54.39.89.251📋 Copy

# IP INTELLIGENCE BRIEFING: 54.39.89.251/32

Classification: Moderate Risk Cloud Infrastructure | Data Freshness: Recent (2026-06-28)

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## EXECUTIVE SUMMARY

IP 54.39.89.251 is a cloud-compute infrastructure address hosted within OVH hosting infrastructure. The IP resolves to the Ahrefs domain (ahrefs.net) and carries a moderate risk score of 40. While the IP itself shows no active threat indicators, the /24 subnet exhibits high abuse density (0.8125), indicating systemic risk within the broader network block.

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## OWNERSHIP & NETWORK CONTEXT

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## THREAT ASSESSMENT

Current Risk Profile

• Overall Risk Score: 40 (Moderate Risk)
• Abuse Confidence Score: Not reported
• Known Attacker: No
• Spam Source: No
• Tor Exit Node: No
• Blacklist Count: 0
• DNSBL Listed: 1 out of 8 total lists

DNS & Reputation Signals

• PTR Hostname: proxy-ca012-san251.ahrefs.net
• Domain: ahrefs.net
• Forward Resolution: Confirmed (1 hostname)
• Email Authentication: No SPF, No DMARC records detected
• HTTP Services: None detected (firewalled/no services)
• TLS Certificates: None

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## NEIGHBORHOOD ANALYSIS

The /24 subnet (54.39.89.0/24) demonstrates elevated risk characteristics:

Risk Distribution in /24:

• High Risk: 0 IPs
• Medium Risk: 100 IPs
• Low Risk: 0 IPs (all sampled neighbors show Risk Score 40, Authority Score 50)

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## OBSERVATION HISTORY

The IP has been observed over 20 times, with signals from June 2026 timeframe. Key temporal observations:

• Ownership Stability: 0 ownership changes recorded
• Threat Persistence: 0 days (not persistently malicious)
• Threat Observation Count: 1
• Operator Score: 0.2174 (Minimal)
• GeoValidation: RTT 32.0ms vs minimum possible 112.6ms for 5,629km distance — indicates possible geo-misattribution or measurement anomaly

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## NETWORK CONTROLS & CLASSIFICATION

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## RELATIONSHIP GRAPH

Total Relationships: 38

Primary relationship type: Same Network (OVH-CUST-281059691) — 33+ instances. The IP is tightly associated with the OVH customer network block.

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## SOC ACTIONABLE INTELLIGENCE

Risk Indicators

• No direct threat indicators on this specific IP
• High subnet abuse density suggests potential for compromised neighbors
• DNSBL listing on 1 of 8 lists indicates minor reputation issues
• Geovalidation anomaly (RTT vs distance mismatch) warrants monitoring

Monitoring Recommendations

1. Monitor subnet neighbors: 208 threat-sibling IPs in the /24 block require ongoing surveillance

2. DNSBL monitoring: Track additional blacklist additions

3. Geolocation validation: Investigate distance/RTT anomaly for potential spoofing or misattribution

4. Email authentication: No SPF/DMARC detected — potential spoofing vector if this IP is misused

Firewall/Blocking Guidance

• No immediate blocking required (no active threat indicators)
• Consider blocking if:

- DNSBL count increases beyond current threshold

- Subnet abuse density rises above 0.9

- Related IPs in /24 block show malicious activity

• Allow traffic for legitimate Ahrefs services if required

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Report Generated: Based on IPDebrief intelligence platform data

Classification: Internal Threat Intelligence

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