51.195.215.174📋 Copy

# IP Intelligence Briefing: 51.195.215.174/32

Classification: Moderate Risk | Provider: OVH | Location: London, GB

## Executive Summary

IP address 51.195.215.174 operates within OVH cloud infrastructure and is associated with ahrefs.net. The IP carries a moderate risk score (50/100) and resides in a high-abuse-density subnet (51.195.215.0/24) with 80% abuse density. No active threat indicators were identified, but the subnet's abuse characteristics warrant monitoring.

## Infrastructure Profile

• Organization: Ahrefs Pte Ltd Dmytro
• ASN: 16276 (OVH)
• BGP Prefix: 51.195.0.0/16
• Network Type: Cloud Compute / Hosting
• DNS: proxy-uk009-san174.ahrefs.net
• Services: No open ports detected (firewalled configuration)

## Geographic Analysis

• Country: GB (London)
• Geolocation Confidence: Validated with 5 probe measurements
• RTT: 87.2ms average
• Note: Historical ASN data indicates French allocation (OVH global infrastructure); current geolocation consensus points to London

## Threat Assessment

• Risk Score: 50 (Moderate)
• DNSBL Listings: 2 of 8 total lists
• Threat Indicators: None (not Tor exit, not known attacker, not spam source)
• Campaign Correlation: None detected
• Stability: Route stable, not MOAS, 9,264 days ASN allocation

## Neighborhood Context

Subnet: 51.195.215.0/24

• Abuse Density: 0.8008 (High Abuse Classification)
• Total Siblings: 256
• Active Siblings: 239
• Threat Siblings: 205 (inherited risk score: 32)

The /24 subnet demonstrates significant abuse activity, which contextualizes the IP's moderate risk rating.

## Signal History

27 observations recorded with consistent patterns:

• ASN 16276 observed across all recent measurements
• Persistent ahrefs.net domain resolution
• Consistent geolocation signals (London region)
• Stable RTT measurements (~87ms)
• No ownership changes detected

## Recommended Actions

Firewall Rules (Block Recommendation)

```bash

# iptables

iptables -A INPUT -s 51.195.215.174 -j DROP

# nftables

nft add rule inet filter input ip saddr 51.195.215.174 drop

# nginx

deny 51.195.215.174;

# pfSense

51.195.215.174/32

# Cloudflare WAF

{"description":"Block 51.195.215.174 — IPDebrief risk score 50","action":"block","filter":{"expression":"ip.src eq 51.195.215.174"}}

# AWS WAF

{"Addresses":["51.195.215.174/32"],"Description":"IPDebrief risk 50"}

```

Monitoring Priorities

1. Monitor subnet-level abuse trends (51.195.215.0/24)

2. Track DNS resolution patterns to ahrefs.net infrastructure

3. Watch for service enumeration attempts (currently no open ports)

4. Review connection logs for anomalous outbound traffic

## Intelligence Notes

The IP operates within legitimate hosting infrastructure but resides in a high-abuse-density subnet. The moderate risk score reflects DNSBL listings rather than active malicious behavior. SOC teams should consider contextual factors: if this IP is observed initiating connections to your infrastructure, the subnet's abuse density suggests potential for compromised peer IPs. Monitor for patterns of lateral movement or scanning activity from the broader /24 subnet.

Generated: 2026-06-28 | Data Sources: IPDebrief Intelligence Platform

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