51.195.183.181📋 Copy

# IP Intelligence Briefing: 51.195.183.181

## Executive Summary

The IP address 51.195.183.181 presents as a moderate-risk infrastructure endpoint hosted on OVH's cloud compute network in London, GB. While the IP itself shows no active threat indicators, it resides within a high-abuse-density subnet (0.6836) with 175 classified threat siblings, warranting enhanced monitoring.

## Infrastructure Profile

Network Identity:

• ASN: 16276 (OVH)
• Organization: Ahrefs Pte Ltd Dmytro
• CIDR: 51.195.0.0/16
• Classification: CloudCompute / Hosting Infrastructure

Geolocation:

• Country: GB (England, London)
• Accuracy Radius: 750km
• GeoConsensus: Validated across multiple sources

DNS Resolution:

• PTR Hostname: proxy-uk003-san181.ahrefs.net
• Forward Resolved: proxy-uk003-san181.ahrefs.net
• Domain: ahrefs.net
• DNSSEC: Valid
• DNSBL Listed: 1 of 8 lists

## Risk Assessment

Current Risk Score: 40 (Moderate Risk)

Risk Breakdown:

• Provider Score: 0
• Authority Score: 0
• Stability Score: 0

Threat Indicators:

• Known Attacker: No
• Tor Exit Node: No
• Spam Source: No
• Active Blacklist Campaigns: None
• Abuse Confidence Score: Not applicable

Network Role: Firewalled / No Services (no open ports detected)

## Neighborhood Analysis

Subnet: 51.195.183.0.0/24

Abuse Metrics:

• Abuse Density: 0.6836 (High Abuse Classification)
• Inherited Risk: 27
• Total Siblings: 256
• Active Siblings: 195
• Threat Siblings: 175

Risk Distribution Across Subnet:

• High Risk: 0
• Medium Risk: 99
• Low Risk: 1

The subnet exhibits significant abuse density, with 68% of siblings classified as threat-adjacent. This contextual risk factor suggests the infrastructure may host compromised endpoints or be co-located with malicious activity.

## Historical Observations

Observation Count: 19 signals

Most Recent: 2026-06-15

Key Historical Signals:

• Cloud hosting infrastructure classification (confidence: 0.85)
• Operator score: 0.2174 (Minimal operator reputation risk)
• Geolocation inference: GB with 0.28 confidence
• Routing stability: Not route-stable

No persistent malicious behavior patterns detected over observation window.

## Threat Intelligence Context

• Campaign Likelihood: None
• CERT Matches: 0
• Correlated IPs: 0
• Known Malware Families: None

## Recommended Actions

For SOC Analysts:

1. Monitor for outbound connections from this IP to known malicious destinations

2. Flag any traffic attempting to establish reverse shells or C2 connections

3. Consider subnet-level monitoring due to high abuse density (0.6836)

4. Review firewall rules for proxy-uk003-san181.ahrefs.net hostnames

5. Alert on any unexpected service openings on this IP (currently firewalled)

Classification: Moderate Risk - Infrastructure Endpoint with High-Abuse Neighborhood Context

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