51.161.65.27
IP Intelligence Briefing: 51.161.65.27/32
*Generated via IPDebrief Analysis*
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**1. Core Profile**
- Risk Score: 25 (Low Risk)
- Ownership:
- ASN: 16276 (OVH)
- Organization: Dmytro, Ahrefs Pte Ltd
- Subnet: 51.161.65.0/24
- Geolocation: Montreal, Quebec, Canada (ARIN-regulated)
- Threat Indicators: No malicious activity detected (no blacklists, campaigns, or Tor associations).
- Network Role: CloudCompute infrastructure (OVH-hosted, no residential/mobile traffic).
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**2. Observation History**
- Recent Activity (Last 30 Days):
- DNS resolution for `proxy-ca011-san27.ahrefs.net` (Ahrefs subdomain).
- Subnet classification as "mixed" with 0.34 abuse density.
- No persistent malicious behavior or threat persistence.
- Trend: Stable risk profile; no significant changes in signals.
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**3. Relationships**
- Network Associations:
- Linked to OVH-CUST-281059690 (same subnet).
- DNS ties to `proxy-ca011-san27.ahrefs.net` (Ahrefs infrastructure).
- No Known Malicious Relationships: No connections to C2 servers, phishing domains, or malicious certificates.
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**4. Neighborhood Analysis**
- Subnet: 51.161.65.0/24 (248 total IPs, 160 active).
- Risk Distribution:
- 76 IPs: Medium Risk (avg. 50 risk score).
- 24 IPs: Low Risk (avg. 25 risk score).
- 0 IPs: High Risk.
- Abuse Density: 34.27% (moderate risk in subnet).
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**5. Recommendations**
- Monitor Subnet: Due to 34% abuse density, investigate neighboring IPs for anomalies.
- Verify DNS: Confirm legitimacy of `proxy-ca011-san27.ahrefs.net` as part of Ahrefs' infrastructure.
- Baseline Behavior: No immediate action required for this IP, but maintain alerts for subnet-level changes.
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End of Briefing
*Generated from IPDebrief telemetry. For real-time updates, use IPDebrief's live dashboard.*
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-san27.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca011-san27.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 | |||
| 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 | 33% | 2 | 4 |
| routing | 13% | 1 | 1 |
| services | 13% | 1 | 1 |
| ownership | 19% | 2 | 2 |
| reputation | 22% | 1 | 3 |
| geolocation | 24% | 2 | 3 |
| Overall | 21% | 9 | 14 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-30 00:20:34 UTC |
| Last Seen | 2026-06-29 07:06:17 UTC |
| Profile Built | 2026-06-29 07:13:33 UTC |
| Data Freshness | Live |
| Signal Types | 21 |
| Total Observations | 21 |
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