[88.199.42.42]
Jun 18 10:17:00 mail.srvfarm.net postfix/smtps/smtpd[1383076]: warning: 88-199-42-42.tktelekom.pl[88.199.42.42]: SASL PLAIN authentication failed: 
Jun 18 10:17:00 mail.srvfarm.net postfix/smtps/smtpd[1383076]: lost connection after AUTH from 88-199-42-42.tktelekom.pl[88.199.42.42]
Jun 18 10:19:18 mail.srvfarm.net postfix/smtps/smtpd[1383925]: warning: 88-199-42-42.tktelekom.pl[88.199.42.42]: SASL PLAIN authentication failed:
2020-06-19 04:38:31
200.41.86.59 attack
(sshd) Failed SSH login from 200.41.86.59 (AR/Argentina/-): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SSHD; Logs: Jun 18 18:54:22 amsweb01 sshd[32551]: Invalid user jiaxing from 200.41.86.59 port 40434
Jun 18 18:54:24 amsweb01 sshd[32551]: Failed password for invalid user jiaxing from 200.41.86.59 port 40434 ssh2
Jun 18 19:05:36 amsweb01 sshd[1793]: Invalid user confluence from 200.41.86.59 port 60180
Jun 18 19:05:38 amsweb01 sshd[1793]: Failed password for invalid user confluence from 200.41.86.59 port 60180 ssh2
Jun 18 19:09:04 amsweb01 sshd[2469]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=200.41.86.59  user=root
2020-06-19 04:44:58
1.2.141.222 attack
Jun 18 23:15:41 master sshd[11167]: Failed password for invalid user admin from 1.2.141.222 port 55957 ssh2
2020-06-19 05:08:49
151.248.63.230 attackspambots
Jun 18 10:19:51 mail.srvfarm.net postfix/smtps/smtpd[1383076]: warning: unknown[151.248.63.230]: SASL PLAIN authentication failed: 
Jun 18 10:19:51 mail.srvfarm.net postfix/smtps/smtpd[1383076]: lost connection after AUTH from unknown[151.248.63.230]
Jun 18 10:23:17 mail.srvfarm.net postfix/smtps/smtpd[1383076]: warning: unknown[151.248.63.230]: SASL PLAIN authentication failed: 
Jun 18 10:23:17 mail.srvfarm.net postfix/smtps/smtpd[1383076]: lost connection after AUTH from unknown[151.248.63.230]
Jun 18 10:26:45 mail.srvfarm.net postfix/smtps/smtpd[1383001]: warning: unknown[151.248.63.230]: SASL PLAIN authentication failed:
2020-06-19 04:31:39
222.186.30.76 attack
Jun 19 03:51:54 itv-usvr-02 sshd[20458]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.30.76  user=root
Jun 19 03:51:57 itv-usvr-02 sshd[20458]: Failed password for root from 222.186.30.76 port 38110 ssh2
2020-06-19 04:54:03
202.169.45.20 attackbotsspam
Registration form abuse
2020-06-19 04:41:08
61.64.177.20 attack
Port probing on unauthorized port 23
2020-06-19 04:53:31

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