54.39.210.131📋 Copy

## IP Intelligence Briefing: 54.39.210.131

Classification: Moderate Risk (Score: 40/100)

Date: 2026-06-20

Analyst: IPDebrief Intelligence System

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Executive Summary

IP 54.39.210.131 operates within OVH cloud infrastructure (ASN 16276) with moderate risk characteristics. The IP resolves to ahrefs.net infrastructure, suggesting legitimate SEO tool hosting, though exhibits significant neighborhood-level abuse indicators and geolocation validation anomalies.

---

Infrastructure Profile

Network Identity:

• Provider: OVH SAS
• Organization: Dmytro, Ahrefs Pte Ltd
• Netblock: 54.39.210.0/24 (OVH-CUST-281059686)
• Infrastructure Type: Cloud Compute / Hosting
• Geolocation: Beauharnois, QC, CA (3000km accuracy radius)

DNS Resolution:

• PTR Record: proxy-ca007-san131.ahrefs.net
• Domain: ahrefs.net
• Forward Resolution: Confirmed (1 hostname)
• Email Authentication: SPF/DMARC not configured

Service Status:

• No open ports detected
• No active HTTP/TLS services
• Classification: "Firewalled / No Services"

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Threat Assessment

Risk Indicators:

• Overall Risk Score: 40 (Moderate)
• Abuse Confidence Score: Not applicable
• Known Attacker: No
• Spam Source: No
• Tor Exit Node: No
• DNSBL Listings: 1 of 8 total lists (high severity)

Control Plane Data:

• Route Stability: Unstable
• DNSSEC Valid: Yes
• DNSBL Listed Count: 1
• Operator Score: 0.2174 (Minimal)
• IRR Consistency: Not assessed

Threat Persistence:

• Threat Observation Count: 0
• Persistently Malicious: No
• Campaign Likelihood: None
• Correlated IPs: 0

---

Neighborhood Analysis

Subnet Context (54.39.210.0/24):

• Classification: High Abuse
• Abuse Density: 79.69% (Critical)
• Active Siblings: 177 of 256
• Threat Siblings: 204
• Inherited Risk: 31

Risk Distribution (Sampled 100 neighbors):

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

Interpretation: This IP resides within a heavily abused subnet. The 79.69% abuse density indicates systemic issues with the /24 block. All sampled neighbors rated medium risk, suggesting either coordinated misuse or infrastructure sharing among compromised entities.

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Temporal Intelligence

Observation History (Last 20 signals):

• Abuse Density: Consistently high (0.7969)
• Classification: Persistent "high_abuse" designation
• Geo Validation: Multiple RTT violations detected
• Blacklist Status: Active listings across 8 feeds
• Ownership: No changes recorded

Geolocation Anomalies:

• Claimed location: Beauharnois, QC, CA
• Inferred distance: 5629 km from probe location
• Minimum possible RTT: 112.6ms
• Observed RTT: 25-39ms
• Conclusion: Significant geolocation discrepancy indicates misconfigured geo-records or spoofed location data

---

Relationship Graph

Linked Entities (47 relationships identified):

• Primary relationship: Same network (OVH-CUST-281059686)
• 42 additional same-network relationships
• No external organization or certificate relationships detected
• No correlated campaign matches

---

Recommended Actions

Immediate Mitigation:

```bash

# iptables

iptables -A INPUT -s 54.39.210.131 -j DROP

# nftables

nft add rule inet filter input ip saddr 54.39.210.131 drop

# nginx

deny 54.39.210.131;

# pfSense

54.39.210.131/32

# Cloudflare WAF

{"description": "Block 54.39.210.131 — IPDebrief risk score 40", "action": "block", "filter": {"expression": "ip.src eq 54.39.210.131"}}

# AWS WAF

{"Addresses": ["54.39.210.131/32"], "Description": "IPDebrief risk 40"}

```

Contextual Note: While the IP resolves to ahrefs.net (legitimate SEO analytics provider), the high neighborhood abuse density and blacklist listings warrant defensive blocking. Monitor for service availability issues if this is legitimate infrastructure.

---

Intelligence Assessment

The IP exhibits characteristics of legitimate cloud-hosted infrastructure operating within a high-abuse neighborhood. The 79.69% subnet abuse density suggests systemic infrastructure sharing or abuse patterns within the OVH customer block. The absence of active services and zero threat observation count indicates this may be dormant infrastructure or legitimately hosted services that have not yet triggered threat indicators.

Recommended Monitoring:

• Track DNSBL listing changes
• Monitor for service activation patterns
• Correlate with ahrefs.net known infrastructure
• Assess impact of subnet-level abuse density on operational security

Priority Level: MEDIUM — Block with awareness of potential false positives from legitimate cloud hosting.

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