51.161.65.50
IP Intelligence Briefing: 51.161.65.50
*Generated via IPDebrief analysis*
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**Overview**
- Risk Score: 25 (Low Risk)
- Provider: OVH (AS16276)
- Ownership: Dmytro, Ahrefs Pte Ltd (OVH-CUST-281059690)
- Geolocation: Montreal, Quebec, Canada (CA)
- Network Role: Hosting / CloudCompute (OVH infrastructure)
- Threat Status: No malicious indicators detected (no blacklists, campaigns, or DNS abuse).
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**Key Findings**
1. Network Context:
- Part of the 51.161.65.0/24 subnet, classified as "mixed" with 30.77% abuse density.
- 76 of 247 sibling IPs in the subnet show threat activity (medium/high risk).
2. Hosting Environment:
- Identified as a hosting provider IP (OVH CloudCompute).
- No open ports, TLS certificates, or HTTP services detected.
3. Historical Trends:
- Consistently low-risk since 2026-06-09.
- No significant changes in geolocation, DNS, or threat signals.
4. Relationships:
- Linked to OVH-CUST-281059690 (same network).
- DNS records point to proxy-ca011-san50.ahrefs.net (Ahrefs Pte Ltd).
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**Neighbor Subnet Analysis**
- Subnet: 51.161.65.0/24
- Risk Distribution:
- Low Risk: 55 IPs
- Medium Risk: 45 IPs
- High Risk: 0 IPs
- Abuse Density: 30.77% (moderate risk in the broader network).
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**Recommendations**
1. Monitor Subnet: The 51.161.65.0/24 subnet contains risky neighbors. Use network segmentation to isolate critical assets.
2. Verify Hosting Use: Confirm the IP’s role as a hosting server. Ensure no unauthorized services (e.g., SSH, HTTP) are exposed.
3. Check DNS: Investigate the proxy-ca011-san50.ahrefs.net hostname for potential misconfigurations or misuse.
4. Baseline Behavior: Use historical data to establish baselines for the IP’s traffic patterns.
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*End of Briefing*
*Generated by IPDebrief – Cybersecurity Threat Intelligence Platform*
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-281059690 |
| CIDR Block | 51.161.65.0/24 |
| RIR | ARIN |
| Country | Singapore |
| Abuse Contact | — |
🌐 DNS Intelligence
| PTR | proxy-ca011-san50.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca011-san50.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 | 29% | 2 | 4 |
| routing | 13% | 1 | 1 |
| services | 12% | 2 | 2 |
| ownership | 19% | 2 | 2 |
| reputation | 31% | 1 | 3 |
| geolocation | 25% | 2 | 2 |
| Overall | 21% | 10 | 14 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-21 14:57:54 UTC |
| Last Seen | 2026-06-28 14:16:03 UTC |
| Profile Built | 2026-06-29 08:21:22 UTC |
| Data Freshness | Live |
| Signal Types | 20 |
| Total Observations | 24 |
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