51.161.37.11
IP Intelligence Briefing: 51.161.37.11
Date: 2026-06-09
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**1. Core Profile**
- Risk Score: Low (25/100)
- Ownership:
- ASN: 16276 (OVH)
- Organization: Dmytro, Ahrefs Pte Ltd
- Subnet: 51.161.37.0/24
- Geolocation:
- Country: Canada (CA)
- City: Singapore
- Latitude/Longitude: Unavailable
- Network Role:
- Cloud Compute (OVH Hosting)
- No public services detected (ports closed)
- BGP Prefix: 51.161.0.0/17
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**2. Threat & Behavior**
- Threat Indicators:
- No malware, spam, or attack campaigns detected.
- No DNSBL listings or known malicious activity.
- Behavioral Observations:
- Last scanned: June 1, 2026 (no open ports or services).
- Traceroute data missing (potential data gap).
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**3. Network Relationships**
- DNS Associations:
- Linked to `proxy-ca005-san11.ahrefs.net` (Ahrefs infrastructure).
- Network Peers:
- Part of OVH subnet (51.161.37.0/24).
- 120 active siblings in subnet; 108 flagged as high-risk.
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**4. Subnet Neighborhood**
- Subnet: 51.161.37.0/24
- Abuse Density: 0.4286 (mixed classification: 46% low risk, 54% medium/high risk).
- Key Neighbors:
- 51.161.37.0–51.161.37.4: Low to medium risk.
- 51.161.37.5–51.161.37.100: Mixed risk profile.
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**5. Actionable Insights**
- SOC Recommendations:
- Monitor subnet for lateral movement or unusual traffic patterns.
- Validate DNS records for `proxy-ca005-san11.ahrefs.net` to ensure no spoofing.
- No immediate firewall rules required due to low risk.
- Context:
- IP is part of a legitimate cloud hosting environment (OVH/Ahrefs).
- Subnet has a mix of benign and potentially risky IPs; prioritize investigation of high-risk neighbors.
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Note: No direct malicious indicators detected, but subnet-level risks warrant further monitoring.
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-san11.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca005-san11.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 | 30% | 2 | 3 |
| routing | 27% | 2 | 3 |
| services | 15% | 2 | 2 |
| ownership | 26% | 3 | 3 |
| reputation | 28% | 1 | 3 |
| geolocation | 33% | 2 | 3 |
| Overall | 26% | 12 | 17 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-21 21:00:50 UTC |
| Last Seen | 2026-06-28 16:06:04 UTC |
| Profile Built | 2026-06-29 04:10:01 UTC |
| Data Freshness | Live |
| Signal Types | 24 |
| Total Observations | 27 |
Full dossier details are available via our API.