51.195.215.151📋 Copy

# IP INTELLIGENCE BRIEFING

Target: 51.195.215.151/32

Date: 2026-06-28

Classification: Moderate Risk Infrastructure

## Executive Summary

The IP address 51.195.215.151 is hosted infrastructure under OVH in London, GB, associated with the domain ahrefs.net. The IP demonstrates moderate risk (score 40) primarily driven by elevated subnet abuse density (0.8047) within the 51.195.215.0/24 network. No active threat indicators detected; the address resolves to a proxy hostname with no open services.

## Infrastructure Profile

• Organization: Ahrefs Pte Ltd Dmytro
• ASN: 16276 (OVH)
• Location: London, England, GB
• Infrastructure Type: Cloud Compute / Hosting
• Network Classification: Firewalled / No Services
• DNS PTR: proxy-uk009-san151.ahrefs.net
• Forward Resolution: Confirmed to ahrefs.net domain

## Risk Assessment

## Historical Signals (22 observations)

Recent monitoring shows stable infrastructure signals:

• 2026-06-28: Operator score 0.1 (minimal risk)
• 2026-06-20: DNS resolution confirmed for ahrefs.net; cloud/hosting classification verified
• No evidence of persistent malicious activity or ownership changes

## Network Context

Subnet Analysis (51.195.215.0/24):

• Abuse Density: 0.8047 (High)
• Total Siblings: 256
• Active Siblings: 239
• Threat Siblings: 206
• Risk Distribution: 0 High, 27 Medium, 73 Low

The high abuse density correlates with OVH's London hosting tier, which typically contains elevated numbers of legitimate and potentially misconfigured hosts.

## Relationships

• Primary Network: OVH_282347345 (42 same-network relationships)
• Domain Association: ahrefs.net (legitimate SEO analytics platform)
• No certificate-based or campaign-level correlations identified

## Recommended Security Actions

Given the moderate risk profile and high-abuse subnet context, the following controls are recommended:

Immediate Mitigation

```bash

# iptables

iptables -A INPUT -s 51.195.215.151 -j DROP

# nftables

nft add rule inet filter input ip saddr 51.195.215.151 drop

```

WAF Rules

• Cloudflare WAF: Block with expression `ip.src eq 51.195.215.151`
• AWS WAF: Add address `51.195.215.151/32` to rule set

Monitoring Recommendation

Monitor for activity patterns from this IP. While no direct threats are indicated, the high-abuse subnet warrants enhanced logging and behavioral analysis.

## Analyst Notes

This IP belongs to Ahrefs infrastructure (legitimate SEO tool provider) hosted on OVH. The moderate risk score is contextual to the subnet's abuse density rather than individual IP malicious activity. No immediate blocking required unless organizational policy mandates subnet-level mitigation for high-abuse ranges.

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*Intelligence generated by IPDebrief™ — Defensive security intelligence platform*

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