54.39.210.85📋 Copy

# IP Intelligence Briefing: 54.39.210.85/32

Classification: Moderate Risk | Date: June 2026 | Data Source: IPDebrief

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## Executive Summary

IP address 54.39.210.85 is a cloud-based infrastructure endpoint hosted on OVH infrastructure within a high-abuse subnet (54.39.210.0/24). The IP carries a moderate risk score of 40/100 and resolves to the ahrefs.net domain namespace. No direct malicious activity indicators were observed, but the IP operates within a subnet exhibiting 79.3% abuse density and 203 identified threat siblings.

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## Technical Profile

Network Identity:

• ASN: 16276 (OVH)
• Organization: Dmytro, Ahrefs Pte Ltd
• Network Block: 54.39.210.0/24
• Infrastructure Type: CloudCompute / Hosting
• Status: Firewall/No Services detected

Geolocation:

• Country: Canada (CA)
• Region: Quebec (QC)
• City: Beauharnois
• Geolocation Confidence: Low (3,000km accuracy radius)

DNS Resolution:

• PTR Hostnames: proxy-ca007-san85.ahrefs.net
• Domain: ahrefs.net
• Forward Resolution: Confirmed (1 hostname)

Control Plane:

• BGP Prefix: 54.39.0.0/16
• Operator Score: 0.4348 (Basic)
• Route Stability: Stable (0 route changes in 30 days)
• DNSSEC: Valid
• DNSBL Listed: 1 of 8 total lists

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## Threat Assessment

Risk Score: 40/100 (Moderate)

Direct Threat Indicators:

• No Tor exit node activity
• No known attacker designation
• No spam source classification
• Zero direct blacklist entries
• No active threat campaigns correlated

Contextual Risk Factors:

• Operates within high-abuse subnet (54.39.210.0/24)
• Subnet abuse density: 79.3%
• 203 threat siblings identified among 256 total IPs
• Inherited risk score from neighborhood: 31/100
• All 100 sampled neighbor IPs show identical risk scoring (40/100)

Historical Observations: 21 observations collected

• Consistent abuse density reporting (0.793) across observation window
• Network role consistently classified as Cloud/Hosting
• Routing operator score maintained at "Basic" level

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## Infrastructure Relationships

Network Affiliations: 39 identified relationships

• Primary association: OVH-CUST-281059686 network
• Multiple same-network relationship entries indicating infrastructure clustering
• No external entity relationships detected beyond network infrastructure

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## Recommended Actions

Firewall/Network Rules:

1. Monitor traffic to/from 54.39.210.0/24 subnet due to high abuse density

2. Implement rate limiting for connections to ahrefs.net namespace

3. Flag outbound connections from internal systems to this IP for SIEM correlation

Investigation Priorities:

• Correlate with any observed suspicious outbound traffic to 54.39.0.0/16 BGP prefix
• Review historical connections to identify patterns with threat siblings in same subnet
• Monitor for DNS query patterns to proxy-ca007-san85.ahrefs.net hostname

Risk Mitigation:

• Consider blocking or allowing based on traffic analysis given moderate risk classification
• Monitor for changes in threat indicators over time using observation history

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Analyst Notes: This IP represents legitimate cloud infrastructure but operates in a high-abuse environment. The moderate risk score reflects contextual subnet risk rather than direct malicious activity. SOC teams should monitor for anomalous traffic patterns while maintaining awareness of neighborhood-level threat activity.

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