ABUSE.MOM
THREAT REPORT

IP Threat Report
104.28.156.66

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-05-27 14:50:48
First seen: 2026-04-20 02:00:06
Last seen: 2026-05-10 22:00:07
83

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 83/100. Total malicious requests observed: 2.

BURSTREFERERDANGER_PATHRATIO_404METHOD
01

Geolocation & Classification

IP Address
104.28.156.66
Type
Hosting
Country
🇷🇺 Russia
City
Domodedovo
ISP
Cloudflare, Inc.
Organization
Cloudflare WARP
Autonomous System
AS13335 Cloudflare, Inc.
Hit Count
2
02

Detection Signatures

SignatureDescriptionPointsSeverity
Burst: 5 req / 2sAbnormally fast request rate — automated scanning+35
Foreign referer seenReferer from unrelated external domain+10
Danger strong hits: 2High-risk paths: shells, RCE vectors, exploits+50
Danger medium hits: 1Medium-risk: admin panels, config files+10
404 ratio 40-60%Majority of requests returned 404 — enumeration+15
POST requests presentBehavioral anomaly detected by automated analysis+8
Σ = 128
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

2026-04-20 02:00:06
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
Burst: 5 req / 2s (+35), Foreign referer seen (+10), Danger strong hits: 2 (+50)
2026-05-10 22:00:07
Last malicious request observed
Total score reached: 83/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
05

Network Provider

Cloudflare, Inc.
AS13335 · 🇷🇺 Russia
06

Recommendations

Actions taken & recommended

  • IP 104.28.156.66 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 104.28.156.0/24
  • Report abuse to the network provider via their abuse contact
  • Ensure sensitive files (.env, .git, backups) are not accessible from the web

🌊 Traffic Flood Defense

IP 104.28.156.66 is generating excessive traffic. Limit connections per source IP. Enable geographic blocking if traffic from this region is unexpected.

🔎 Path Enumeration Protection

Block scanning from 104.28.156.66: rate-limit 404 responses per IP, deploy a honeypot 404 page, ensure no backup files are web-accessible.

07

Neighbors in 104.28.156.0/24

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.

⛔ LISTED
dnsbl-1.uceprotect.net
✓ Clean
dnsbl.sorbs.net
✓ Clean
ix.dnsbl.manitu.net
✓ Clean
zen.spamhaus.org
✓ Clean
bl.spamcop.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

104.28.156.66 has been assigned a threat score of 83/100 (Critical). A score this high marks a critical threat actor. This address has demonstrated persistent, aggressive malicious behavior across multiple detection vectors.

The following attack categories were identified:

Request FloodingPath Enumeration

📊 Threat Analysis

104.28.156.66 is registered in Domodedovo, Russia, operating on the network of Cloudflare, Inc.. This IP first appeared in our threat feeds after triggering multiple behavioral detection signatures. Our sensors captured 2 malicious requests from this address across a 20-day span, reflecting a sustained attack cadence of ~0.1 requests per day. Classified as a hosting IP, this address likely runs on a rented server or cloud instance. Attackers prefer datacenter IPs for their high bandwidth and disposable nature. The dual attack vectors of Request Flooding combined with Path Enumeration indicate a coordinated assault rather than opportunistic scanning. A threat score of 83/100 places this IP in the high-risk category. Blocking at the firewall level is recommended.

This IP belongs to a hosting or data center provider. Malicious traffic from hosting infrastructure often originates from compromised VPS instances, rented servers used for scanning campaigns, or abused free-tier cloud accounts. Hosting providers typically respond to abuse reports within 24-72 hours.

11

Related Threats

🇷🇺 Top threats from Russia

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🏢 Same network: AS13335

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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.

💡 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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