51.195.215.7📋 Copy

# IP Intelligence Briefing: 51.195.215.7/32

Classification: Moderate Risk | Date: Current Intelligence

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## Executive Summary

IP 51.195.215.7 is a moderate-risk (score: 50) cloud hosting infrastructure address operated by OVH (ASN 16276) in London, United Kingdom. The IP resolves to proxy-uk009-san7.ahrefs.net, indicating association with Ahrefs Pte Ltd, a legitimate SEO analytics provider. However, the /24 subnet demonstrates elevated abuse characteristics with a high-abuse classification and significant threat sibling concentration.

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## Infrastructure Profile

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## Threat Indicators

• Blacklist Status: Listed on 2 of 8 DNSBLs
• Known Attacker: No
• Tor Exit Node: No
• Spam Source: No
• Campaign Correlation: No known campaigns
• Recent Listings: High-severity blacklist listing observed (2026-06-28)

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## Neighborhood Analysis

The /24 subnet (51.195.215.0/24) exhibits elevated abuse characteristics:

• Abuse Density: 0.8047 (HIGH)
• Classification: high_abuse
• Inherited Risk: 32
• Total Siblings: 256
• Active Siblings: 239
• Threat Siblings: 206

Risk Distribution in /24:

• High Risk: 0
• Medium Risk: 26
• Low Risk: 74

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## Historical Observations (22 total)

Recent signal history reveals:

1. 2026-06-28: Blacklist listings with high severity

2. 2026-06-20: Subnet abuse density confirmed at 0.8047

3. Multiple: Consistent OVH cloud compute classification

4. DNS Records: Associated with ahrefs.net domain

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## Network Relationships

• Primary Network: OVH_282347345 (51.195.0.0/16)
• Network Type: Same Network relationships (45+ entries)
• Geolocation Validation: Plausible (distance: 473.7km, avg RTT: 89.2ms)

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## Recommended Actions

Firewall Rule Recommendations:

• iptables: `iptables -A INPUT -s 51.195.215.7 -j DROP`
• nftables: `nft add rule inet filter input ip saddr 51.195.215.7 drop`
• nginx: `deny 51.195.215.7;`
• pfSense: `51.195.215.7/32`
• Cloudflare WAF: Block with expression `ip.src eq 51.195.215.7`
• AWS WAF: Block with addresses `51.195.215.7/32`

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## Analyst Notes

This IP presents a moderate-risk profile with legitimate commercial association (Ahrefs) but operates within a high-abuse density subnet. The subnet's 206 threat siblings out of 239 active IPs suggests elevated malicious activity in the broader address space. SOC teams should consider:

1. Contextual Filtering: Evaluate traffic against organizational baseline

2. Subnet Monitoring: Monitor the /24 for correlated malicious activity

3. Action Threshold: Block recommended due to DNSBL listings and subnet abuse characteristics

Confidence Level: High — multiple corroborating signals across infrastructure, historical, and neighborhood data.

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