51.195.244.255📋 Copy

INTELLIGENCE BRIEFING: 51.195.244.255/32

Classification: MODERATE RISK | Generated: Current | Status: ACTIVE

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**EXECUTIVE SUMMARY**

IP 51.195.244.255 is a cloud-hosted infrastructure endpoint operated by Ahrefs Pte Ltd Dmytro (ASN 16276, OVH). The IP exhibits moderate risk (score: 40) with minimal direct threat indicators, though it resides in a high-abuse density subnet (51.195.244.0/24) with 83.14% abuse classification and 212 of 255 sibling IPs flagged as threat sources.

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**OWNERSHIP & INFRASTRUCTURE**

• Organization: Ahrefs Pte Ltd Dmytro
• ASN: 16276 (OVH SAS)
• Location: London, England, GB (verified)
• Infrastructure Type: Cloud Compute / Hosting
• Network Role: Firewalled / No Services Detected
• DNS Record: proxy-uk000-san255.ahrefs.net (ahrefs.net)
• Control Plane: BGP prefix 51.195.0.0/16, route stability: false
• DNSBL Status: Listed on 1 of 8 evaluated blacklists

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**THREAT INDICATORS**

• Reputation: Moderate Risk (Score: 40)
• Abuse Confidence: Not calculated
• Known Attacker: No
• Spam Source: No
• Tor Exit Node: No
• Known Campaigns: None identified
• Direct Threat Indicators: None
• Scan Activity: No open ports or active services detected

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**SUBNET CONTEXT (51.195.244.0/24)**

• Abuse Density: 0.8314 (High)
• Active Siblings: 207 / 255
• Threat Siblings: 212
• Risk Inheritance: 33
• Neighbor Risk Distribution: 100 medium-risk IPs, 0 high/low

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**OBSERVATION HISTORY**

• Recent Activity: Signals observed June 15-20, 2026
• Geolocation Consistency: Stable (London, GB)
• Operator Score: 0.2174 (Minimal)
• RTT Profile: 90-99ms average, 473.7km distance from probe location
• Persistence: 1 threat observation recorded
• Ownership Changes: None

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**RELATIONSHIP GRAPH**

• Total Relationships: 34 entities
• Network Associations: OVH_282347336 (multiple references)
• No Direct Campaign Correlations

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**RECOMMENDED ACTIONS**

Blocklist Recommendation: Due to moderate risk score and high-abuse subnet context, blocking is recommended.

Firewall Rules:

```bash

# iptables

iptables -A INPUT -s 51.195.244.255 -j DROP

# nftables

nft add rule inet filter input ip saddr 51.195.244.255 drop

```

WAF Integration:

• Cloudflare: `ip.src eq 51.195.244.255` → Block
• AWS WAF: `Addresses: ["51.195.244.255/32"]` → Block
• Nginx: `deny 51.195.244.255;`

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**ANALYST NOTES**

This IP shows minimal direct malicious indicators but operates within a high-abuse OVH subnet. The Ahrefs domain association suggests legitimate business use, but the subnet context warrants defensive blocking. Monitor for service activation (port scans detected in historical data). Consider subnet-level monitoring for 51.195.244.0/24 due to 83.14% abuse density.

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