54.39.136.45
IP Intelligence Briefing: 54.39.136.45
Date: 2026-06-08
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**1. IP Profile**
- Risk Score: 50 (Moderate Risk)
- Ownership:
- ISP: OVH (ASN 16276)
- Organization: Dmytro, Ahrefs Pte Ltd
- Network: OVH-CUST-281059681
- Geolocation:
- Country: Canada (QC, Beauharnois)
- Accuracy: 3000 km radius
- Network Role: Hosting (firewalled, no open services)
- DNS:
- PTR Hostname: `proxy-ca002-san45.ahrefs.net`
- Domain: `ahrefs.net`
- Email Auth: No SPF/DMArC records
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**2. Threat Observations**
- No Direct Threat Indicators: No malware, spam, or known attacker activity detected.
- Subnet Risk:
- Abuse Density: 40.57% (moderate)
- Threat Siblings: 99 IPs in the /24 subnet flagged as risky.
- Active Neighbors: 80 IPs (16 inherited risk).
- Historical Trends:
- Stable risk profile with no significant changes in 30 days.
- Mixed classification (some neighbors show malicious activity).
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**3. Network Relationships**
- Linked Entities:
- Network: OVH-CUST-281059681
- DNS: `proxy-ca002-san45.ahrefs.net` (Ahrefs infrastructure)
- Subnet: `54.39.136.0/24`
- Key Neighbors:
- 62 IPs with medium risk (25–50 score)
- 38 IPs with low risk
- Notable Risks: 16 IPs in subnet flagged for abuse.
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**4. Recommendations**
- Monitor Subnet: High abuse density in the subnet warrants closer scrutiny of traffic patterns.
- Check DNS Activity: Validate DNS resolution for `proxy-ca002-san45.ahrefs.net` for anomalies.
- Network Segmentation: Ensure isolation of hosting infrastructure to prevent lateral movement.
- Neighbor Analysis: Investigate high-risk neighbors for potential compromise or reconnaissance.
Conclusion: The IP is a legitimate hosting server under Ahrefs, but its subnet contains a moderate risk profile. SOC teams should monitor traffic and subnet activity for suspicious behavior.
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*Generated via IPDebrief threat intelligence tools.*
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-san45.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca002-san45.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 | |||
| 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 | 49% | 2 | 5 |
| routing | 27% | 2 | 3 |
| services | 8% | 1 | 1 |
| ownership | 30% | 3 | 3 |
| reputation | 31% | 1 | 3 |
| geolocation | 33% | 2 | 3 |
| Overall | 30% | 11 | 18 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-19 21:40:51 UTC |
| Last Seen | 2026-06-28 10:22:27 UTC |
| Profile Built | 2026-06-29 04:28:15 UTC |
| Data Freshness | Live |
| Signal Types | 22 |
| Total Observations | 29 |
Full dossier details are available via our API.