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AbuseIPDB » 91.92.241.87

91.92.241.87 was found in our database!

This IP was reported 513 times. Confidence of Abuse is 100%: ?

100%

ISP	OMEGATECH
Usage Type	Data Center/Web Hosting/Transit
ASN	AS202412
Domain Name	omegatech.sc
Country	🇳🇱 Netherlands
City	Amsterdam, North Holland

IP info including ISP, Usage Type, and Location provided by IPInfo. Updated weekly.

Report 91.92.241.87

Whois 91.92.241.87

IP Abuse Reports for 91.92.241.87:

This IP address has been reported a total of 513 times from 167 distinct sources. 91.92.241.87 was first reported on March 23rd 2026, and the most recent report was 1 hour ago.

Recent Reports: We have received reports of abusive activity from this IP address within the last week. It is potentially still actively engaged in abusive activities.

Reporter	IoA Timestamp (UTC)	Comment	Categories
🇺🇸 AWSGIEMSAN7	2026-05-27 15:57:07 (1 week ago)	Blocked by Fail2ban (Jail: postfix-sender-rejected-relay)..	Brute-Force
🇳🇱 NP Admin	2026-05-27 15:04:33 (1 week ago)	Detections=4	Brute-Force
🇫🇷 IpdbBot	2026-05-27 14:26:11 (1 week ago)	Spam attack detected	Hacking
🇨🇭 SOC [GOLINE SA]	2026-05-27 13:40:58 (1 week ago)	SMTP Authentication Attack === ATTACK === Type: SMTP/SASL Auth Attack \| Pattern: Multiple failed aut ... show more SMTP Authentication Attack === ATTACK === Type: SMTP/SASL Auth Attack \| Pattern: Multiple failed auth attempts === SOURCE === IP: 91.92.241.87 (IPv4) \| Country: The Netherlands \| ISP: OMEGATECH \| rDNS: None === TARGET === Host: lilys.ch \| Ports: 25,465,587 \| Protocol: TCP === RESPONSE === Time: 2026-05-27 15:40:58 \| Action: Blocked show less	Email Spam Brute-Force
🇩🇪 kreativstrecke	2026-05-27 13:38:04 (1 week ago)	2026-05-27T15:38:03.543066+02:00 srv02 postfix/postscreen[2998782]: PREGREET 15 after 0.04 from [91. ... show more 2026-05-27T15:38:03.543066+02:00 srv02 postfix/postscreen[2998782]: PREGREET 15 after 0.04 from [91.92.241.87]:49986: EHLO 1weAd9Vy\r\n ... show less	Brute-Force
🇬🇧 Bytemark	2026-05-27 13:07:44 (1 week ago)	May 27 14:07:01 dlcentre3 postfix/smtpd[23135]: warning: unknown[91.92.241.87]: SASL LOGIN authentic ... show more May 27 14:07:01 dlcentre3 postfix/smtpd[23135]: warning: unknown[91.92.241.87]: SASL LOGIN authentication failed: UGFzc3dvcmQ6 May 27 14:07:07 dlcentre3 postfix/smtpd[23135]: warning: unknown[91.92.241.87]: SASL LOGIN authentication failed: UGFzc3dvcmQ6 May 27 14:07:17 dlcentre3 postfix/smtpd[23135]: warning: unknown[91.92.241.87]: SASL LOGIN authentication failed: UGFzc3dvcmQ6 May 27 14:07:41 dlcentre3 postfix/smtpd[23135]: warning: unknown[91.92.241.87]: SASL LOGIN authentication failed: UGFzc3dvcmQ6 May 27 14:07:43 dlcentre3 postfix/smtpd[24723]: warning: unknown[91.92.241.87]: SASL LOGIN authentication failed: UGFzc3dvcmQ6 show less	Email Spam Spoofing Brute-Force Exploited Host
