51.161.65.223
IP Intelligence Briefing: 51.161.65.223
Date: June 18, 2026
Key Findings:
- Risk Profile: Moderate risk (score: 40) with no direct threat indicators (no malware, phishing, or spam associations).
- Ownership: Hosted by OVH under Dmytro, Ahrefs Pte Ltd (ASN 16276). Assigned to a cloud compute subnet (51.161.65.0/24).
- Geolocation: Registered to Singapore (CA), but geo-validation flagged suspicious RTT (26ms) for a 6082km distance, suggesting potential spoofing or residential/proxy use.
- Network Role: Cloud-hosted server (OVH infrastructure), no public services detected (open ports, TLS, or HTTP).
- Threat Context: Subnet (51.161.65.223/24) has moderate abuse density (58.98% of neighbors classified as high/medium risk).
- Neighbor Analysis: 100 IPs in the subnet; 98 are medium-risk, 2 low-risk. No direct abuse links to the target IP.
Actionable Insights:
1. Monitor Geolocation Anomalies: The IP’s RTT discrepancy indicates possible spoofing. Verify if the IP is part of a residential/proxy network despite its cloud-hosted classification.
2. Subnet Risk Exposure: The subnet’s high abuse density (58.98%) suggests potential lateral movement risks. Prioritize monitoring traffic patterns within this subnet.
3. Ownership Verification: Ahrefs Pte Ltd is a legitimate entity, but ensure no unauthorized use of the subnet. Check for unusual DNS or routing anomalies.
4. No Immediate Mitigation Required: No active threats or malicious indicators detected. However, maintain vigilance due to the subnet’s risk profile.
Recommendation:
- Add the subnet (51.161.65.0/24) to monitoring lists for abnormal traffic patterns.
- Validate the IP’s geolocation context with additional probes if suspicious activity is observed.
- Review OVH’s security practices for cloud-hosted infrastructure to mitigate potential misconfigurations.
Tools Used: IPDebrief Profile, History, Relationships, Neighbors.
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-san223.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca011-san223.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 | 31% | 2 | 4 |
| routing | 13% | 1 | 1 |
| services | 15% | 2 | 2 |
| ownership | 19% | 2 | 2 |
| reputation | 31% | 1 | 3 |
| geolocation | 30% | 2 | 3 |
| Overall | 23% | 10 | 15 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-07 23:04:25 UTC |
| Last Seen | 2026-06-27 06:26:06 UTC |
| Profile Built | 2026-06-28 00:29:51 UTC |
| Data Freshness | Live |
| Signal Types | 23 |
| Total Observations | 28 |
Full dossier details are available via our API.