ABUSE.MOM
THREAT REPORT

IP Threat Report
38.248.91.4

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-10-25 20:20:58
First seen: 2026-10-18 14:21:47
Last seen: 2026-10-25 04:08:28
120

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 120/100. Total malicious requests observed: 1917.

DANGER_PATHRATIO_404REDIRECT_PROBEUA_SUS
01

Geolocation & Classification

IP Address
38.248.91.4
Type
VPN
Country
🇺🇸 United States
City
New York
ISP
Limestone Networks, Inc.
Organization
Limestone Networks
Autonomous System
AS46475 Limestone Networks, Inc.
Hit Count
1917
02

Detection Signatures

SignatureDescriptionPointsSeverity
404 ratio 40-60%Majority of requests returned 404 — enumeration+15
Danger medium hits: 2Medium-risk: admin panels, config files+20
Danger strong hits: 2High-risk paths: shells, RCE vectors, exploits+50
Probe 302→404Behavioral anomaly detected by automated analysis+20
UA suspiciousBehavioral anomaly detected by automated analysis+15
Σ = 120
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

2026-10-18 14:21:47
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
404 ratio 40-60% (+15), Danger medium hits: 2 (+20), Danger strong hits: 2 (+50)
2026-10-25 04:08:28
Last malicious request observed
Total score reached: 120/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
05

Network Provider

Limestone Networks, Inc.
AS46475 · 🇺🇸 United States

We have detected 179 malicious IPs from this autonomous system.

View all IPs from AS46475 →
06

Recommendations

Actions taken & recommended

  • IP 38.248.91.4 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 38.248.91.0/24
  • Report abuse to the network provider via their abuse contact
  • Ensure sensitive files (.env, .git, backups) are not accessible from the web

🔎 Directory Scan Defense

IP 38.248.91.4 is enumerating directories. Configure fail2ban apache-404 jail after 10+ 404 errors. Disable directory listings. Normalize all 404 responses.

🤖 User-Agent Anomaly Defense

IP 38.248.91.4 shows suspicious UA behavior. Block empty User-Agent requests. Implement JavaScript-based bot detection for sensitive endpoints.

07

Neighbors in 38.248.91.0/24

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

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

10

Threat Analysis

38.248.91.4 has been assigned a threat score of 120/100 (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:

Path EnumerationUser-Agent Anomaly

📊 Threat Analysis

The address 38.248.91.4 originates from New York, United States, operating on the network of Limestone Networks, Inc.. It was identified through automated analysis of incoming network traffic across monitored endpoints. During its 6-day observation window, we recorded 1,917 hostile requests from this IP — roughly 319.5 per day on average. The address operates as a VPN/proxy exit node. Attackers route traffic through anonymizing services to obscure their real location and evade IP-based security controls. Two attack patterns were identified (Path Enumeration and User-Agent Anomaly), suggesting a semi-automated campaign that targets multiple vulnerabilities. Our records show 36,294 malicious IPs originating from United States, positioning it as a major contributor to global threat activity. A score of 120/100 places this address in the top tier of severity. Block and investigate any historical connections.

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 United States

104.28.246.115 (350)104.28.214.122 (350)216.73.160.52 (350)34.187.158.4 (340)34.186.187.208 (340)View all →

🏢 Same network: AS46475

45.159.21.231 (268)88.218.45.194 (268)45.159.22.202 (253)194.99.24.160 (245)185.101.21.119 (245)View all →
12

Security Intelligence

💡 Prototype Pollution Attacks

Prototype pollution manipulates JavaScript object prototypes to inject properties that affect all objects in an application. This can lead to denial of service, property injection, and in some cases remote code execution in Node.js applications.

💡 Autonomous System Analysis

Analyzing attack patterns at the AS (Autonomous System) level reveals which networks harbor the most malicious activity. Some ASes have abuse rates orders of magnitude higher than average, indicating lax enforcement of acceptable use policies.

🔍 Check Any IP Address

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