51.161.65.20📋 Copy

IP Intelligence Briefing: 51.161.65.20/32

Date: 2026-06-10

---

**1. Core Profile**

• Risk Score: 40 (Moderate Risk)
• Ownership: Registered to Ahrefs Pte Ltd (OVH ASN 16276).
• Geolocation: Montreal, Canada (subtly inferred via DNS).
• Network Role: Cloud compute infrastructure (OVH-hosted, no open services).
• Threat Indicators: No direct malicious activity detected.

---

**2. Subnet Analysis**

• Subnet: 51.161.65.0/24
• Abuse Density: 58% (high abuse classification).
• Neighbor Risk:

- 96 IPs flagged as medium-risk (score 40–50).

- 4 low-risk IPs.

- 0 high-risk IPs.

• Key Neighbor: 51.161.65.0 (score 40) and 51.161.65.1 (score 40).

---

**3. Observational History**

• Recent Activity:

- No detected threats, spam, or malicious campaigns.

- Subnet abuse density has remained stable at 58% over 30 days.

- DNS resolution linked to proxy-ca011-san20.ahrefs.net (Ahrefs infrastructure).

---

**4. Relationships**

• DNS Associations:

- Linked to proxy-ca011-san20.ahrefs.net (Ahrefs Pte Ltd).

• Network Affiliation:

- Part of OVH’s 51.161.0.0/17 block, classified as "high_abuse" by IPDebrief.

---

**5. Recommendations**

• Monitoring:

- Watch the 51.161.65.0/24 subnet for unusual traffic patterns due to high abuse density.

- Investigate Ahrefs’ infrastructure for potential misconfigurations or compromised endpoints.

• Mitigation:

- Block the IP via firewall rules (see below) as a precaution.

• Tools:

- Use IPDebrief’s compare function to analyze high-risk neighbors.

---

**6. Firewall Actions**

• iptables:

```bash

iptables -A INPUT -s 51.161.65.20 -j DROP

```

• nftables:

```bash

nft add rule inet filter input ip saddr 51.161.65.20 drop

```

• Cloudflare/WAF:

```json

{

"action": "block",

"filter": {

"expression": "ip.src eq 51.161.65.20"

}

}

```

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Conclusion: The IP is part of a cloud infrastructure with no direct malicious activity, but its subnet exhibits high abuse density. SOC teams should monitor the subnet and consider blocking the IP to mitigate potential risks.

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