ABUSE.MOM
THREAT REPORT

IP Threat Report
104.239.56.56

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-05-27 12:48:55
First seen: 2026-03-31 02:00:07
Last seen: 2026-03-31 02:00:07
90

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 90/100. Total malicious requests observed: 1.

BOT_UAUA_CHANGEDDANGER_PATHRATIO_404
01

Geolocation & Classification

IP Address
104.239.56.56
Type
Residential
Country
🇩🇪 Germany
City
Frankfurt am Main
ISP
1&1 Versatel GmbH
Organization
Fastplanet LTD
Autonomous System
AS8881 1&1 Versatel GmbH
Hit Count
1
02

Detection Signatures

SignatureDescriptionPointsSeverity
UA bot: curlKnown bot/crawler User-Agent detected+40
UA changed for same IPMultiple User-Agents — bot rotation technique+25
Danger medium hits: 1Medium-risk: admin panels, config files+10
404 ratio 40-60%Majority of requests returned 404 — enumeration+15
Σ = 90
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

2026-03-31 02:00:07
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
UA bot: curl (+40), UA changed for same IP (+25), Danger medium hits: 1 (+10)
2026-03-31 02:00:07
Last malicious request observed
Total score reached: 90/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
05

Network Provider

1&1 Versatel GmbH
AS8881 · 🇩🇪 Germany
06

Recommendations

Actions taken & recommended

  • IP 104.239.56.56 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

🤖 Bot Detection

Address UA spoofing from 104.239.56.56: maintain blocklist of known malicious UA strings, require consistent UA across sessions, implement TLS fingerprinting.

🔎 Path Enumeration Protection

Block scanning from 104.239.56.56: rate-limit 404 responses per IP, deploy a honeypot 404 page, ensure no backup files are web-accessible.

09

Blacklist Status (DNSBL)

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

✓ Clean
ix.dnsbl.manitu.net
✓ Clean
zen.spamhaus.org
✓ Clean
dnsbl.sorbs.net
✓ Clean
bl.spamcop.net
✓ Clean
dnsbl-1.uceprotect.net
✓ Clean
b.barracudacentral.org
✓ Clean
truncate.gbudb.net
✓ Clean
psbl.surriel.com

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

10

Threat Analysis

104.239.56.56 has been assigned a threat score of 90/100 (Critical). With this rating, the IP falls into the critical severity bracket — among the most dangerous addresses in our monitoring database.

The following attack categories were identified:

User-Agent AnomalyPath Enumeration

📊 Threat Analysis

Network traffic from 104.239.56.56, located in Frankfurt am Main, Germany, operating on the network of 1&1 Versatel GmbH, has been classified as malicious by our automated threat scoring engine. The address has been active for 1 days in our monitoring system, producing 1 flagged requests at a rate of ~1/day. Operating from a residential network, this IP may represent a compromised home gateway or IoT device that has been drafted into a larger attack infrastructure. Two attack patterns were identified (User-Agent Anomaly and Path Enumeration), suggesting a semi-automated campaign that targets multiple vulnerabilities. With 129 flagged addresses, Germany represents a significant presence in our threat database. At 90/100, this is an extremely high-risk address. All traffic should be considered hostile.

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 Germany

15.220.152.241 (320)77.81.65.244 (313)185.168.29.98 (313)91.217.249.222 (305)212.30.36.219 (305)View all →

🏢 Same network: AS8881

45.39.130.141 (268)104.253.140.120 (245)82.23.88.142 (140)83.135.11.205 (130)166.0.50.137 (105)View all →
12

Security Intelligence

💡 HTTP Header Analysis for Threat Detection

Examining HTTP headers beyond User-Agent reveals attack tools and automated scripts. Missing standard headers, unusual ordering, non-standard values, and inconsistencies with claimed client identity all serve as reliable detection signals.

💡 VPN Exit Node Reputation

VPN exit nodes aggregate traffic from many users, creating mixed reputation profiles. While legitimate users seek privacy, attackers exploit VPN services to anonymize malicious activity, making IP-based blocking of VPN nodes a complex policy decision.

🔍 Check Any IP Address

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