51.195.183.237
IP Intelligence Briefing: 51.195.183.237
Date: 2026-06-09
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**1. Risk Profile**
- Risk Score: 40 (Moderate Risk)
- Provider: OVH (ASN 16276)
- Ownership: Ahrefs Pte Ltd Dmytro (registered in GB)
- Geolocation: London, England, GB (high-confidence geolocation)
- Network Role: CloudCompute infrastructure (OVH-hosted, no public services)
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**2. Historical Observations**
- Abuse Density: 63.67% (high-risk subnet)
- Threat Siblings: 163/256 IPs in the /24 subnet are flagged as threats.
- Stability: No significant changes in risk signals over time (1 observation recorded).
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**3. Network Relationships**
- Linked Entities:
- Subnet: 51.195.183.0/24 (OVH network)
- Hostname: `proxy-uk003-san237.ahrefs.net` (DNS association)
- Organization: Ahrefs Pte Ltd (hosting provider).
- DNS: No email authentication records (SPF/DKIM/DMArC missing).
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**4. Neighborhood Analysis**
- Subnet Abuse Density: 63.67% (classified as "high_abuse").
- Active Siblings: 180 IPs in the /24 subnet.
- Threat Context: 163 IPs in the subnet are linked to malicious activity (e.g., spam, phishing).
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**5. Security Recommendations**
- Firewall Actions:
- Block: `51.195.183.237/32` (no actionable rules generated due to moderate risk score).
- Monitor: Entire subnet (`51.195.183.0/24`) due to high abuse density.
- Mitigation:
- Investigate traffic patterns to the subnet, as 63.67% of neighbors are flagged as threats.
- Verify if the IP is part of a larger campaign (no correlated IPs or campaigns detected).
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**6. Summary**
The IP `51.195.183.237` is associated with a high-risk subnet (OVH network) and linked to Ahrefs Pte Ltd. While the IP itself has a moderate risk score, the surrounding subnet exhibits significant malicious activity. SOC teams should monitor traffic to/from this subnet and consider blocking the entire range to mitigate potential threats.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Ahrefs Pte Ltd Dmytro |
| ASN | AS16276 |
| Network Name | — |
| CIDR Block | — |
| RIR | ARIN |
| Country | — |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | proxy-uk003-san237.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-uk003-san237.ahrefs.net |
🔐 DNS Hygiene
| Hygiene Score | 40% (Fair) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Not verified |
| DNSSEC | Valid |
| CAA | Present |
☁️ Network Classification
| Infrastructure | Infrastructure / Datacenter |
| Service Purpose | Firewalled / No Services |
| Network Tier | Hosting — Infrastructure provider without advanced routing |
🔌 Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| No open ports detected | |||
| Closed Ports | 22, 25, 80, 443, 3389, 8080, 8443 (0 open / 7 scanned) | ||
| Server | — |
| HTTP Title | — |
🔐 TLS Certificate
| SANs | None |
| Valid From | — |
| Valid Until | — |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 38% | 2 | 4 |
| routing | 13% | 1 | 1 |
| services | 21% | 2 | 2 |
| ownership | 20% | 2 | 3 |
| reputation | 28% | 1 | 3 |
| geolocation | 33% | 2 | 3 |
| Overall | 26% | 10 | 16 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-22 09:13:26 UTC |
| Last Seen | 2026-06-28 18:48:31 UTC |
| Profile Built | 2026-06-29 06:53:01 UTC |
| Data Freshness | Live |
| Signal Types | 22 |
| Total Observations | 25 |
Full dossier details are available via our API.