This IP address has been reported a total of
41
times from
29 distinct
sources.
36.50.74.77 was first reported on
, and the most recent report was
.
In the last 60 days, the top reporter locations were:
Germany
with 4
reports;
United States of America
with 3
reports;
Netherlands
with 2
reports.
The most common categories in these recent reports were:
Email Spam
3
times;
DDoS Attack
3
times;
Port Scan
2
times;
Bad Web Bot
2
times;
Spoofing
1
time;
Other
2
times.
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.
postfix Server DDoS - AUTH drops, early HANGUPs, other DDoS attacks, etc. Might contain brute-force ...
show morepostfix Server DDoS - AUTH drops, early HANGUPs, other DDoS attacks, etc. Might contain brute-force dictionary attack sightings on IMAP and SMTP.
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DDoS Attack
Port Scan
Anonymous
This IP was detected by CrowdSec triggering crowdsecurity/postscreen-rbl
Repeated requests classified as pathological web bot behavior, for example: /search?f%5B0%5D=key_ter ...
show moreRepeated requests classified as pathological web bot behavior, for example: /search?f%5B0%5D=key_terms%3A312&f%5B10%5D=key_terms%3A718&f%5B1%5D=key_terms%3A315&f%5B2%5D=key_terms%3A316&f%5B3%5D=key_terms%3A318&f%5B4%5D=key_terms%3A325&f%5B5%5D=key_terms%3A336&f%5B6%5D=key_terms%3A507&f%5B7%5D=key_terms%3A517&f%5B8%5D=key_terms%3A524&f%5B9%5D=key_terms%3A543 (HTTP/2.0 port 443, user agent: "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36")
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NOQUEUE - IP: 36.50.74.77 - Aug 3 14:39:40 plesk postfix/smtpd[1492224]: NOQUEUE: reject: RCPT from ...
show moreNOQUEUE - IP: 36.50.74.77 - Aug 3 14:39:40 plesk postfix/smtpd[1492224]: NOQUEUE: reject: RCPT from unknown[36.50.74.77]: 554 5.7.1 Service unavailable; Client host [36.50.74.77] blocked using dnsbl-2.uceprotect.net; Net 36.50.74.0/24 is UCEPROTECT-Level2 listed because 4 impacts are seen from AAA-AS-AP Rocket Signal, BD/AS137970 there. See: http://www.uceprotect.net/rblcheck.php?ipr=36.50.74.77; from=<REDACTED@REDACTED> to=<REDACTED@REDACTED> proto=ESMTP helo=<[36.50.74.3]>
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2026-05-20T08:00:00.801084+02:00 mail postfix/smtpd[1667490]: NOQUEUE: reject: RCPT from unknown[36. ...
show more2026-05-20T08:00:00.801084+02:00 mail postfix/smtpd[1667490]: NOQUEUE: reject: RCPT from unknown[36.50.74.77]: 450 4.7.25 Client host rejected: cannot find your hostname, [36.50.74.77]; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<[36.50.74.3]>
2026-05-20T08:00:01.005983+02:00 mail postfix/smtpd[1667490]: lost connection after RCPT from unknown[36.50.74.77]
2026-05-20T08:02:02.176614+02:00 mail postfix/smtpd[1671714]: NOQUEUE: reject: RCPT from unknown[36.50.74.77]: 450 4.7.25 Client host rejected: cannot find your hostname, [36.50.74.77]; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<[36.50.74.3]>
...
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Brute-Force
Email Spam
Anonymous
Botnet-generated fake user-agent with impossible version. UA="Mozilla/5.0 (iPhone; CPU iPhone OS 11_ ...
show moreBotnet-generated fake user-agent with impossible version. UA="Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.6070.1100 Mobile Safar"
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