54.39.210.21📋 Copy

# IP INTELLIGENCE BRIEFING: 54.39.210.21/32

Date: 2024-01-15

Classification: Moderate Risk

Source: IPDebrief Intelligence Platform

---

## EXECUTIVE SUMMARY

IP address 54.39.210.21 is a cloud infrastructure endpoint associated with OVH hosting services. The IP presents moderate risk (score: 40/100) with no immediate active threat indicators. However, the subnet exhibits high abuse density (0.668) with 171 out of 256 sibling IPs classified as threats. Investigation recommended for contextual correlation with observed traffic patterns.

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## OWNERSHIP & INFRASTRUCTURE

The IP is registered under an OVH customer allocation (54.39.210.0/24). No DNS reverse resolution confirmed; PTR hostname indicates proxy infrastructure (proxy-ca007-san21.ahrefs.net).

---

## THREAT ASSESSMENT

Current Risk Score: 40 (Moderate)

Threat Indicators:

• Blacklist Count: 0
• Known Attacker: No
• Tor Exit Node: No
• Spam Source: No
• Active Campaigns: None detected

DNSBL Status: 1 listing out of 8 total DNSBLs checked

Geolocation Anomaly: RTT measurements indicate 27ms latency from probe location, yet claimed geographic position (Beauharnois, Canada) would require minimum possible RTT of 112.6ms for 5,629km distance. This discrepancy suggests potential geolocation spoofing or inaccurate registration data.

---

## NEIGHBORHOOD ANALYSIS

Subnet: 54.39.210.0/24

Risk distribution across subnet:

• High Risk: 0 IPs
• Medium Risk: 100 IPs
• Low Risk: 0 IPs

All sampled neighbors in the /24 subnet maintain risk scores between 40-50, indicating consistent moderate risk classification across the allocation.

---

## SERVICES & FINGERPRINT

• Open Ports: None detected
• HTTP Title: None
• TLS Certificate: None
• Server Banner: None
• HTTP2 Support: No
• HSTS/CSP Headers: Not present
• Service Purpose: Firewalled / No Services

The endpoint presents no active web services, consistent with backend infrastructure or firewalled hosting configuration.

---

## OBSERVATION HISTORY

Total Observations: 24 signals recorded

Recent activity concentrated on 2026-06-15 with observations across multiple signal types:

• Cloud/Hosting classification signals
• Subnet abuse density assessments
• RTT/geolocation validation
• Control plane routing data
• Overall reputation dimensions

No persistent malicious behavior observed (threat persistence days: 0).

---

## NETWORK RELATIONSHIPS

41 relationships identified, primarily same-network associations with OVH-CUST-281059686. No cross-organization or certificate-based relationships detected. Control plane shows route stability (isRouteStable: true) with 9,244 days of delegation age.

---

## RECOMMENDED ACTIONS

Blocking Recommendations:

```bash

# iptables

iptables -A INPUT -s 54.39.210.21 -j DROP

# nftables

nft add rule inet filter input ip saddr 54.39.210.21 drop

# nginx

deny 54.39.210.21;

# pfSense

54.39.210.21/32

# Cloudflare WAF

{"description": "Block 54.39.210.21 — IPDebrief risk score 40", "action": "block", "filter": {"expression": "ip.src eq 54.39.210.21"}}

# AWS WAF

{"Addresses":["54.39.210.21/32"], "Description": "IPDebrief risk 40"}

```

Analysis Notes:

• Implement subnet-level blocking (54.39.210.0/24) if traffic patterns warrant due to high abuse density
• Monitor for correlation with known malicious campaigns
• Verify geolocation discrepancy with traffic origin data
• Consider blocking entire /24 if traffic volume exceeds baseline

---

## CONCLUSION

This IP represents moderate risk cloud infrastructure with no immediate active threats. The high abuse density of the parent subnet (0.668) and complete threat classification of all threat siblings (171/256) suggests elevated risk context. Recommended for defensive blocking if observed in inbound traffic, with consideration for subnet-level controls based on observed traffic patterns.

Analyst Notes: Geolocation validation discrepancies warrant investigation. Monitor for service activation or configuration changes.

This summary was generated by AI and may contain inaccuracies. Verify critical details independently.