51.161.37.80
IP Intelligence Briefing: 51.161.37.80
Date: 2026-06-10
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**1. Risk Profile**
- Risk Score: 50 (Moderate Risk)
- Provider: OVH (ASN 16276)
- Organization: Ahrefs Pte Ltd (OVH-CUST-281059684)
- Geolocation:
- Country: Canada (CA)
- City: Singapore (discrepancy noted; may indicate misconfiguration or spoofing)
- Coordinates: Latitude 56.13, Longitude -106.35 (3000km accuracy radius)
- Network Role: Cloud compute infrastructure (OVH-hosted, no public services detected)
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**2. Threat Indicators**
- No malicious indicators detected (no blacklists, spam, or known attacker associations).
- DNS Associations: Linked to `proxy-ca005-san80.ahrefs.net` (Ahrefs Pte Ltd).
- BGP/Network:
- Subnet: `51.161.37.0/24`
- Abuse density: 43.25% (mixed classification: 17 inherited risk, 109 threat siblings).
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**3. Observation History**
- Recent Activity (2026-06-10):
- Geolocation signal with 35% confidence.
- DNS listings (8 total lists, 1 listed; no high-severity threats).
- Subnet abuse density analysis (mixed risk).
- Stability: No persistent malicious activity; ownership unchanged.
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**4. Network Relationships**
- Neighbors (51.161.37.0/24):
- Risk Distribution: 79 medium-risk IPs, 21 low-risk IPs.
- Notable Neighbors:
- `51.161.37.0` (50/50 risk/authority score)
- `51.161.37.1` (25/50)
- `51.161.37.2` (40/50)
- Abuse Density: 43.25% (substantial risk in subnet).
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**5. Recommendations**
- Monitor Subnet: Elevated risk in `51.161.37.0/24` (43.25% abuse density).
- Verify Geolocation: Investigate Singapore/Canada discrepancy; potential spoofing or misconfig.
- Check DNS Hostnames: Scrutinize `proxy-ca005-san80.ahrefs.net` for anomalous behavior.
- Network Segmentation: Ensure isolation of cloud-hosted infrastructure to prevent lateral movement.
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Source: IPDebrief Threat Intelligence Platform
Note: No immediate action required, but ongoing monitoring is advised due to subnet risk and unclear geolocation data.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Dmytro, Ahrefs Pte Ltd |
| ASN | AS16276 |
| Network Name | OVH-CUST-281059684 |
| CIDR Block | 51.161.37.0/24 |
| RIR | ARIN |
| Country | Singapore |
| Abuse Contact | — |
🌐 DNS Intelligence
| PTR | proxy-ca005-san80.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca005-san80.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 | 32% | 2 | 4 |
| routing | 8% | 1 | 1 |
| services | 15% | 2 | 2 |
| ownership | 19% | 2 | 2 |
| reputation | 32% | 1 | 3 |
| geolocation | 25% | 2 | 2 |
| Overall | 22% | 10 | 14 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-25 00:41:36 UTC |
| Last Seen | 2026-06-29 01:01:57 UTC |
| Profile Built | 2026-06-29 07:04:26 UTC |
| Data Freshness | Live |
| Signal Types | 22 |
| Total Observations | 25 |
Full dossier details are available via our API.