138.59.155.56

Recent Activity This IP has received recent abuse reports, which causes the score to increase.
Abuse Confidence Score
85% Critical
33 reports
20 reporters · latest 3 days ago
ISP
3R INTERNET SOLUCOES EM INFORMATICA LTDA
Usage Type
Fixed Line ISP
ASN
AS268151
Domain Name
3rinternet.com.br
Country
🇧🇷 Brazil
City
Queimados, Rio de Janeiro
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Abuse Reports

Total reports
33 from 20 distinct reporters
First reported
Most recent report
Last 60 days
Top reporter locations 🇬🇧 United Kingdom of Great Britain and Northern Ireland 6 🇮🇹 Italy 5 🇩🇪 Germany 4
Most common categories Brute-Force 21 Exploited Host 4 Port Scan 3 Email Spam 3 Hacking 3
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
🇮🇹 CoreTech srl
Brute-Force
🇩🇪 itak
postfix Server DDoS - AUTH drops, early HANGUPs, other DDoS attacks, etc. Might contain brute-force dictionary attack sightings on IMAP and SMTP.
DDoS Attack Port Scan
🇩🇪 ghostwarriors
Attempts against SMTP/SSMTP
Brute-Force Web App Attack
🇨🇿 lp
Email account brute force: 1 attempts were recorded from 138.59.155.56 2026-11-03T03:05:45+0100 warning: unknown[138.59.155.56]: SASL authentication failed
Brute-Force
Anonymous
SMTP brute force - auth failed
Brute-Force Exploited Host
🇩🇪 EGP Abuse Dept
SMTP AUTH attack
Brute-Force
🇮🇹 CoreTech srl
Brute-Force
🇧🇪 fpoulet
Blocked by Fail2Ban (Postfix BruteForce)
Brute-Force SSH
Anonymous
SMTP brute force - auth failed
Brute-Force Exploited Host
🇨🇦 DidierMX
Wazuh Alert: Exim Auth Failed from 138.59.155.56
Brute-Force Web App Attack
🇸🇮 simpletech.si
LISA - Layered Intelligence & Security Analysis: mail server credential brute-force. 1 failed logins against 1 account(s) on 1 domain(s) via SMTP in the last 24 hours. Blocked at the perimeter firewall.
Brute-Force
🇬🇧 killian7603
Logon Policy Violation
Email Spam Spoofing Brute-Force
🇬🇧 Joe-Mark
Found Repeated Brute-Force and SMTP attacks . proto=tcp . spt=20453 . dpt=587 . NFTABLES .
Port Scan Hacking
🇮🇹 VHosting
Detected mail brute force attack from different servers
Brute-Force
🇳🇱 maxxsense
(postfix-unknown) Failed postfix unknown login with username [redacted] from 138.59.155.56 (BR/Brazil/-)
Hacking

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