54.39.136.140
IP Intelligence Dossier
Your IP: 216.73.216.123
🤖 Witness AIThis summary was generated by AI and may contain inaccuracies. Verify critical details independently.
IP Intelligence Briefing: 54.39.136.140
Date: June 15, 2026
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**1. Core Profile**
- Risk Score: 40 (Moderate Risk)
- Ownership: Owned by OVH (AS16276), netname *OVH-CUST-281059681*.
- Geolocation: Canada (QC, Beauharnois), latitude 45.3161, longitude -73.8736.
- Network Role: Cloud compute instance (OVH infrastructure), no residential/mobile origin.
- Threat Indicators: No malicious activity detected (no blacklists, campaigns, or DNS anomalies).
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**2. Network & Subnet Analysis**
- Subnet: 54.39.136.0/24 (OVH-managed).
- Subnet Abuse Density: 54.55% (high abuse density).
- Neighbor Risk:
- 138 of 253 IPs in the subnet flagged as risky (medium/high risk).
- Active siblings: 122 (48.2% of subnet).
- Recommendation: Monitor neighbors for lateral movement or network compromise.
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**3. Relationships & DNS**
- Linked Hostname: `proxy-ca002-san140.ahrefs.net` (Ahrefs Pte Ltd).
- DNS:
- PTR record confirms ownership by Ahrefs.
- No SPF/DMArc records detected.
- Certificates/TLS: No TLS certificates or web services detected.
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**4. Historical Observations (Last 30 Days)**
- Risk Trends: Stable minimal risk (score 0.2174).
- Activity:
- No DNS anomalies, honeypot hits, or service scans.
- Subnet route stability: 0 changes in 30 days.
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**5. Behavioral & Technical Insights**
- Services: No open ports or HTTP services detected.
- Routing: BGP prefix 54.39.0.0/16, RPKI valid, no route hijacks.
- Email Reputation: No email-related risks.
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**6. SOC Actionable Guidance**
- Monitor: Subnet 54.39.136.0/24 for increased abuse density.
- Verify: Ahrefs Pte Ltd’s infrastructure for potential misconfigurations.
- Firewall: No immediate blocking required; focus on subnet-level monitoring.
- Context: IP is likely benign but resides in a high-risk subnet. Investigate if linked to broader network compromises.
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End of Briefing
*Generated via IPDebrief threat intelligence platform.*
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-281059681 |
| CIDR Block | 54.39.136.0/24 |
| RIR | ARIN |
| Country | Singapore |
| Abuse Contact | — |
🌐 DNS Intelligence
| PTR | proxy-ca002-san140.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca002-san140.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 | Tier 3 — Basic operator with some routing infrastructure |
🔌 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
No certificate
Issued by —
N/A
| SANs | None |
| Valid From | — |
| Valid Until | — |
🎯 Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 36% | 2 | 4 |
| routing | 27% | 2 | 3 |
| services | 15% | 2 | 2 |
| ownership | 30% | 3 | 3 |
| reputation | 31% | 1 | 3 |
| geolocation | 33% | 2 | 3 |
| Overall | 29% | 12 | 18 |
Coverage: 6/6 dimensions · Data sufficiency: sufficient
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
⚠ Claimed geolocation contradicts RTT physics measurement
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-19 21:40:51 UTC |
| Last Seen | 2026-06-28 10:22:07 UTC |
| Profile Built | 2026-06-29 04:25:56 UTC |
| Data Freshness | Live |
| Signal Types | 24 |
| Total Observations | 29 |
🔍 24 signal types · 29 observations collected
This report is generated from 24+ 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.
ℹ️ About This Report
All data shown is publicly available network metadata — 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.