54.39.210.142📋 Copy

# IP Intelligence Briefing: 54.39.210.142

Classification: Moderate Risk | Risk Score: 40 | Date of Analysis: 2026-06-20

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## Executive Summary

IP 54.39.210.142 is an OVH-hosted endpoint associated with Ahrefs infrastructure (ahrefs.net). The IP operates within a high-abuse-density subnet (54.39.210.0/24) with 79.3% abuse classification. While the DNS resolution points to legitimate Ahrefs infrastructure, the subnet exhibits elevated risk characteristics requiring monitoring.

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## Infrastructure Profile

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## Threat Indicators

• Abuse Confidence: Subnet-level abuse density: 0.793 (high_abuse classification)
• DNSBL Status: Listed on 1 of 8 threat feeds
• Blacklist Count: 0 direct blacklists
• Known Attacker: No
• Spam Source: No
• Tor Exit Node: No

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## Neighborhood Analysis (54.39.210.0/24)

• Total Subnet Size: 256 addresses
• Active Siblings: 174
• Threat Siblings: 203
• Abuse Density: 0.793 (high)
• Inherited Risk Score: 31
• Risk Distribution: 100 medium-risk IPs observed in sample

The subnet exhibits concentrated risk with over 78% of active IPs classified as medium-to-high risk, indicating a hosting environment with elevated abuse potential.

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## Observation History

Total observations: 19 signals captured through 2026-06-20. Key temporal indicators:

• Abuse Density: Consistently high (0.793) across multiple observations
• Geolocation: Confirmed Canada (CA) with moderate confidence (0.175)
• Operator Score: Minimal (0.25 raw score, 0.2174 computed)
• Domain Resolution: ahrefs.net confirmed with CAA records present
• Threat Persistence: No persistent malicious behavior observed (0 threat persistence days)

The IP demonstrates stability in ownership and network classification over the observation period.

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## Relationship Graph

• Total Relationships: 44
• Primary Association: OVH-CUST-281059686 (same network)
• Network Classification: All relationships indicate same-network hosting infrastructure

The IP is deeply embedded within a larger OVH customer network footprint.

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## Security Recommendations

1. Monitor Subnet Activity: The high abuse density (0.793) requires heightened monitoring of related IPs in 54.39.210.0/24.

2. Traffic Analysis: Since the IP is firewalled with no open services, focus on inbound traffic patterns and connection attempts rather than service-specific indicators.

3. DNS Monitoring: The PTR hostname (proxy-ca007-san142.ahrefs.net) should be monitored for anomalous reverse DNS changes or additional hostnames.

4. Geo-Location Verification: The reported location (Beaucharnois, QC) has a 3000km accuracy radius. Verify actual traffic origin against expected geolocation for your use case.

5. Blacklist Correlation: Monitor for additional DNSBL listings as they may emerge.

6. Contextual Assessment: Given the Ahrefs association, evaluate whether this IP falls within expected operational ranges for your organization's relationship with Ahrefs services.

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## SOC Action Items

• [ ] Review firewall rules for this subnet based on observed threat patterns
• [ ] Correlate with any known Ahrefs operational IP ranges
• [ ] Monitor for DNSBL additions over next 30 days
• [ ] Evaluate if traffic patterns match expected Ahrefs service behavior
• [ ] Document findings in internal threat intelligence repository

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Generated by: IPDebrief Intelligence Platform

Status: Active Monitoring Recommended

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