🇺🇸 hostmach	2026-05-27 13:01:31 (1 week ago)	(smtpauth) Failed SMTP AUTH login from 91.92.241.87 (NL/The Netherlands/-): 5 in the last 3600 secs; ... show more (smtpauth) Failed SMTP AUTH login from 91.92.241.87 (NL/The Netherlands/-): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SMTPAUTH; Logs: 2026-05-27 08:59:34 dovecot_login authenticator failed for H=(oDMXtcVF5) [91.92.241.87]:58202: 535 Incorrect authentication data (set_id=jasbor) 2026-05-27 08:59:57 dovecot_login authenticator failed for H=(X9wgtsvWZZ) [91.92.241.87]:52697: 535 Incorrect authentication data (set_id=jasbor) 2026-05-27 09:00:20 dovecot_login authenticator failed for H=(2fNtOIFxP) [91.92.241.87]:63362: 535 Incorrect authentication data ([email protected]) 2026-05-27 09:00:43 dovecot_login authenticator failed for H=(jLrFOB6zUp) [91.92.241.87]:57740: 535 Incorrect authentication data ([email protected]) 2026-05-27 09:01:28 dovecot_login authenticator failed for H=(lfmaYZd) [91.92.241.87]:61464: 535 Incorrect authentication data (set_id=jasbor) show less	Port Scan
🇫🇷 dwmp	2026-05-27 12:46:29 (1 week ago)	May 27 14:46:28 webcore postfix/smtpd[3966554]: warning: unknown[91.92.241.87]: SASL LOGIN authentic ... show more May 27 14:46:28 webcore postfix/smtpd[3966554]: warning: unknown[91.92.241.87]: SASL LOGIN authentication failed: authentication failure May 27 14:46:28 webcore postfix/smtpd[3966554]: warning: unknown[91.92.241.87]: SASL LOGIN authentication failed: authentication failure May 27 14:46:29 webcore postfix/smtpd[3966554]: warning: unknown[91.92.241.87]: SASL LOGIN authentication failed: authentication failure ... show less	Brute-Force
🇺🇸 ipblock.com	2026-05-27 12:20:00 (1 week ago)	IPBlock protected site ID [3190-sm]. Brute force SMTP/POP/IMAP login attempts	Hacking Brute-Force
🇩🇪 Marc	2026-05-27 09:30:36 (1 week ago)	2026-05-27T11:29:47.402533+02:00 mx1 postfix/submission/smtpd[248119]: NOQUEUE: reject: RCPT from un ... show more 2026-05-27T11:29:47.402533+02:00 mx1 postfix/submission/smtpd[248119]: NOQUEUE: reject: RCPT from unknown[91.92.241.87]: 554 5.7.1 <unknown[91.92.241.87]>: Client host rejected: Access denied; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<QwuR8zn> 2026-05-27T11:30:17.489984+02:00 mx1 postfix/submission/smtpd[248119]: NOQUEUE: reject: RCPT from unknown[91.92.241.87]: 554 5.7.1 <unknown[91.92.241.87]>: Client host rejected: Access denied; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<Me0ZiM> 2026-05-27T11:30:36.063241+02:00 mx1 postfix/submission/smtpd[316663]: NOQUEUE: reject: RCPT from unknown[91.92.241.87]: 554 5.7.1 <unknown[91.92.241.87]>: Client host rejected: Access denied; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<VahyFSuIO> show less	Brute-Force Email Spam
🇩🇪 todix	2026-05-27 09:07:05 (1 week ago)	SASL LOGIN authentication failed on postfix/smtpd from 91.92.241.87	Brute-Force
🇳🇱 JCB	2026-05-27 09:01:00 (1 week ago)	spam	Email Spam
🇬🇧 stom	2026-05-27 09:00:54 (1 week ago)	2026-05-27T09:00:53.344407ls2.tom2.co.uk postfix/smtpd[23854]: NOQUEUE: reject: RCPT from unknown[91 ... show more 2026-05-27T09:00:53.344407ls2.tom2.co.uk postfix/smtpd[23854]: NOQUEUE: reject: RCPT from unknown[91.92.241.87]: 554 5.7.1 <[email protected]>: Relay access denied; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<lNUuIXAu> ... show less	Brute-Force Email Spam
🇩🇪 Bigbear3	2026-05-27 08:04:17 (1 week ago)	Report-by-bigbear3	Brute-Force SSH
🇺🇸 bigwavedave	2026-05-27 07:19:38 (1 week ago)	SMTP	Brute-Force

Showing 211 to 225 of 513 reports

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