51.195.183.230📋 Copy

## IP Intelligence Briefing: 51.195.183.230

Classification: Moderate Risk | Risk Score: 50/100

Reporting Period: 2026-06-15

Analysis Date: 2026-06-15

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Ownership and Geolocation

The IP address is registered to OVH SAS (ASN 16276) under the organization "Ahrefs Pte Ltd Dmytro". Geolocation data places the endpoint in London, England, United Kingdom (GB) with a 750km accuracy radius. The infrastructure operates on the BGP prefix 51.195.0.0/16 and maintains route stability with no observed route changes over the past 30 days.

Network Role and Infrastructure

The endpoint is classified as CloudCompute infrastructure with a "Firewalled / No Services" designation. No open ports or active services were detected during scanning. DNS resolution confirms the address maps to `proxy-uk003-san230.ahrefs.net` within the ahrefs.net domain space. CAA records are present and DNSSEC validation is confirmed.

Threat Indicators and Reputation

The IP is listed on 2 of 8 DNSBLs, indicating prior abuse associations. Proxy detection signals from multiple sources (proxycheck-io) classify the endpoint as a VPN/proxy with 85% confidence. No Tor exit node activity, known attacker patterns, or spam source indicators were observed. The threat observation count is 1, with no persistent malicious behavior detected.

Neighborhood and Contextual Risk

The /24 subnet (51.195.183.230/24) demonstrates high_abuse classification with an abuse density of 0.668. Of 256 total siblings, 195 are active with 171 classified as threat siblings, yielding an inherited risk score of 26. The neighborhood risk distribution shows 99 medium-risk neighbors and only 1 low-risk neighbor.

Observational History

Twenty-six observations were recorded, with the most recent signal (2026-06-15) confirming:

• High-abuse subnet classification (0.668 density)
• Proxy/VPN characteristics from proxycheck-io
• Domain resolution for ahrefs.net with valid CAA records
• Operator score of 0.4348 (labeled "Basic")

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SOC Actionable Recommendations

Immediate Actions:

1. Monitor closely due to high-abuse neighborhood context (171 threat siblings in /24)

2. Consider rate-limiting or blocking inbound connections given proxy/VPN classification

3. Review DNSBL listings for the 2 known listings to determine severity

Firewall/Policy Rules:

• Add to watchlist for traffic correlation
• Implement connection rate limiting for outbound traffic from this range
• Consider geo-blocking if policy permits for non-business purposes

Threat Hunting Indicators:

• Correlate traffic with known Ahrefs service patterns
• Monitor for abuse of proxy characteristics
• Investigate any outbound connections to non-standard destinations

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Summary: 51.195.183.230 is a moderate-risk cloud endpoint with proxy characteristics operating in a high-abuse neighborhood. While no direct malicious activity was observed, the contextual risk from neighborhood abuse density warrants defensive monitoring and policy consideration.

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