51.195.244.161
IP Intelligence Briefing: 51.195.244.161
Date: 2026-06-08
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**1. Core Profile**
- Risk Score: Moderate (40/100)
- Ownership: Ahrefs Pte Ltd (ASN 16276, ARIN-registered)
- Geolocation: London, UK (ENG region)
- Network Role: Cloud compute infrastructure (OVH-hosted, no residential/mobile indicators)
- Threat Indicators: No malicious activity detected (no blacklists, spam, or campaigns).
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**2. Network Behavior**
- BGP Data:
- Prefix: `51.195.0.0/16`
- AS Path: `57866 16276`
- Route Stability: Stable (no recent changes)
- RPKI Valid: Yes, with DNSSEC validation.
- Subnet Abuse:
- Subnet: `51.195.244.161/24`
- Abuse Density: 61.18% (high-risk classification)
- Threat Siblings: 156/255 IPs in subnet flagged for abuse.
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**3. Observational History**
- Recent Activity (2026-06-08):
- BGP route stability confirmed.
- ASN 16276 (Ahrefs) remains allocated (9,244 days since registration).
- No changes in ownership or threat signals.
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**4. Relationships**
- Linked Entities:
- 58 relationships identified, all tied to OVH network `OVH_282347336`.
- No external domains or certificates linked.
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**5. Neighborhood Risk**
- Subnet Analysis:
- 100 neighboring IPs analyzed.
- 61% abuse density (100/165 IPs flagged).
- High-risk IPs: 156 with inherited risk scores (avg 24/100).
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**6. Actionable Insights**
- Monitor Subnet: The high abuse density in `51.195.244.161/24` suggests potential lateral movement or compromised hosts.
- Verify Ownership: Ahrefs Pte Ltd’s IP infrastructure appears legitimate, but further validation of their cloud configurations is recommended.
- Check for Anomalies: No open services or TLS certificates detected, but continuous monitoring of BGP routes is advised.
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Conclusion: This IP is part of a high-risk subnet with no direct malicious indicators. Focus on subnet-level monitoring and verify Ahrefs’ cloud security posture.
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 | 51.195.0.0/16 |
| RIR | ARIN |
| Country | — |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | proxy-uk000-san161.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-uk000-san161.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 | Tier 3 — Basic operator with some routing infrastructure |
🔌 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 | 24% | 2 | 4 |
| routing | 24% | 2 | 3 |
| services | 17% | 2 | 3 |
| ownership | 24% | 3 | 4 |
| reputation | 28% | 1 | 3 |
| geolocation | 25% | 2 | 2 |
| Overall | 24% | 12 | 19 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-16 21:01:17 UTC |
| Last Seen | 2026-06-28 04:03:00 UTC |
| Profile Built | 2026-06-28 22:08:49 UTC |
| Data Freshness | Live |
| Signal Types | 26 |
| Total Observations | 31 |
Full dossier details are available via our API.