51.222.168.47📋 Copy

## IP Intelligence Briefing: 51.222.168.47/32

Classification: Moderate Risk | Risk Score: 40

Intel Summary:

Target IP 51.222.168.47 is assigned to OVH cloud infrastructure (ASN 16276) under organization Dmytro, Ahrefs Pte Ltd. The address resolves to proxy-ca018-san47.ahrefs.net within the 51.222.168.0/24 subnet. While no active malicious indicators were observed, the IP operates within a high-abuse density environment requiring defensive monitoring.

Ownership & Infrastructure:

• Provider: OVH (CloudCompute/Hosting infrastructure)
• Organization: Dmytro, Ahrefs Pte Ltd
• Network Block: 51.222.168.0/24
• Network Role: Cloud compute with hosting capabilities
• DNS Resolution: proxy-ca018-san47.ahrefs.net (Ahrefs.net domain)
• Open Ports: None detected (firewalled/no services exposed)

Threat Indicators:

• Risk Score: 40 (Moderate Risk)
• Blacklist Status: 1 DNSBL listing identified (8 total checks)
• Known Threats: No confirmed attacker activity, spam source, or Tor exit node
• Campaign Correlation: No associated threat campaigns detected

Geolocation Analysis:

• Reported Location: Canada (Quebec)
• Geolocation Validity: Invalid (RTT discrepancy detected)
• Distance Violation: Claimed coordinates (45.5°N, -73.6°W) show 5,598km distance with 27ms RTT, violating minimum possible RTT of 112ms for that distance
• Infrastructure Type: Cloud-based with firewalled configuration

Neighborhood Analysis:

• Subnet: 51.222.168.0/24
• Abuse Density: 0.7812 (High Abuse Classification)
• Subnet Statistics: 256 total siblings, 229 active, 200 threat siblings
• Inherited Risk Score: 31
• Neighbor Risk Distribution: 100% medium risk (score 40) in sampled set

Observation History:

• Total Observations: 21 signals recorded
• Latest Observation: 2026-06-28 — Confirmed cloud infrastructure from OVH
• Historical Context: 2026-06-19 observations confirmed high-abuse neighborhood classification
• Threat Persistence: Not persistently malicious (observation count: 1)
• Routing Stability: Not stable (route changes detected within 30-day window)

Relationship Graph:

• Total Relationships: 59
• Primary Associations: Network-level relationships (OVH-CUST-281059697)

Recommended Actions:

Due to moderate risk classification and high-abuse neighborhood context, implement the following defensive measures:

```bash

# iptables

iptables -A INPUT -s 51.222.168.47 -j DROP

# nftables

nft add rule inet filter input ip saddr 51.222.168.47 drop

# nginx

deny 51.222.168.47;

# pfSense

51.222.168.47/32

# Cloudflare WAF

{

"description": "Block 51.222.168.47 — IPDebrief risk score 40",

"action": "block",

"filter": {"expression": "ip.src eq 51.222.168.47"}

}

# AWS WAF

{

"Addresses": ["51.222.168.47/32"],

"Description": "IPDebrief risk 40"

}

```

Analyst Notes:

While the IP currently shows no active malicious behavior, the high-abuse density of the /24 subnet (0.7812) with 200 threat siblings warrants continued monitoring. The geolocation anomalies may indicate routing manipulation or misconfiguration. Recommend correlating with other signals from the 51.222.168.0/24 subnet before establishing permanent blocking policies. The Ahrefs.net association suggests this may be a legitimate hosting customer, but the neighborhood abuse context necessitates defensive posture.

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