ABUSE.MOM
THREAT REPORT

IP Threat Report
166.19.88.26

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-09-13 02:31:48
First seen: 2026-08-27 11:42:46
Last seen: 2026-08-30 01:03:38
135

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 135/100. Total malicious requests observed: 96.

DANGER_PATHRATIO_404REDIRECT_PROBE
01

Geolocation & Classification

IP Address
166.19.88.26
Type
Hosting
Country
🇺🇸 United States
City
Roseland
ISP
CoreWeave, Inc
Organization
CoreWeave, Inc
Autonomous System
AS33425 CoreWeave, Inc
Hit Count
96
02

Detection Signatures

SignatureDescriptionPointsSeverity
404 ratio 40-60%Majority of requests returned 404 — enumeration+15
Danger strong hits: 4High-risk paths: shells, RCE vectors, exploits+100
Probe 302→404Behavioral anomaly detected by automated analysis+20
Σ = 135
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

2026-08-27 11:42:46
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
404 ratio 40-60% (+15), Danger strong hits: 4 (+100), Probe 302→404 (+20)
2026-08-30 01:03:38
Last malicious request observed
Total score reached: 135/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
05

Network Provider

CoreWeave, Inc
AS33425 · 🇺🇸 United States
06

Recommendations

Actions taken & recommended

  • IP 166.19.88.26 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 166.19.88.0/24
  • 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 166.19.88.26 is enumerating directories. Configure fail2ban apache-404 jail after 10+ 404 errors. Disable directory listings. Normalize all 404 responses.

07

Neighbors in 166.19.88.0/24

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

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

10

Threat Analysis

166.19.88.26 has been assigned a threat score of 135/100 (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:

Path Enumeration

📊 Threat Analysis

IP address 166.19.88.26 has been traced to Roseland, United States, operating on the network of CoreWeave, Inc. Our threat detection systems have flagged this address based on observed malicious behavior patterns. Over a period of 2 days, this IP generated 96 malicious requests, averaging approximately 48 requests per day. Operating from datacenter infrastructure, this IP is typical of addresses used in organized attack operations. Cloud and VPS providers are commonly exploited as launching platforms for automated scanning. The IP exhibits directory enumeration behavior, systematically requesting non-existent paths to discover hidden files and misconfigured resources. With 111 flagged addresses, United States represents a significant presence in our threat database. At 135/100, this is an extremely high-risk address. All traffic should be considered hostile.

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 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: AS33425

166.19.88.43 (135)166.19.88.47 (125)166.19.88.55 (120)166.19.88.12 (115)166.19.88.33 (95)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.

💡 Patch Management Urgency

The window between vulnerability disclosure and exploitation continues to shrink. Critical CVEs are now exploited within hours of publication. Automated patch management, virtual patching through WAFs, and rapid deployment pipelines are essential for timely remediation.

🔍 Check Any IP Address

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