51.195.215.111📋 Copy

# INTELLIGENCE BRIEFING: 51.195.215.111/32

Classification: MODERATE RISK

Date: 2026-06-15

Analyst: IPDebrief Intelligence Team

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## EXECUTIVE SUMMARY

IP address 51.195.215.111 is a cloud infrastructure address belonging to OVH hosting provider (ASN 16276), located in London, England. The IP resolves to hostname proxy-uk009-san111.ahrefs.net, associated with domain ahrefs.net. Current risk assessment indicates Moderate Risk (Score: 40) with no active threat indicators. However, the surrounding /24 subnet demonstrates high abuse density (0.8086), warranting enhanced monitoring.

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## OWNERSHIP & GEOLOCATION

Provider: OVH (ASN 16276)

Organization: Ahrefs Pte Ltd Dmytro

Geolocation: London, England, GB

Infrastructure Type: Cloud Compute / Hosting

Registration: RIR ARIN

The IP is assigned to OVH, a major European cloud hosting provider, and is associated with the SEO analytics service Ahrefs. The infrastructure classification indicates cloud-based hosting services.

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## TECHNICAL PROFILE

DNS Resolution:

• PTR Record: proxy-uk009-san111.ahrefs.net
• Forward Resolution: proxy-uk009-san111.ahrefs.net
• Forward Confirmed: FALSE
• Domain: ahrefs.net

Network Services:

• Open Ports: None detected
• Service Status: Firewalled / No Services
• HTTP/HTTPS: No active web services detected

Control Plane Indicators:

• BGP Prefix: 51.195.0.0/16
• Route Stability: FALSE
• Operator Score: 0.2174 (Minimal)
• DNSBL Listings: 0 active listings
• DNSSEC: Not Valid

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## THREAT ASSESSMENT

Current Risk Score: 40/100 (Moderate)

Abuse Confidence Score: Not Calculated

Known Campaigns: None Identified

Tor Exit Node: No

Known Attacker: No

Spam Source: No

Threat Indicators: None currently active. The IP does not appear on known threat feeds or blacklist databases.

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## NEIGHBORHOOD ANALYSIS

Subnet: 51.195.215.0/24

• Total Siblings: 256
• Active Siblings: 211
• Threat Siblings: 207
• Abuse Density: 0.8086 (HIGH)
• Inherited Risk: 32

Risk Distribution Across /24:

• High Risk: 0
• Medium Risk: 100 (100% of scanned neighbors)
• Low Risk: 0

All 100 sampled neighbors in the subnet exhibit identical risk scoring (40), indicating coordinated infrastructure deployment. The high abuse density suggests this subnet hosts multiple active services, with 207 out of 211 active siblings flagged for threat activity.

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## OBSERVATION HISTORY

Total Observations: 18

Threat Persistence: 0 days

Ownership Changes: 0

Recent observations (June 2026) show:

• Consistent high abuse density (0.8086)
• DNSSEC validation failures
• Minimal operator scoring
• No route changes in 30-day period
• No persistent malicious activity detected

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## RELATIONSHIP MAPPING

Identified Relationships: 33

• Same Network: OVH_282347345 (multiple instances)
• No certificate relationships detected
• No cross-network associations identified

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## RECOMMENDED ACTIONS

Based on the moderate risk assessment and high neighborhood abuse density:

1. Firewall Policy: Monitor inbound traffic from 51.195.215.0/24 subnet

2. Threat Intelligence: Add subnet to monitored watchlist due to 0.8086 abuse density

3. Log Analysis: Review historical logs for connections to 51.195.215.x range

4. DNS Filtering: Block or monitor proxy-uk009-san111.ahrefs.net if not legitimate business requirement

5. Periodic Review: Reassess quarterly given subnet-level risk concentration

Note: While the individual IP shows no active threats, the high-abuse neighborhood warrants proactive monitoring. The IP may be part of a legitimate Ahrefs infrastructure deployment but is situated in a high-risk hosting environment.

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END OF BRIEFING

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