ABUSE.MOM
THREAT REPORT

IP Threat Report
104.28.229.15

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-09-13 01:26:38
First seen: 2026-08-08 05:21:14
Last seen: 2026-09-06 01:06:12
220

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 220/100. Total malicious requests observed: 1348.

BURSTDANGER_PATHRATIO_404REFERERUA_CHANGEDUA_SUS
01

Geolocation & Classification

IP Address
104.28.229.15
Type
VPN
Country
🇩🇪 Germany
City
Frankfurt am Main
ISP
Cloudflare, Inc.
Organization
Cloudflare WARP
Autonomous System
AS13335 Cloudflare, Inc.
Hit Count
1348
02

Detection Signatures

SignatureDescriptionPointsSeverity
404 ratio 40-60%Majority of requests returned 404 — enumeration+15
404 ratio >= 60%Majority of requests returned 404 — enumeration+25
Burst 14/10sAbnormally fast request rate — automated scanning+35
Burst 14/2sAbnormally fast request rate — automated scanning+35
Burst 15/10sAbnormally fast request rate — automated scanning+35
Burst 15/2sAbnormally fast request rate — automated scanning+35
Burst 21/10sAbnormally fast request rate — automated scanning+35
Burst 21/2sAbnormally fast request rate — automated scanning+35
Burst 6/2sAbnormally fast request rate — automated scanning+35
Danger medium hits: 1Medium-risk: admin panels, config files+10
Danger strong hits: 1High-risk paths: shells, RCE vectors, exploits+25
Danger strong hits: 2High-risk paths: shells, RCE vectors, exploits+50
Danger strong hits: 3High-risk paths: shells, RCE vectors, exploits+75
Danger strong hits: 4High-risk paths: shells, RCE vectors, exploits+100
Danger strong hits: 5High-risk paths: shells, RCE vectors, exploits+100
Danger strong hits: 8High-risk paths: shells, RCE vectors, exploits+100
Foreign refererReferer from unrelated external domain+10
UA changedMultiple User-Agents — bot rotation technique+25
UA suspiciousBehavioral anomaly detected by automated analysis+15
Σ = 795
03

Observed Activity

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

[redacted]
GET
/
200
[redacted]
GET
/page
200
Requests shown: 2 · HTTP 404: 0 · Dangerous patterns: 0

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

04

Timeline

2026-08-08 05:21:14
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
404 ratio 40-60% (+15), 404 ratio >= 60% (+25), Burst 14/10s (+35)
2026-09-06 01:06:12
Last malicious request observed
Total score reached: 220/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
05

Network Provider

Cloudflare, Inc.
AS13335 · 🇩🇪 Germany
06

Recommendations

Actions taken & recommended

  • IP 104.28.229.15 is blocked at application level (HTTP 403)
  • Consider blocking at firewall level (iptables/CSF) to reduce server load
  • Other malicious IPs detected in the same /24 subnet — consider blocking 104.28.229.0/24
  • Report abuse to the network provider via their abuse contact
  • Ensure sensitive files (.env, .git, backups) are not accessible from the web

🔎 Path Enumeration Protection

Block scanning from 104.28.229.15: rate-limit 404 responses per IP, deploy a honeypot 404 page, ensure no backup files are web-accessible.

🌊 Traffic Flood Defense

IP 104.28.229.15 is generating excessive traffic. Limit connections per source IP. Enable geographic blocking if traffic from this region is unexpected.

🤖 User-Agent Anomaly Defense

IP 104.28.229.15 shows suspicious UA behavior. Block empty User-Agent requests. Implement JavaScript-based bot detection for sensitive endpoints.

07

Neighbors in 104.28.229.0/24

Other blocked IPs from the same /24 subnet — indicates systematic abuse from this network range.

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
spam.dnsbl.sorbs.net
✓ Clean
zen.spamhaus.org
✓ Clean
cbl.abuseat.org
✓ Clean
dnsbl.dronebl.org
✓ Clean
b.barracudacentral.org
✓ Clean
psbl.surriel.com

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

10

Threat Analysis

104.28.229.15 has been assigned a threat score of 220/100 (Critical). This is a critical-level threat. Systems administrators should treat this IP as hostile and block all inbound connections without exception.

The following attack categories were identified:

Path EnumerationRequest FloodingUser-Agent Anomaly

📊 Threat Analysis

IP address 104.28.229.15 has been traced to Frankfurt am Main, Germany, operating on the network of Cloudflare, Inc.. Our threat detection systems have flagged this address based on observed malicious behavior patterns. Our sensors captured 1,348 malicious requests from this address across a 28-day span, reflecting a sustained attack cadence of ~48.1 requests per day. Classified as a VPN or proxy server, this IP serves as an anonymization layer. While VPNs have legitimate uses, this address has been observed routing clearly malicious traffic. With 3 different attack patterns detected, this IP exhibits behavior characteristic of advanced automated scanning frameworks. Our records show 12 malicious IPs originating from Germany, positioning it as a notable contributor to global threat activity. At 220/100, this is an extremely high-risk address. All traffic should be considered hostile.

This IP is associated with a VPN or proxy service. Attackers frequently route their traffic through anonymizing services to obscure their true location. This makes attribution more challenging but the malicious behavior patterns remain detectable.

11

Related Threats

🇩🇪 Top threats from Germany

104.28.197.14 (248)104.28.229.17 (248)104.28.197.15 (238)104.28.164.225 (220)104.28.229.13 (220)View all →

🏢 Same network: AS13335

104.28.192.67 (340)104.28.240.58 (305)104.28.205.84 (298)104.28.217.137 (298)104.28.234.181 (288)View all →
12

Security Intelligence

💡 DDoS Mitigation Approaches

Distributed denial of service attacks overwhelm infrastructure with traffic volume. Effective mitigation combines always-on traffic scrubbing, anycast network distribution, rate limiting, and the ability to quickly scale absorption capacity during attacks.

💡 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.

🔍 Check Any IP Address

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