51.161.65.6
IP Intelligence Briefing: 51.161.65.6
*Generated via IPDebrief Analysis*
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**Core Profile**
- Risk Score: 25 (Low Risk)
- Ownership: Registered to Ahrefs Pte Ltd (OVH ASN 16276), Singapore.
- Geolocation: Singapore (country), no city/region specified.
- Network Role: Cloud compute instance (OVH infrastructure), no residential/mobile traffic.
- Threat Indicators: No malicious activity detected (zero threat feeds, DNSBL listings, or campaigns).
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**Observation History**
- Recent Activity:
- DNS resolution to `proxy-ca011-san6.ahrefs.net` (AHREFS domain).
- Stable network classification as "CloudCompute" since June 2026.
- No changes in ownership or threat signals over 30 days.
- Key Signals:
- DNSSEC valid, CAA records present.
- No Tor, VPN, or proxy associations.
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**Relationships**
- Network: Linked to OVH subnet `51.161.0.0/17` (shared with 248 IPs).
- DNS: Direct association with `ahrefs.net` (proxy hostname).
- Subnet: Part of a mixed-risk /24 subnet (abuse density 30.65%).
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**Neighborhood Analysis**
- Subnet: `51.161.65.6/24` (256 IPs).
- Risk Distribution: 40% low risk, 60% medium risk (no high-risk IPs).
- Neighbor Highlights:
- 132 active IPs, 76 flagged as risky.
- Abuse density suggests potential for subnet-level compromise.
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**Actionable Insights**
- No Immediate Threat: IP is associated with a legitimate cloud provider (OVH) and shows no malicious indicators.
- Monitor Subnet: Given the 30.65% abuse density, monitor neighboring IPs for anomalous behavior.
- Verify DNS: Confirm `ahrefs.net` DNS resolution patterns for potential enumeration risks.
Conclusion: 51.161.65.6 is a low-risk, cloud-hosted IP with no malicious activity detected. Focus on subnet-level monitoring and DNS hygiene.
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*Generated by IPDebrief | © 2026 Jason Alberino*
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-san6.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca011-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 | 26% | 2 | 4 |
| routing | 13% | 1 | 1 |
| services | 12% | 2 | 2 |
| ownership | 15% | 2 | 2 |
| reputation | 28% | 1 | 3 |
| geolocation | 25% | 2 | 2 |
| Overall | 20% | 10 | 14 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-22 03:10:08 UTC |
| Last Seen | 2026-06-28 17:41:34 UTC |
| Profile Built | 2026-06-29 05:44:57 UTC |
| Data Freshness | Live |
| Signal Types | 21 |
| Total Observations | 24 |
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