51.161.65.125
IP Intelligence Briefing: 51.161.65.125
*Generated for SOC Analysts*
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**1. Core Profile**
- Risk Score: Moderate (40/100).
- Owner: Ahrefs Pte Ltd (OVH network, ASN 16276).
- Geolocation:
- Reported: Singapore (CA country code discrepancy).
- Accuracy: 3,000 km radius.
- Network Role: Cloud compute infrastructure (OVH-hosted, no public services).
- Threat Indicators:
- No direct malicious indicators (no malware, spam, or known attacker flags).
- Subnet 51.161.65.0/24 has high abuse density (0.582) and 149 threat siblings.
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**2. Observation History**
- Recent Activity:
- Last observed June 13, 2026.
- Abuse Density: 0.582 (high risk).
- Network Stability: Route instability detected (fluctuating BGP paths).
- Ownership: No changes in ownership detected.
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**3. Relationships**
- Network: Linked to OVH-CUST-281059690 (same subnet).
- DNS: Resolves to proxy-ca011-san125.ahrefs.net (likely internal/legitimate).
- No External Threat Links: No correlations to known malware campaigns or malicious domains.
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**4. Neighborhood Analysis**
- Subnet: 51.161.65.0/24 (256 IPs).
- Risk Distribution:
- 98 IPs: Medium risk.
- 2 IPs: High risk.
- 149 threat siblings in subnet (potential compromise risk).
- Abuse Density: 58.2% of subnet IPs flagged for abuse.
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**5. Recommendations**
- Monitor Subnet: High abuse density suggests potential lateral movement or compromised infrastructure.
- Verify DNS: Confirm legitimacy of proxy-ca011-san125.ahrefs.net (Ahrefs may use internal DNS).
- Block Suspicious Neighbors: Consider blocking high-risk IPs in the 51.161.65.0/24 subnet.
- Geolocation Discrepancy: Investigate CA (Canada) vs. Singapore geolocation conflict.
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*Data sourced from IPDebrief. Use with caution; further investigation may be required for critical decisions.*
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-san125.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca011-san125.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 | 40% | 2 | 4 |
| routing | 13% | 1 | 1 |
| services | 21% | 2 | 2 |
| ownership | 19% | 2 | 2 |
| reputation | 21% | 1 | 2 |
| geolocation | 13% | 1 | 1 |
| Overall | 21% | 9 | 12 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-06-06 07:27:53 UTC |
| Last Seen | 2026-06-21 13:00:39 UTC |
| Profile Built | 2026-06-21 13:06:32 UTC |
| Data Freshness | Live |
| Signal Types | 21 |
| Total Observations | 23 |
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