223.198.166.4

Recent Activity This IP has received recent abuse reports, which causes the score to increase.
Abuse Confidence Score
100% Critical
41 reports
38 reporters · latest 1 day ago
ISP
CHINANET HAINAN PROVINCE NETWORK
Usage Type
Fixed Line ISP
ASN
AS4134
Domain Name
chinatelecom.cn
Country
🇨🇳 China
City
Haikou, Hainan
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Abuse Reports

Total reports
41 from 38 distinct reporters
First reported
Most recent report
Last 60 days
Top reporter locations 🇩🇪 Germany 11 🇮🇹 Italy 4 🇺🇸 United States of America 4
Most common categories Brute-Force 34 SSH 8 Port Scan 4 Exploited Host 2 Bad Web Bot 1
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
Anonymous
Knocking on port 22 (endlessh-go)
SSH
🇧🇷 ICS Labs
ICS Labs threat intelligence (ICS Feeds): Brute-Force, Exploited Host. Last observed 2026-11-04 UTC.
Brute-Force Exploited Host
🇳🇿 andkiwi
Unauthorised attempted login to Submission server
Brute-Force
Anonymous
SMTP AUTH 223.198.166.4 (SMTP_LOGIN_ATTEMPT)
Brute-Force
🇦🇺 FSB.ru - Is it?
Attempted login to non-existant accounts
Brute-Force
Anonymous
Nov 3 19:06:15 m postfix/smtpd[98118]: warning: unknown[223.198.166.4]: SASL PLAIN authentication failed: (reason unavailable), [email protected] ...
Brute-Force
Anonymous
This IP was detected by CrowdSec triggering local/postfix-sasl-persistent-brute
Email Spam Brute-Force
🇧🇷 radardatelecom
Blocked by Radar da Telecom firewall — abuseipdb
Bad Web Bot Web App Attack
Anonymous
Blocked by ModSec and CSF
Port Scan
🇺🇸 [email protected]
1 unauthorized SSH login attempt; seen 2026-11-03 (UTC)
Brute-Force SSH
🇩🇪 chris_yooo
Spoofing Brute-Force
Anonymous
SSH Brute Force (3 attempts). Evidence: sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=223.198.166.4;sshd-session[8688]: Failed password for invalid user unknown from 223.198.166.4 port 27502 ssh2
Brute-Force SSH
🇩🇪 dn-systems.net
Brute-Force
Anonymous
Brute Force User Attack SMTP
Brute-Force

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