51.161.37.163📋 Copy

IP INTELLIGENCE BRIEFING: 51.161.37.163/32

*Generated: June 2026*

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EXECUTIVE SUMMARY

IP address 51.161.37.163 is a cloud infrastructure endpoint registered to OVH SAS (ASN 16276) operating within a high-abuse subnet. Current risk assessment indicates moderate risk (score: 40/100) with elevated neighborhood threat context. The IP resolves to aresolves to a DNS hostname within the ahrefs.net domain infrastructure.

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OWNERSHIP & INFRASTRUCTURE

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THREAT PROFILE

Current Risk Indicators:

• Risk Score: 40 (Moderate Risk)
• DNSBL Listed: 1 of 8 lists
• Tor Exit Node: No
• Known Attacker: No
• Spam Source: No
• Blacklist Count: 0 (current profile)

Control Plane Analysis:

• Operator Score: 0.2174 (Minimal)
• Route Stability: False
• DNSSEC Valid: Yes
• CAA Records: Present

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NEIGHBORHOOD ANALYSIS

The IP resides in subnet 51.161.37.0/24, classified as high_abuse:

• Abuse Density: 0.7383 (73.83%)
• Total Siblings: 256
• Active Siblings: 205
• Threat Siblings: 189
• Inherited Risk: 29/100

The neighborhood exhibits significant abuse activity, with 99 of 100 sampled neighbors flagged as medium risk.

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OBSERVATION HISTORY

24 signal observations tracked from June 2026:

• Recent geolocation signals consistently place IP in Montreal, QC, CA
• Multiple threat signals detected in recent 48-hour window
• Operator scores remain stable at minimal levels
• No persistent malicious activity observed (threatPersistenceDays: 0)

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NETWORK RELATIONSHIPS

58 relationships identified, all linking to the same network identifier (OVH-CUST-281059684). No cross-organization or multi-network associations detected.

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RECOMMENDED ACTIONS

Firewall Blocking Rules:

```bash

# iptables

iptables -A INPUT -s 51.161.37.163 -j DROP

# nftables

nft add rule inet filter input ip saddr 51.161.37.163 drop

# nginx

deny 51.161.37.163;

# Cloudflare WAF

expression: ip.src eq 51.161.37.163

action: block

# AWS WAF

Addresses: 51.161.37.163/32

Description: IPDebrief risk 40

```

Recommendation: Block this IP at perimeter. The moderate risk score combined with high-abuse neighborhood context warrants defensive blocking. Monitor for any changes in threat indicators.

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Classification: Moderate Risk / High Abuse Neighborhood

Priority: Medium

Action Required: Firewall Block

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