121.231.211.12

Recent Activity This IP has received recent abuse reports, which causes the score to increase.
Abuse Confidence Score
100% Critical
189 reports
118 reporters · latest 4 days ago
ISP
CHINANET jiangsu province network
Usage Type
Fixed Line ISP
ASN
AS140293
Domain Name
chinatelecom.cn
Country
🇨🇳 China
City
Nanjing, Jiangsu
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Abuse Reports

Total reports
189 from 118 distinct reporters
First reported
Most recent report
Last 60 days
Top reporter locations 🇩🇪 Germany 43 🇺🇸 United States of America 26 🇫🇷 France 16
Most common categories Brute-Force 164 Email Spam 34 Port Scan 15 Hacking 13 Exploited Host 8
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
🇵🇱 bmino.pl
Autoban IP(2): 121.231.211.12 - Hostname: China Telecom - City: Nanjing - Country: China - Organization: Chinanet JS - Reason: Suspicious activity detected by Fail2ban
Brute-Force
Anonymous
Failed login attempt detected by Fail2Ban in plesk-postfix jail
Brute-Force
🇩🇪 Paul Smith
Email Auth Brute force attack 3/3 in last day
Brute-Force
🇵🇱 bmino.pl
Autoban IP(2): 121.231.211.12 - Hostname: China Telecom - City: Nanjing - Country: China - Organization: Chinanet JS - Reason: Suspicious activity detected by Fail2ban
Brute-Force
🇧🇷 gilneysoares
Agion SOC: password spray / legacy auth (BAV2ROPC) against Microsoft 365 tenant
Brute-Force Email Spam
Anonymous
SMTP brute force - auth failed
Brute-Force Exploited Host
Anonymous
Blocked by firewall on hugin [587/tcp] | Rule: AbuseIPDB | SPT: 35765 | TTL: 52 | LEN: 60 | TOS: 0x00 • Reported by: github.com/sefinek/UFW-AbuseIPDB-Reporter
Port Scan Email Spam
🇦🇷 Honorable
Password spraying contra SMTP AUTH (MailEnable). Cuenta(s) objetivo: [email protected], subdireccionmedica
Brute-Force
Anonymous
SMTP brute force - auth failed
Brute-Force Exploited Host
🇸🇮 basing
2026-11-01 23:25:17 kb SASL PLAIN auth failed: rhost=121.231.211.12...
Brute-Force
🇩🇪 DocNetzwerk
(PERMBLOCK) 121.231.211.12 (CN/China/-) has had more than 3 temp blocks
Hacking
🇮🇩 adi s
2026-11-02T02:17:29.106534+07:00 nice.iptelemedia.id postfix/smtps/smtpd[1362970]: warning: unknown[121.231.211.12]: SASL LOGIN authentication failed: (reason unavailable), sasl_username=wawan ...
Brute-Force Email Spam
Anonymous
SMTP abuse detected on MailEnable server (auto-report).
Email Spam Brute-Force
🇲🇾 theipreport
Brute force attack on SMTP service. Reported by VardynTech (MELogAnalyzer Shield).
Brute-Force
🇹🇭 thaizone.com
Password guessing attack (SM11) #1
Email Spam Brute-Force

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