51.195.215.171📋 Copy

# IP INTELLIGENCE BRIEFING: 51.195.215.171/32

## EXECUTIVE SUMMARY

IP address 51.195.215.171 is classified as Moderate Risk (Score: 40) and operates within cloud infrastructure hosted by OVH in London, United Kingdom. The IP is associated with the ahrefs.net domain infrastructure and is located in a subnet exhibiting high abuse density (0.7695).

## OWNERSHIP & GEOLOCATION

• Organization: Ahrefs Pte Ltd Dmytro (ASN 16276)
• Network Provider: OVH (Cloud Compute Infrastructure)
• Geolocation: London, England, United Kingdom (GB)
• IP Block: 51.195.0.0/16 (Origin ASN 16276)
• Registration: ARIN RIR

## NETWORK CLASSIFICATION

• Infrastructure Type: Cloud Compute / Cloud Hosting
• Connection Type: Not residential, not mobile, not Tor
• DNS PTR: proxy-uk009-san171.ahrefs.net
• Domain Association: ahrefs.net
• Service Status: Firewalled / No Services Detected
• DNSSEC: Valid
• CAA Records: Present

## THREAT INDICATORS

• Threat Reputation: No active threat indicators identified
• Tor Exit Node: No
• Known Attacker: No
• Spam Source: No
• Blacklist Count: 0
• Campaign Correlation: None detected
• Known Campaigns: None

## NEIGHBORHOOD ANALYSIS

Subnet: 51.195.215.0/24

• Abuse Density: 0.7695 (High Abuse Classification)
• Total Siblings: 256 IPs
• Active Siblings: 212 IPs
• Threat Siblings: 197 IPs
• Inherited Risk Score: 30

Risk Distribution Across Neighbors:

• High Risk: 0 IPs
• Medium Risk: 98 IPs
• Low Risk: 2 IPs

## OBSERVATION HISTORY

Total Observations: 24 signals recorded

• Most Recent Activity: 2026-06-18
• Operator Score: 0.2174 (Minimal)
• DNSSEC Validation: Valid
• Threat Persistence: 0 days (not persistently malicious)

Recent Signal Types Observed:

• Port scanning activity
• Subnet abuse density classification
• Operator score assessments
• Multi-dimensional profile evaluations

## RELATIONSHIP GRAPH

Total Relationships: 43 entities

• Primary Association: OVH Network (OVH_282347345)
• Network Type: Same Network relationships
• Infrastructure Cluster: OVH cloud infrastructure

## SECURITY ACTIONS & RECOMMENDATIONS

Based on the moderate risk classification and high-abuse neighborhood, the following defensive measures are recommended:

1. Monitor Closely: The IP operates in a high-abuse subnet with 197 threat-sibling IPs. Enhanced monitoring recommended.

2. Rate Limiting: Implement rate limiting for traffic from this subnet given the abuse density profile.

3. DNS Filtering: The PTR hostname indicates proxy infrastructure (proxy-uk009-san171.ahrefs.net); consider filtering based on known ahrefs.net infrastructure.

4. Connection Logging: Log all connections to enable behavioral analysis and anomaly detection.

## RISK ASSESSMENT

## INTELLIGENCE NOTES

The IP address 51.195.215.171 is part of OVH's cloud infrastructure in London, associated with ahrefs.net. While the specific IP shows no direct threat indicators, it operates within a subnet with elevated abuse density (0.7695), suggesting the broader infrastructure may be subject to abuse campaigns. The high number of active sibling IPs (212/256) and threat siblings (197) indicates this is a well-utilized hosting environment.

Recommendation: Monitor traffic patterns but no immediate blocking required. Consider subnet-level filtering if false positives accumulate.

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