51.195.244.21📋 Copy

# IP INTELLIGENCE BRIEFING

IP Address: 51.195.244.21/32

Analysis Date: 2026-06-20

Classification: Moderate Risk

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## EXECUTIVE SUMMARY

IP 51.195.244.21 is a cloud compute endpoint hosted by OVH in London, UK, associated with the Ahrefs domain infrastructure. The IP carries a moderate risk score of 40 and operates within a high-abuse subnet (51.195.244.0/24) exhibiting elevated neighbor threat density. No active malicious indicators detected, but network context warrants monitoring.

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## NETWORK ATTRIBUTES

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## THREAT ASSESSMENT

Current Risk Level: Moderate (Score: 40/100)

Threat Indicators:

• No active threat indicators detected
• Tor exit node: No
• Known attacker: No
• Spam source: No
• Blacklist count: 0
• DNSBL listed: 1 of 8 lists

Network Context: The IP operates within subnet 51.195.244.0/24, classified as high_abuse with an abuse density score of 0.8242. Of 226 active sibling IPs in the /24, 211 are flagged as threat siblings, indicating significant cluster-level abuse activity.

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## OBSERVATION HISTORY

Total Observations: 19 signals detected

Recent Signal Summary (2026-06-20):

• Geolocation signals consistently point to London, GB with multi-signal inference
• ASN signals confirm AS16276 ovh sas
• Abuse density signals show sustained high_abuse classification (0.8242)
• Operator score: 0.2174 (Minimal)

Temporal Analysis:

• Ownership changes: 0
• Threat persistence days: 0
• Is persistently malicious: No

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## RELATIONSHIP MAPPING

Total Relationships: 42

Primary Associations:

• Same Network: OVH_282347336 (42 instances)
• No direct hostname or certificate relationships identified

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## RECOMMENDED ACTIONS

Status: Monitor / Block Based on Policy

Firewall Rules:

```bash

# iptables

iptables -A INPUT -s 51.195.244.21 -j DROP

# nftables

nft add rule inet filter input ip saddr 51.195.244.21 drop

# nginx

deny 51.195.244.21;

# pfSense

51.195.244.21/32

# Cloudflare WAF

Block 51.195.244.21 — IPDebrief risk score 40

# AWS WAF

Addresses: 51.195.244.21/32

Description: IPDebrief risk 40

```

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## ANALYST NOTES

While the IP itself shows no direct threat indicators, the high abuse density of the parent subnet (51.195.244.0/24) with 211 threat siblings suggests potential lateral abuse vectors. The infrastructure is associated with legitimate Ahrefs operations but operates from a compromised cloud provider segment. Recommend correlating with threat intelligence feeds for any emerging campaign indicators.

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*Report generated by IPDebrief Intelligence Platform*

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