103.4.123.18

Recent Activity This IP has received recent abuse reports, which causes the score to increase.
Abuse Confidence Score
100% Critical
164 reports
112 reporters · latest 1 day ago
ISP
SLNET Internet Services
Usage Type
Data Center/Web Hosting/Transit
ASN
AS131316
Domain Name
screwlooseit.com.au
Country
🇦🇺 Australia
City
Melbourne, Victoria
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Abuse Reports

Total reports
164 from 112 distinct reporters
First reported
Most recent report
Last 60 days
Top reporter locations 🇩🇪 Germany 38 🇺🇸 United States of America 20 🇫🇷 France 11
Most common categories Brute-Force 145 Email Spam 26 Hacking 19 Port Scan 15 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
🇫🇮 singertc
Blocked by fail2ban on nospam4.singer-tc.de
Brute-Force Web App Attack
🇩🇪 Paul Smith
Email Auth Brute force attack 1/1 in last day
Brute-Force
🇧🇷 gilneysoares
Agion SOC: password spray / legacy auth (BAV2ROPC) against Microsoft 365 tenant
Brute-Force Email Spam
🇺🇸 lintelcorpo
Yesterday, this IP was the source of 8 failed authentications targeting 8 unique usernames on our Mail Server at 216.21.193.119.
Brute-Force
Anonymous
SMTP brute force - auth failed
Brute-Force Exploited Host
🇬🇧 Marten Mark
Email Spam Brute-Force
🇩🇪 EGP Abuse Dept
SMTP AUTH attack
Brute-Force
🇩🇪 Paul Smith
Email Auth Brute force attack 3/3 in last day
Brute-Force
Anonymous
IMAP brute-force: 1 failed authentication attempt(s) in 24h detected by CRMON security monitor. AbuseIPDB confidence score at block time: 100%.
Brute-Force
🇺🇦 MakselPr
Brute-Force
🇮🇩 adi s
2026-11-11T10:14:14.279166+07:00 nice.iptelemedia.id postfix/submission/smtpd[185599]: warning: unknown[103.4.123.18]: SASL LOGIN authentication failed: (reason unavailable), [email protected] ...
Brute-Force Email Spam
🇧🇪 fpoulet
Blocked by Fail2Ban (Postfix BruteForce)
Brute-Force SSH
🇩🇪 itak
SMTP SASL Brute-Force Attack
Port Scan Hacking Brute-Force
🇲🇾 theipreport
Brute force attack on SMTP service. Reported by VardynTech (MELogAnalyzer Shield).
Brute-Force
🇦🇹 AustrianSimon
11 Nov 2026 00:01:39UTC:Distributed Brute Force Password Attack (smtp, ftp, imap, pop, ssh) including ip address 103.4.123.18
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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