221.168.252.11

Recent Activity This IP has received recent abuse reports, which causes the score to increase.
Abuse Confidence Score
100% Critical
61 reports
56 reporters · latest 10 hours ago
ISP
Korea Telecom
Usage Type
Fixed Line ISP
ASN
AS4766
Domain Name
kt.com
Country
🇰🇷 Korea (the Republic of)
City
Asan, Chungcheongnam-do
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Abuse Reports

Total reports
61 from 56 distinct reporters
First reported
Most recent report
Last 60 days
Top reporter locations 🇩🇪 Germany 12 🇺🇸 United States of America 9 🇮🇹 Italy 7
Most common categories Brute-Force 56 Email Spam 10 Port Scan 4 Hacking 3 DDoS Attack 2
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
Anonymous
Failed login attempt detected by Fail2Ban in plesk-postfix jail
Brute-Force
🇮🇩 xveil
2026-11-10T21:10:42.786077 mail-honeypot postfix/submission/smtpd[3774]: warning: unknown[221.168.252.11]: SASL LOGIN authentication failed: authentication failure ...
Brute-Force
Anonymous
SMTP brute force - auth failed
Brute-Force Exploited Host
🇺🇸 AEITS
Fail2Ban eMail
Brute-Force
🇸🇮 basing
2026-11-10 14:26:43 bs SASL PLAIN auth failed: rhost=221.168.252.11...
Brute-Force
🇫🇷 Stara
Distributed smtpauth, imapd and ftp login attacks or more than 2 temp blocks in the last 259200 secs
Brute-Force DDoS Attack
🇸🇪 1337v411
2026-11-10 13:56:40 login_server authenticator failed for (89-160-102-76.cust.bredband2.com) [221.168.252.11]: 535 Incorrect authentication data (set_id=<REDACTED>)
Brute-Force
🇩🇪 localhost-admin
Unauthorized connection attempt detected, SMTP Brute-Force
Brute-Force
🇩🇪 yogi70
Multiple failed SMTP logins
Email Spam Brute-Force
Anonymous
Email Auth Brute force attack 3/3 in last day
Brute-Force
🇧🇪 fpoulet
Blocked by Fail2Ban (Postfix BruteForce)
Brute-Force SSH
🇺🇸 Smee
IMAP/SMTP Authentication Failure
Brute-Force
🇮🇹 www.tana.it
SMTP auth dictionary attack
Brute-Force
🇮🇹 Progetto1
Mail - Multiple failed login attempts
Brute-Force Exploited Host
🇩🇪 DAUGDE
Email Spam Spoofing Brute-Force

Think this IP has been falsely reported? You may request to have the associated reports reviewed and removed. Request Takedown

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