51.222.95.161📋 Copy

## IP INTELLIGENCE BRIEFING: 51.222.95.161/32

Classification: Moderate Risk | Risk Score: 40/100 | Subnet Classification: High Abuse

EXECUTIVE SUMMARY

IP 51.222.95.161 belongs to OVH cloud infrastructure under organization Dmytro, Ahrefs Pte Ltd (ASN 16276). The IP is classified within a high-abuse subnet (51.222.95.0/24) with 71.88% abuse density. Despite legitimate ownership association with Ahrefs, the neighborhood analysis indicates elevated risk requiring defensive monitoring.

OWNERSHIP & INFRASTRUCTURE

• Provider: OVH (Cloud Hosting)
• Network Block: 51.222.95.0/24
• Infrastructure Type: CloudCompute / Hosting
• DNS Resolution: proxy-ca010-san161.ahrefs.net (ahrefs.net domain)
• Control Plane: BGP prefix 51.222.0.0/16, route stability: unstable
• Services: No open ports detected; endpoint appears firewalled

GEOLOCATION DATA

• Reported Country: CA (Canada)
• Coordinates: 56.13°N, -106.35°W (plausibility: 35%)
• Confidence: Low – geolocation validation shows geographic implausibility
• Note: Hostname suggests Singapore deployment; significant discrepancy between reported and inferred location

THREAT INDICATORS

• Known Attacker: No
• Tor Exit Node: No
• Spam Source: No
• Blacklist Count: 0
• Abuse Confidence Score: Not assigned
• Threat Persistence: Not persistently malicious
• Campaign Correlation: None detected

NEIGHBORHOOD ANALYSIS

The /24 subnet (51.222.95.0/24) exhibits concerning metrics:

• Abuse Density: 0.7188 (71.88%)
• Total Siblings: 256
• Active Siblings: 234
• Threat Siblings: 184
• Inherited Risk: 28
• Risk Distribution: 100 medium-risk, 0 high/low risk neighbors
• Classification: High abuse environment

OBSERVATION HISTORY

Recent signal history (last 20 observations) shows:

• Consistent high-abuse classification since June 2026
• Stable provider/ownership signals
• No significant risk escalation or de-escalation trends
• Recent operator score: 0.2174 (Minimal threat classification)

RECOMMENDED ACTIONS

IMMEDIATE DEFENSIVE MEASURES:

1. Firewall Blocking: Recommended for inbound traffic

- `iptables -A INPUT -s 51.222.95.161 -j DROP`

- `nft add rule inet filter input ip saddr 51.222.95.161 drop`

2. WAF Rules:

- Cloudflare: Block with expression `ip.src eq 51.222.95.161`

- AWS WAF: Add to blocklist with description "IPDebrief risk 40"

RISK MITIGATION NOTES:

• While ownership traces to Ahrefs (legitimate SEO infrastructure), the high-abuse neighborhood warrants blocking
• No direct threat indicators present, but subnet-level risk is significant
• Monitor for outbound C2 traffic or data exfiltration attempts from this IP
• Consider blocking entire /24 subnet if traffic patterns confirm malicious activity

INTELLIGENCE CONTEXT

This IP represents a moderate-risk endpoint within a compromised or heavily abused hosting block. The discrepancy between legitimate ownership and high neighborhood abuse density suggests either:

• Compromised infrastructure
• Legitimate services operating in an abused block
• Shared hosting abuse affecting multiple tenants

Recommendation: Apply block rules while monitoring for traffic patterns that might indicate legitimate use versus malicious activity.

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