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AbuseIPDB » 193.239.154.100

193.239.154.100 was found in our database!

This IP was reported 14 times. Confidence of Abuse is 20%: ?

20%

ISP	HDTIDC LIMITED
Usage Type	Data Center/Web Hosting/Transit
ASN	AS136038
Domain Name	f57.net
Country	🇭🇰 Hong Kong
City	Tung Chung, Islands

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

Report 193.239.154.100

Whois 193.239.154.100

IP Abuse Reports for 193.239.154.100:

This IP address has been reported a total of 14 times from 9 distinct sources. 193.239.154.100 was first reported on May 24th 2023, and the most recent report was 4 weeks ago.

Old Reports: The most recent abuse report for this IP address is from 4 weeks ago . It is possible that this IP is no longer involved in abusive activities.

Reporter	IoA Timestamp (UTC)	Comment	Categories
🇫🇷 AHr	2026-06-01 05:59:31 (4 weeks ago)	SPAM	Email Spam
🇪🇸 librebit	2026-05-31 03:58:59 (4 weeks ago)	Listed IP in blacklist by postfix/dnsblog	Spoofing
🇩🇪 initsol	2026-05-30 03:11:08 (4 weeks ago)	May 30 02:18:50 phoenix postfix/smtpd[1464254]: NOQUEUE: reject: RCPT from unknown[193.239.154.100]: ... show more May 30 02:18:50 phoenix postfix/smtpd[1464254]: NOQUEUE: reject: RCPT from unknown[193.239.154.100]: 450 4.7.1 <om57803-gunma589.gunma.bbtec.net>: Helo command rejected: Host not found; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<om57803-gunma589.gunma.bbtec.net> May 30 03:44:41 phoenix postfix/smtpd[1467789]: NOQUEUE: reject: RCPT from unknown[193.239.154.100]: 450 4.7.1 <om57803-gunma589.gunma.bbtec.net>: Helo command rejected: Host not found; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<om57803-gunma589.gunma.bbtec.net> May 30 05:11:08 phoenix postfix/smtpd[1471196]: NOQUEUE: reject: RCPT from unknown[193.239.154.100]: 450 4.7.1 <om57803-gunma589.gunma.bbtec.net>: Helo command rejected: Host not found; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<om57803-gunma589.gunma.bbtec.net> ... show less	Brute-Force
🇩🇪 initsol	2026-05-29 20:00:27 (1 month ago)	May 29 19:05:06 phoenix postfix/smtpd[1445287]: NOQUEUE: reject: RCPT from unknown[193.239.154.100]: ... show more May 29 19:05:06 phoenix postfix/smtpd[1445287]: NOQUEUE: reject: RCPT from unknown[193.239.154.100]: 450 4.7.1 <om57803-gunma589.gunma.bbtec.net>: Helo command rejected: Host not found; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<om57803-gunma589.gunma.bbtec.net> May 29 20:34:45 phoenix postfix/smtpd[1449089]: NOQUEUE: reject: RCPT from unknown[193.239.154.100]: 450 4.7.1 <om57803-gunma589.gunma.bbtec.net>: Helo command rejected: Host not found; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<om57803-gunma589.gunma.bbtec.net> May 29 22:00:26 phoenix postfix/smtpd[1452770]: NOQUEUE: reject: RCPT from unknown[193.239.154.100]: 450 4.7.1 <om57803-gunma589.gunma.bbtec.net>: Helo command rejected: Host not found; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<om57803-gunma589.gunma.bbtec.net> ... show less	Brute-Force
