51.161.65.52
IP Intelligence Dossier
Your IP: 216.73.216.123
π€ Witness AIThis summary was generated by AI and may contain inaccuracies. Verify critical details independently.
IP Threat Intelligence Briefing: 51.161.65.52
Date: 2026-06-15
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**1. IP Profile**
- Risk Score: 50 (Moderate Risk)
- Ownership: Registered to Ahrefs Pte Ltd (OVH ASN 16276), with CIDR block 51.161.65.0/24.
- Geolocation: Montreal, Canada (QC).
- Network Role: Cloud compute infrastructure (OVH-hosted).
- Threat Indicators: No malicious activity detected (no indicators, abuse confidence, or spam).
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**2. Observation History**
- Subnet Abuse Density: 0.6094 (high_abuse classification).
- Neighbor Risk: 96/100 IPs in the subnet are medium-risk, 4 are low-risk.
- Stability: Subnet shows unstable routing (route changes in last 30 days).
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**3. Relationships**
- Linked to OVH-CUST-281059690 network.
- DNS: Resolves to proxy-ca011-san52.ahrefs.net (no email auth records).
- No direct ties to known malicious campaigns or domains.
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**4. Neighborhood Analysis**
- Subnet: 51.161.65.52/24
- Abuse Density: 0.6094 (high_abuse classification).
- Active Siblings: 172 IPs in subnet, 132 flagged as threats.
- Inherited Risk: 20% risk from subnet context.
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**5. Recommended Actions**
- Block the IP: Implement firewall rules to block traffic from 51.161.65.52 (see tool response for rules).
- Monitor Subnet: High abuse density in the subnet suggests monitoring for lateral movement orε ³θ threats.
- Verify Ownership: Confirm Ahrefs Pte Ltdβs legitimate use of the IP, as it is a cloud provider.
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Conclusion: While the IP itself shows no direct malicious activity, its location in a high-abuse subnet (51.161.65.0/24) warrants caution. Block the IP to mitigate potential risks from the subnetβs broader threat context.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
π’ 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 | β |
π DNS Intelligence
| PTR | proxy-ca011-san52.ahrefs.net |
| Forward Confirmed | No β PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca011-san52.ahrefs.net |
π DNS Hygiene
| Hygiene Score | 40% (Fair) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Not verified |
| DNSSEC | Valid |
| CAA | Present |
βοΈ Network Classification
| Infrastructure | Infrastructure / Datacenter |
| Service Purpose | Firewalled / No Services |
| Network Tier | Hosting β Infrastructure provider without advanced routing |
π 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 | β |
| HTTP Title | β |
π TLS Certificate
No certificate
Issued by β
N/A
| SANs | None |
| Valid From | β |
| Valid Until | β |
π― Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 35% | 2 | 3 |
| routing | 13% | 1 | 1 |
| services | 12% | 2 | 2 |
| ownership | 15% | 2 | 2 |
| reputation | 22% | 1 | 2 |
| geolocation | 33% | 2 | 3 |
| Overall | 22% | 10 | 13 |
Coverage: 6/6 dimensions Β· Data sufficiency: sufficient
| Data Coherence | Mostly Consistent (80%) β 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
β Claimed geolocation contradicts RTT physics measurement
π Observation Timeline π Live
| First Seen | 2026-05-21 14:57:54 UTC |
| Last Seen | 2026-06-28 14:16:13 UTC |
| Profile Built | 2026-06-29 02:20:21 UTC |
| Data Freshness | Live |
| Signal Types | 20 |
| Total Observations | 23 |
π 20 signal types Β· 23 observations collected
This report is generated from 20+ independent intelligence signals including
ownership records, DNS analysis, BGP routing, TLS certificates, port scanning, threat feeds,
behavioral fingerprinting, and more.
Full dossier details are available via our API.
Full dossier details are available via our API.
βΉοΈ About This Report
All data shown is publicly available network metadata β IP addresses do not reliably identify individuals.
Assessments are probabilistic and should not be used as sole basis for access control decisions.
To report an issue or request data review, contact admin@ipdebrief.com.