54.39.6.16
IP Intelligence Briefing: 54.39.6.16/32
Date: 2026-06-18
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**1. IP Profile**
- Risk Score: Moderate (40/100)
- Ownership:
- ASN: 16276 (OVH)
- Organization: Dmytro, Ahrefs Pte Ltd
- Subnet: 54.39.6.0/24
- Geolocation:
- Country: Canada (QC, Beauharnois)
- Plausibility: Low (RTT inconsistency: 27ms vs. 5,629km distance)
- Network Role: Cloud compute infrastructure (OVH-hosted).
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**2. Threat Observations**
- Subnet Abuse:
- Abuse Density: 0.625 (high-risk classification).
- Threat Siblings: 160 IPs in the 54.39.6.0/24 subnet flagged as malicious.
- Inherited Risk: 25 (subnet-level risk).
- Activity Trends:
- Observed on June 14 and 18, with stable abuse density.
- No direct malicious indicators (no malware, phishing, or C2 activity).
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**3. Relationships**
- Network Links:
- Directly tied to OVH-CUST-281059680 (ASN 16276).
- No direct links to known malicious organizations or domains.
- DNS:
- PTR hostname: `proxy-ca001-san16.ahrefs.net` (Ahrefs subdomain).
- No email authentication (SPF/DKIM) detected.
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**4. Neighborhood Analysis**
- Subnet: 54.39.6.0/24 (256 IPs).
- Risk Distribution:
- High Risk: 0 IPs
- Medium Risk: 100 IPs
- Low Risk: 0 IPs
- Abuse Density: Subnet classified as high_abuse (0.625).
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**5. Recommendations**
- Monitor Subnet: The 54.39.6.0/24 subnet has a high abuse density and 160 malicious siblings. Investigate potential lateral movement or compromised hosts.
- Geolocation Discrepancy: The IP’s low RTT (27ms) vs. distance (5,629km) suggests spoofed geolocation. Verify if the IP is part of a CDN or proxy network.
- Network Segmentation: Consider isolating this subnet if it hosts sensitive services, given its association with OVH’s cloud infrastructure.
Next Steps: Correlate with internal logs for unusual traffic patterns and validate the subnet’s activity via passive DNS monitoring.
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Source: 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-281059680 |
| CIDR Block | 54.39.6.0/24 |
| RIR | ARIN |
| Country | Singapore |
| Abuse Contact | — |
🌐 DNS Intelligence
| PTR | proxy-ca001-san16.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca001-san16.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 | 24% | 2 | 4 |
| routing | 13% | 1 | 1 |
| services | 12% | 2 | 2 |
| ownership | 15% | 2 | 2 |
| reputation | 28% | 1 | 3 |
| geolocation | 35% | 2 | 3 |
| Overall | 21% | 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 23:04:29 UTC |
| Last Seen | 2026-06-27 08:40:05 UTC |
| Profile Built | 2026-06-28 02:46:34 UTC |
| Data Freshness | Live |
| Signal Types | 24 |
| Total Observations | 29 |
Full dossier details are available via our API.