🇩🇪 initsol	2026-05-29 12:36:29 (1 month ago)	May 29 12:48:17 phoenix postfix/smtpd[1428689]: NOQUEUE: reject: RCPT from unknown[193.239.154.100]: ... show more May 29 12:48:17 phoenix postfix/smtpd[1428689]: NOQUEUE: reject: RCPT from unknown[193.239.154.100]: 450 4.7.1 <om57803-gunma589.gunma.bbtec.net>: Helo command rejected: Host not found; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<om57803-gunma589.gunma.bbtec.net> May 29 13:19:56 phoenix postfix/smtpd[1429987]: NOQUEUE: reject: RCPT from unknown[193.239.154.100]: 450 4.7.1 <om57803-gunma589.gunma.bbtec.net>: Helo command rejected: Host not found; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<om57803-gunma589.gunma.bbtec.net> May 29 14:36:29 phoenix postfix/smtpd[1432298]: NOQUEUE: reject: RCPT from unknown[193.239.154.100]: 450 4.7.1 <om57803-gunma589.gunma.bbtec.net>: Helo command rejected: Host not found; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<om57803-gunma589.gunma.bbtec.net> ... show less	Brute-Force
🇯🇵 hirajo	2026-05-28 14:08:32 (1 month ago)	Source of spoofed email forging From: @atsoho.com domain. Observed via aggregated DMARC RUA reports. ... show more Source of spoofed email forging From: @atsoho.com domain. Observed via aggregated DMARC RUA reports. Between 2026-05-13 and 2026-05-17, this IP and 250+ neighbors in 193.239.154.0/24 (AS136038 HDTIDC LIMITED / AS136526 ALLCLOUD LIMITED) sent over 11,000 spoofed emails forging the From header as our domain "atsoho.com". All messages fail SPF and DKIM authentication against atsoho.com (DMARC enforced: p=quarantine). Legitimate atsoho.com mail is sent exclusively from Google Workspace, SocketLabs, and XServer. Reporting receivers (sample): Mail.Ru, Microsoft (Enterprise Outlook), seznam.cz, JCOM, au.com, Yahoo, GMO Pepabo, GMO Internet. WHOIS abuse-mailbox ([email protected]) is non-functional (550 5.1.1 rejection). APNIC and RIPE NCC have been notified of the invalid abuse contact. show less	Phishing Email Spam Spoofing
🇪🇸 librebit	2026-05-17 08:01:24 (1 month ago)	Listed IP in blacklist by postfix/dnsblog	Spoofing
🇷🇸 Smel	2026-05-11 09:04:08 (1 month ago)	Mail/25/465/587-993/995 Probe, Reject, BadAuth, Hack, SPAM -	Email Spam Hacking Brute-Force
🇪🇸 librebit	2025-12-03 21:39:06 (6 months ago)	Listed IP in blacklist by postfix/dnsblog	Spoofing
Anonymous	2025-11-27 22:53:00 (7 months ago)	Amazonを騙るメール f202511271753 https://xosocity.top/	Phishing
🇸🇮 dsmidge	2025-11-22 06:15:53 (7 months ago)	Nov 22 07:15:52 server postfix/smtpd[3364619]: connect from unknown[193.239.154.100] Nov 22 07:15:53 ... show more Nov 22 07:15:52 server postfix/smtpd[3364619]: connect from unknown[193.239.154.100] Nov 22 07:15:53 server postfix/smtpd[3364619]: NOQUEUE: reject: RCPT from unknown[193.239.154.100]: 554 5.7.1 Service unavailable; Client host [193.239.154.100] blocked using zen.spamhaus.org; Listed by XBL, see https://check.spamhaus.org/query/ip/193.239.154.100 / Listed by SBL, see https://check.spamhaus.org/sbl/query/SBL520298 / Listed by DROP, see https://check.spamhaus.org/sbl/query/SBL520298 / Listed by CSS, see https://check.spamhaus.org/query/ip/193.239.154.100; from=<> to=<[email protected]> proto=ESMTP helo=<C202511200046297.local> ... show less	Email Spam
🇳🇱 Cloud86 B.V.	2025-11-20 07:45:04 (7 months ago)	Email spam	Email Spam
Anonymous	2025-08-28 16:44:00 (10 months ago)	appleを騙るメールｆ202508282303 https://9f-5d-7q-2c-8x-tyc00887.shop/	Phishing
🇯🇵 stfw	2023-05-24 16:23:57 (3 years ago)	3389/tcp [2023-05-24]1pkt	Port Scan

Showing 1 to 14 of 14 reports

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