51.195.215.124📋 Copy

# IP INTELLIGENCE BRIEFING

Subject: 51.195.215.124/32

Classification: Moderate Risk

Date: June 2026

Analyst: IPDebrief Intelligence Team

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## EXECUTIVE SUMMARY

IP 51.195.215.124 is a cloud-based infrastructure endpoint registered to OVH (ASN 16276) with geolocation data placing it in London, England. The IP exhibits moderate risk (score: 40) with significant neighborhood-level abuse activity. Historical data indicates escalating threat activity within the /24 subnet, with abuse density increasing from 0.3828 to 0.793 over a 10-day period.

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## NETWORK PROVENANCE

• IP Address: 51.195.215.124/32
• ASN: 16276 (OVH SAS)
• Organization: Ahrefs Pte Ltd Dmytro
• RIR: ARIN
• Geolocation: London, England, United Kingdom (GB)
• Infrastructure Type: CloudCompute
• Network Classification: Cloud/Hosting

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## THREAT ASSESSMENT

Risk Profile

• Overall Risk Score: 40/100 (Moderate Risk)
• Provider Score: 0/100
• Authority Score: 0/100
• DNSBL Listings: 1/8 total lists

Threat Indicators

• Known Attacker: No
• Spam Source: No
• Tor Exit Node: No
• Campaign Matches: 0
• Active Threat Feeds: None

DNS Analysis

• PTR Hostname: proxy-uk009-san124.ahrefs.net
• Forward Resolution: Confirmed (ahrefs.net)
• Email Authentication: SPF/DMARC not configured
• DNSSEC: Valid

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## SUBNET ENVIRONMENT ANALYSIS

Scope: 51.195.215.0/24

• Total Siblings: 256
• Active Siblings: 238
• Threat Siblings: 203
• Abuse Density: 0.793 (High Abuse Classification)
• Inherited Risk: 31/100

Risk Distribution in /24:

• High Risk: 0%
• Medium Risk: 66%
• Low Risk: 34%

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## OBSERVATION HISTORY

Total Observations: 21 signals over monitoring period

Key Temporal Changes:

• June 20, 2026: Subnet classification escalated to "high_abuse" with 203 threat siblings and 0.793 abuse density
• June 28, 2026: Classification temporarily recoded to "mixed" with 98 threat siblings and 0.3828 abuse density
• Geolocation Inference: Multi-signal inference placed coordinates at 55.38°N, -3.44°W (confidence: 0.28)
• Network Classification: Confirmed as cloud/hosting infrastructure (OVH)

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## NETWORK RELATIONSHIPS

Total Relationships Identified: 42

Primary Network Associations:

• Multiple Same Network relationships to OVH_282347345
• Route stable: No (route changes observed in 30-day period)
• BGP Prefix: 51.195.0.0/16
• Origin ASN: 16276

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## SECURITY ACTIONS & RECOMMENDATIONS

Recommended Mitigations

Based on risk profile and neighborhood abuse patterns, the following actions are recommended:

Implementation Notes

• The IP is part of a high-abuse subnet (0.793 density) with 203 threat-sibling IPs
• No open ports detected; service banner indicates "Firewalled / No Services"
• Historical trend shows increasing threat activity; consider blocking entire /24 subnet if operational impact permits
• Provider contact: Abuse contact available via RDAP

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## INTELLIGENCE CONCLUSION

IP 51.195.215.124 represents a moderate-risk cloud endpoint with no direct threat indicators but situated in a high-abuse neighborhood. The escalation in subnet-level threat activity (from 98 to 203 threat siblings) suggests coordinated abuse within the hosting infrastructure. Recommend defensive blocking with awareness of operational impact on legitimate Ahrefs infrastructure sharing the same provider space.

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End of Briefing

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