54.39.6.15📋 Copy

# IP Intelligence Briefing: 54.39.6.15/32

## Executive Summary

IP address 54.39.6.15 is a moderate-risk (score 40) cloud compute endpoint hosted by OVH (ASN 16276) with ownership attributed to Dmytro, Ahrefs Pte Ltd. The IP resolves to ahrefs.net infrastructure and is located in Beauharnois, Quebec, Canada. While the individual IP shows no active threat indicators, the /24 subnet exhibits high abuse density (0.625) with 160 of 256 sibling IPs classified as threats.

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## Technical Profile

Network Classification

• Provider: OVH (Cloud hosting provider)
• Infrastructure Type: CloudCompute
• Connection Type: Cloud (confirmed)
• Hosting Status: Active hosting infrastructure
• Notable: No CDNs, VPNs, proxies, or Tor exit node indicators detected

Geolocation Data

• Country: Canada (CA)
• Region: Quebec (QC)
• City: Beauharnois
• Geolocation Validation: Inconsistent RTT measurements observed (27.4ms vs. minimum possible 112.6ms for 5,629km distance)
• Geo Plausibility: False per network validation

DNS Resolution

• PTR Hostname: proxy-ca001-san15.ahrefs.net
• Forward Resolution: ahrefs.net
• Certificate Validation: Has CAA records, DNSSEC valid

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## Threat Assessment

Current Risk Indicators

• Risk Score: 40 (Moderate)
• Abuse Confidence: Not flagged as known attacker, spam source, or Tor exit
• Blacklist Status: Not blacklisted
• Known Campaigns: None detected
• Threat Feeds: No active threat indicators

Historical Observations

• Total Observations: 24 signal observations recorded
• Observation Period: Multiple dates from June 18-23, 2026
• Signal Types: Geolocation, DNS, operator scoring, and network profiling
• Trend: No persistent malicious activity detected; threat persistence days: 0

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## Neighborhood Analysis

Subnet: 54.39.6.0/24

• Total Siblings: 256 IPs
• Active Siblings: 174
• Threat Siblings: 160
• Abuse Density: 0.625 (classified as high_abuse)
• Inherited Risk Score: 25

Risk Distribution

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

The subnet shows concentrated medium-to-high risk activity, suggesting this is a hosted infrastructure block with legitimate use but elevated abuse potential.

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## Services & Ports

• Open Ports: None detected
• HTTP Services: No HTTP title or banner detected
• TLS Certificates: None observed
• Service Purpose: Firewalled / No Services

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## Recommended Security Actions

Firewall Rules

The following rules are recommended for implementation based on risk profile:

Implementation Notes

• No specific service-based blocking required; IP-level blocking recommended due to neighborhood abuse density
• Rules should be combined with additional signals before enforcement
• Consider subnet-level analysis (54.39.6.0/24) if traffic patterns warrant broader blocking

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## Intelligence Conclusions

1. Risk Level: Moderate (40/100) – Requires monitoring but does not indicate immediate threat

2. Infrastructure Type: Legitimate cloud hosting (OVH) for ahrefs.net

3. Geographic Anomaly: RTT distance inconsistency suggests possible proxy or routing anomaly

4. Neighborhood Context: High-abuse subnet warrants contextual awareness; individual IP shows no direct threat indicators

5. Recommended Action: Monitor traffic patterns; implement blocking if additional signals correlate with malicious activity

Assessment Date: 2026-06-23

Data Sources: IPDebrief intelligence platform

Classification: Defensive security intelligence

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