ABUSE.MOM
THREAT REPORT

IP Threat Report
194.233.91.21

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-07-28 20:36:12
First seen: 2026-07-23 00:16:56
Last seen: 2026-07-26 04:02:16
60

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 60/100. Total malicious requests observed: 95.

DANGER_PATHREFERER
01

Geolocation & Classification

IP Address
194.233.91.21
Type
Residential
Country
🇸🇬 Singapore
City
Singapore
ISP
Contabo Asia Private Limited
Organization
Contabo Asia Private Limited
Autonomous System
AS141995 Contabo Asia Private Limited
Hit Count
95
02

Detection Signatures

SignatureDescriptionPointsSeverity
Danger strong hits: 1High-risk paths: shells, RCE vectors, exploits+25
Danger strong hits: 2High-risk paths: shells, RCE vectors, exploits+50
Foreign refererReferer from unrelated external domain+10
Σ = 85
03

Observed Activity

Reconstructed HTTP requests from server access logs. Target domains redacted for security.

[redacted]
GET
/
200
Requests shown: 1 · HTTP 404: 0 · Dangerous patterns: 0

* Typical request patterns for detected signatures. Actual target domains are redacted.

04

Timeline

2026-07-23 00:16:56
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
Danger strong hits: 1 (+25), Danger strong hits: 2 (+50), Foreign referer (+10)
2026-07-26 04:02:16
Last malicious request observed
Total score reached: 60/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
05

Network Provider

Contabo Asia Private Limited
AS141995 · 🇸🇬 Singapore
06

Recommendations

Actions taken & recommended

  • IP 194.233.91.21 is blocked at application level (HTTP 403)
  • Consider blocking at firewall level (iptables/CSF) to reduce server load
  • Report abuse to the network provider via their abuse contact
  • Ensure sensitive files (.env, .git, backups) are not accessible from the web

⚙️ General Security

Add 194.233.91.21 to your firewall blocklist. Review logs for successful connections. Enable comprehensive logging on all public-facing services.

09

Blacklist Status (DNSBL)

This IP was checked against major DNS-based blacklists used by mail servers and firewalls worldwide.

✓ Clean
bl.blocklist.de
✓ Clean
zen.spamhaus.org
✓ Clean
bl.spamcop.net
✓ Clean
cbl.abuseat.org
✓ Clean
dnsbl.dronebl.org
✓ Clean
b.barracudacentral.org

Checked: Spamhaus, SpamCop, Barracuda, SORBS, CBL, UCEProtect. Results may change over time.

10

Threat Analysis

194.233.91.21 has been assigned a threat score of 60/100 (High). This score indicates high threat severity. The IP has shown clear patterns of malicious behavior that warrant immediate defensive measures.

📊 Threat Analysis

Our monitoring infrastructure has identified 194.233.91.21, geolocated to Singapore, Singapore, operating on the network of Contabo Asia Private Limited, as a source of suspicious network activity. During its 3-day observation window, we recorded 95 hostile requests from this IP — roughly 31.7 per day on average. This is a residential IP address, suggesting a compromised home device such as a router, smart appliance, or infected workstation participating in a botnet. At 60/100, this IP presents a meaningful threat. Implement rate limiting with escalation to blocking.

This IP is classified as residential, suggesting it may belong to a compromised home device, IoT botnet member, or an infected personal computer. Residential IPs involved in attacks often indicate malware infection without the owner's knowledge.

11

Related Threats

🇸🇬 Top threats from Singapore

62.146.238.136 (340)84.247.146.115 (225)217.216.72.40 (100)154.26.133.189 (95)View all →

🏢 Same network: AS141995

62.146.238.136 (340)84.247.146.115 (225)94.136.188.27 (160)147.93.168.73 (110)217.216.72.40 (100)View all →
12

Security Intelligence

💡 SQL Injection Campaigns

SQL injection remains one of the most common web attack vectors. Attackers inject malicious SQL code through input fields to extract database contents, modify data, or gain administrative access. Automated scanners test for SQLi vulnerabilities at massive scale.

💡 Server-Side Template Injection

SSTI occurs when user input is embedded in server-side templates without sanitization. Successful exploitation often leads to remote code execution, as template engines typically have access to powerful server-side functionality.

🔍 Check Any IP Address

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