51.161.37.6
IP Intelligence Briefing: 51.161.37.6/32
*Generated from IPDebrief data*
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**1. Risk Profile**
- Overall Risk Score: Moderate (40/100)
- Provider Score: 0 (unrated)
- Authority Score: 0 (unrated)
- Network Stability: Unstable (flagged as route-stable: false)
- Threat Indicators: No malicious activity detected (no blacklists, campaigns, or DNS abuse).
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**2. Ownership & Geolocation**
- Registered Owner: Ahrefs Pte Ltd (OVH-CUST-281059684)
- ASN: 16276 (OVH)
- Geolocation:
- Country: Canada (CA)
- City: Singapore
- Geo Validation: Plausibility rejected (distance/RTT data unavailable).
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**3. Network & Service Context**
- Network Role: Hosting service (OVH CloudCompute)
- Subnet: 51.161.37.0/24
- Subnet Abuse Density: 58.27% (high_abuse classification)
- Neighbor Risk: 95/100 neighbors flagged as medium/low risk; 148 threat siblings.
- Services:
- No open ports or TLS services detected.
- DNS: Resolves to `proxy-ca005-san6.ahrefs.net` (ahrefs.net).
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**4. Threat & Behavioral Analysis**
- Threat History:
- Last observed in June 2026 (no persistent malicious activity).
- No correlation with known campaigns, honeypots, or spam sources.
- Behavioral Flags:
- No Honeypot hits, enumeration attempts, or suspicious HTTP banners.
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**5. Recommendations**
- Monitoring: Track subnet (51.161.37.0/24) for abnormal traffic due to high abuse density.
- Firewall: Consider blocking the subnet if hosting services are not required.
- Validation: Verify geolocation anomalies (Singapore vs. CA registration).
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Source: IPDebrief (June 2026)
Note: No immediate actionable threats detected, but subnet-level risks warrant further investigation.
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-san6.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca005-san6.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 | 31% | 2 | 4 |
| routing | 13% | 1 | 1 |
| services | 12% | 2 | 2 |
| ownership | 19% | 2 | 2 |
| reputation | 31% | 1 | 3 |
| geolocation | 31% | 2 | 3 |
| Overall | 23% | 10 | 15 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-10 16:14:39 UTC |
| Last Seen | 2026-06-27 18:03:19 UTC |
| Profile Built | 2026-06-28 12:09:09 UTC |
| Data Freshness | Live |
| Signal Types | 21 |
| Total Observations | 27 |
Full dossier details are available via our API.