51.222.168.8📋 Copy

# IPDEBRIEF INTELLIGENCE BRIEFING

Target IP: 51.222.168.8/32

Classification: Moderate Risk / Hosting Infrastructure

Date: June 2026

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## EXECUTIVE SUMMARY

IP 51.222.168.8 is a moderate-risk (40/100) OVH hosting infrastructure address associated with the ahrefs.net domain ecosystem. The IP shows no active threat indicators but operates within a high-abuse density subnet (51.222.168.0/24) with 205 malicious siblings. Geographic data inconsistencies and minimal operator score warrant continued monitoring.

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## INFRASTRUCTURE PROFILE

Network Assignment:

• ASN: 16276 (OVH)
• Organization: Dmytro, Ahrefs Pte Ltd
• CIDR Block: 51.222.168.0/24
• Provider Type: Cloud Hosting (OVH)

DNS Resolution:

• PTR Record: proxy-ca018-san8.ahrefs.net
• Forward Resolution: ahrefs.net (confirmed)
• DNSSEC: Valid
• CAA Records: Present

Geolocation Discrepancy:

• Reported Country: Canada (CA)
• Reported City: Singapore
• Plausibility Score: Invalid (geoPlausible: false)
• RTT Violation: Measured 27ms vs minimum possible 112ms for 5,598km distance
• Assessment: Geolocation data is unreliable; physical location cannot be confirmed

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## THREAT ASSESSMENT

Current Risk Status:

• Risk Score: 40 (Moderate)
• Abuse Confidence Score: Not Available
• Threat Indicators: None detected
• Blacklist Status: Listed on 1 of 8 DNSBLs
• Known Campaigns: None
• Tor Exit Node: No
• Spam Source: No
• Known Attacker: No

Control Plane Analysis:

• Operator Score: 0.2174 (Minimal)
• Route Stability: False (isRouteStable: false)
• BGP Prefix: 51.222.0.0/16
• DNSBL Listed Count: 1

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## NEIGHBORHOOD ANALYSIS

Subnet Classification: 51.222.168.0/24 — HIGH ABUSE

• Total Active Siblings: 229 / 256
• Threat Siblings: 205 (89.5% of active)
• Abuse Density: 0.8008 (Elevated)
• Risk Distribution: 100 medium-risk neighbors, 0 high/low-risk

Notable Neighbor IPs:

Assessment: This /24 subnet demonstrates concentrated abuse activity. The 89.5% threat sibling ratio indicates systematic exploitation of OVH hosting infrastructure for malicious purposes.

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## OBSERVATION HISTORY

Total Signals: 22 observations

Timeline: June 2026

Recent Activity:

• 2026-06-28 16:23:32: Geolocation signal (Canada, confidence 0.18)
• 2026-06-28 16:23:25: DNS resolution (ahrefs.net, confidence 0.80)
• 2026-06-20 14:28:32: DNS resolution (ahrefs.net, confidence 0.80)
• 2026-06-20 14:22:49: Network provider signal (OVH hosting, confidence 0.85)

Temporal Analysis:

• Ownership Changes: 0
• Threat Persistence: 0 days
• Is Persistently Malicious: No

Assessment: Consistent infrastructure signals with stable ownership. No escalation in threat activity detected over observation period.

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## NETWORK SERVICES

• Open Ports: None detected
• HTTP Services: None
• TLS Certificates: None
• Server Banner: None
• Service Purpose: Firewalled / No Services

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## THREAT INTELLIGENCE RELATIONSHIPS

Total Relationships: 56

• Network Associations: OVH-CUST-281059697 (primary)
• Hostname Associations: ahrefs.net domain family
• Campaign Correlations: 0

Assessment: Limited to hosting infrastructure relationships. No direct correlation to known threat campaigns.

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## RECOMMENDED ACTIONS

Immediate

• [ ] Monitor subnet 51.222.168.0/24 for abuse activity correlation
• [ ] Verify traffic patterns against ahrefs.net legitimate use case
• [ ] Review DNSBL listings for compliance requirements

Defensive Configuration

• [ ] Rate limit traffic from 51.222.168.0/24 subnet
• [ ] Implement connection throttling for ahrefs.net PTR records
• [ ] Monitor for DNS amplification activity

Network Monitoring

• [ ] Alert on high-volume traffic from this IP
• [ ] Track geolocation changes for anomaly detection
• [ ] Correlate with other OVH infrastructure in threat intelligence feeds

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INTelligence Confidence: Medium

Primary Risk Factor: High-abuse density neighborhood

Secondary Risk Factor: Geolocation data inconsistency

Recommendation: Monitor but no immediate blocking required.

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