This IP address has been reported a total of
15
times from
13 distinct
sources.
193.239.154.74 was first reported on
, and the most recent report was
.
Old Reports:
The most recent abuse report for this IP address is from
. It is possible that this IP is no longer involved in abusive activities.
NOQUEUE - IP: 193.239.154.74 - May 31 03:10:30 plesk postfix/smtpd[176957]: NOQUEUE: reject: RCPT f ...
show moreNOQUEUE - IP: 193.239.154.74 - May 31 03:10:30 plesk postfix/smtpd[176957]: NOQUEUE: reject: RCPT from unknown[193.239.154.74]: 554 5.7.1 Service unavailable; Client host [193.239.154.74] blocked using dnsbl-1.uceprotect.net; IP 193.239.154.74 is UCEPROTECT-Level 1 listed. See http://www.uceprotect.net/rblcheck.php?ipr=193.239.154.74; from=<[email protected]> to=<REDACTED@REDACTED> proto=ESMTP helo=<ae90848-okinawa566.okinawa.u-net.or.jp>
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Source of spoofed email forging From: @atsoho.com domain. Observed via aggregated DMARC RUA reports. ...
show moreSource 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.
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Nov 22 09:09:53 server postfix/smtpd[3388836]: connect from unknown[193.239.154.74]
Nov 22 09:09:53 ...
show moreNov 22 09:09:53 server postfix/smtpd[3388836]: connect from unknown[193.239.154.74]
Nov 22 09:09:53 server postfix/smtpd[3388836]: NOQUEUE: reject: RCPT from unknown[193.239.154.74]: 554 5.7.1 Service unavailable; Client host [193.239.154.74] blocked using zen.spamhaus.org; Listed by DROP, see https://check.spamhaus.org/sbl/query/SBL520298 / Listed by CSS, see https://check.spamhaus.org/query/ip/193.239.154.74 / Listed by XBL, see https://check.spamhaus.org/query/ip/193.239.154.74 / Listed by SBL, see https://check.spamhaus.org/sbl/query/SBL520298; from=<> to=<[email protected]> proto=ESMTP helo=<C202511200080348.local>
...
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Nov 21 19:02:16 server postfix/smtpd[3210386]: connect from unknown[193.239.154.74]
Nov 21 19:02:17 ...
show moreNov 21 19:02:16 server postfix/smtpd[3210386]: connect from unknown[193.239.154.74]
Nov 21 19:02:17 server postfix/smtpd[3210386]: NOQUEUE: reject: RCPT from unknown[193.239.154.74]: 554 5.7.1 Service unavailable; Client host [193.239.154.74] blocked using zen.spamhaus.org; 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/193.239.154.74 / Listed by XBL, see https://check.spamhaus.org/query/ip/193.239.154.74; from=<> to=<[email protected]> proto=ESMTP helo=<C202511200080348.local>
...
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Email Spam
Anonymous
SMTP scanner - relay access denied
Brute-Force
Exploited Host
Showing 1 to
15
of 15 reports
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