51.195.183.168📋 Copy

# IP Intelligence Briefing: 51.195.183.168/32

Classification: Moderate Risk (Score: 40/100)

Analysis Date: 2026-06-20

Report Type: Single-IP Threat Intelligence Assessment

---

## Executive Summary

IP 51.195.183.168 operates within a high-abuse OVH CloudCompute infrastructure environment. While the individual IP shows no direct threat indicators, it resides in a subnet with significant compromise activity, warranting defensive monitoring and selective blocking.

---

## Infrastructure Profile

DNS Resolution: proxy-uk003-san168.ahrefs.net (ahrefs.net)

BGP Route: 51.195.0.0/16 → AS1403 → AS16276

---

## Threat Assessment

Individual IP Signals

• Risk Score: 40 (Moderate)
• Known Attacker: False
• Spam Source: False
• Tor Exit Node: False
• Blacklist Count: 0
• Open Ports: None detected (firewalled)
• Threat Indicators: None identified

Subnet Environment (51.195.183.0/24)

• Abuse Density: 0.7695 (High)
• Classification: high_abuse
• Total Siblings: 256
• Active Siblings: 225
• Threat Siblings: 197

Critical Finding: The subnet exhibits elevated abuse density with 87.5% of active IPs flagged as threats. This indicates a compromised cloud hosting environment with widespread infrastructure abuse.

---

## Temporal Analysis

Observation History: 26 signals tracked

• Recent routing stability confirmed (route changes: 0 in 30 days)
• BGP path consistent with origin AS16276
• DNSBL listed on 1 of 8 total lists
• Operator classification: Basic (score: 0.4348)

---

## Recommended Security Actions

Immediate Mitigation

Block traffic from this IP using the following rules:

```bash

# iptables

iptables -A INPUT -s 51.195.183.168 -j DROP

# nftables

nft add rule inet filter input ip saddr 51.195.183.168 drop

# pfSense

51.195.183.168/32

# nginx

deny 51.195.183.168;

```

Cloud Provider Implementation

Cloudflare WAF:

```json

{

"description": "Block 51.195.183.168 — IPDebrief risk score 40",

"action": "block",

"filter": {

"expression": "ip.src eq 51.195.183.168"

}

}

```

AWS WAF:

```json

{

"Addresses": ["51.195.183.168/32"],

"Description": "IPDebrief risk 40"

}

```

---

## Intelligence Notes

1. Infrastructure Context: The IP is associated with Ahrefs domain infrastructure but operates as a firewalled cloud hosting resource. The subnet's high abuse density suggests this may be a compromised shared hosting environment.

2. Risk Mitigation Strategy: While this specific IP shows no active threat indicators, the subnet-level abuse density warrants broader monitoring. Consider implementing subnet-level rate limiting or blocking if business risk permits.

3. False Positive Consideration: The individual IP has no direct threat indicators. Blocking may be justified based on subnet reputation alone, but this should be weighed against potential legitimate use cases.

4. Relationship Graph: 42 relationships identified, all pointing to OVH network infrastructure. No external threat actor affiliations detected.

---

Analyst Note: This IP represents a moderate-risk infrastructure address within a high-abuse cloud environment. Defensive blocking is recommended, but investigate potential business justifications before implementation. Monitor for subnet-level activity escalation.

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