ABUSE.MOM
THREAT REPORT

IP Threat Report
168.138.172.235

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-05-30 08:53:41
First seen: 2026-04-25 03:00:12
Last seen: 2026-05-18 08:00:07
210

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 210/100. Total malicious requests observed: 120.

BOT_UADANGER_PATHBURST
01

Geolocation & Classification

IP Address
168.138.172.235
Type
Hosting
Country
🇸🇬 Singapore
City
Singapore
ISP
Oracle Corporation
Organization
Oracle Public Cloud
Autonomous System
AS31898 Oracle Corporation
Hit Count
120
02

Detection Signatures

SignatureDescriptionPointsSeverity
UA bot: scannerKnown bot/crawler User-Agent detected+40
Danger strong hits: 12High-risk paths: shells, RCE vectors, exploits+100
Burst: 12 req / 2sAbnormally fast request rate — automated scanning+35
Burst: 18 req / 10sAbnormally fast request rate — automated scanning+35
Σ = 210
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

2026-04-25 03:00:12
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
UA bot: scanner (+40), Danger strong hits: 12 (+100), Burst: 12 req / 2s (+35)
2026-05-18 08:00:07
Last malicious request observed
Total score reached: 210/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
05

Network Provider

Oracle Corporation
AS31898 · 🇸🇬 Singapore
06

Recommendations

Actions taken & recommended

  • IP 168.138.172.235 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 168.138.172.235: maintain blocklist of known malicious UA strings, require consistent UA across sessions, implement TLS fingerprinting.

🌊 Flood / DDoS Mitigation

Implement limit_req_zone in nginx. Deploy CDN with DDoS protection. Configure SYN cookies and connection tracking to throttle 168.138.172.235.

09

Blacklist Status (DNSBL)

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

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

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

10

Threat Analysis

168.138.172.235 has been assigned a threat score of 210/100 (Critical). This represents a critical risk level. Our detection systems have flagged multiple high-confidence indicators of malicious intent from this address.

The following attack categories were identified:

User-Agent AnomalyRequest Flooding

📊 Threat Analysis

IP address 168.138.172.235 has been traced to Singapore, Singapore, operating on the network of Oracle Corporation. Our threat detection systems have flagged this address based on observed malicious behavior patterns. Over a period of 23 days, this IP generated 120 malicious requests, averaging approximately 5.2 requests per day. This address belongs to a datacenter or cloud hosting provider. Hosting IPs are frequently leveraged by threat actors who rent cheap VPS instances specifically for conducting attacks. The dual attack vectors of User-Agent Anomaly combined with Request Flooding indicate a coordinated assault rather than opportunistic scanning. With 125 flagged addresses, Singapore represents a significant presence in our threat database. With a threat score of 210/100, this IP is among the most dangerous addresses in our database. Immediate and complete blocking is strongly 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 Singapore

85.203.23.12 (340)85.203.23.31 (330)84.17.39.195 (325)192.166.246.30 (325)85.203.21.101 (320)View all →

🏢 Same network: AS31898

217.142.185.108 (310)158.178.231.159 (300)161.118.211.239 (300)147.15.149.40 (300)148.116.72.171 (300)View all →
12

Security Intelligence

💡 TLS Fingerprinting (JA3/JA4)

TLS fingerprinting creates unique identifiers based on how clients negotiate encrypted connections. The JA3 and JA4 methods generate hashes from TLS ClientHello parameters, enabling identification of specific tools and malware regardless of IP address changes.

💡 Residential Proxy Networks

Residential proxies route traffic through real home internet connections, making malicious traffic appear to come from legitimate users. Some networks install proxy software bundled with free applications, unknowingly conscripting millions of devices.

🔍 Check Any IP Address

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