54.39.136.136
IP Intelligence Briefing: 54.39.136.136
*Generated via IPDebrief Analysis*
---
**Key Risk Assessment**
- Risk Score: 25 (Low Risk)
- Provider: OVH (ASN 16276)
- Network Role: Cloud Hosting (OVH-CUST-281059681)
- Threat Indicators: No known malicious activity, spam, or campaigns.
---
**Geolocation & Ownership**
- Location: Canada (Quebec, Beauharnois)
- ASN: 16276 (OVH)
- Organization: Dmytro, Ahrefs Pte Ltd
- Subnet: 54.39.136.0/24
- Abuse Density: 38.93% (mixed classification)
Note: Geolocation validation flagged anomalous RTT (31ms) for 5,628km distance, suggesting potential spoofing or synthetic data.
---
**Network & Subnet Analysis**
- Subnet Activity:
- Total IPs: 244
- Active IPs: 74
- Threat IPs: 95 (medium/high risk)
- Abuse Density: 0.3893 (moderate risk)
- Neighbors:
- 11 low-risk IPs, 89 medium-risk IPs, 0 high-risk IPs.
---
**Threat & Security Context**
- DNS:
- PTR hostname: `proxy-ca002-san136.ahrefs.net`
- Domain: `ahrefs.net` (legitimate, no email auth detected).
- Services: No open ports or TLS certificates observed.
- Routing:
- BGP prefix: `54.39.0.0/16`
- Route stability: Unstable (0 changes in 30d).
---
**Actionable Insights**
1. Monitor Subnet: The 54.39.136.0/24 subnet contains 95 IPs with medium/high risk. Investigate potential lateral movement or shared infrastructure risks.
2. Verify Geolocation: The IP’s reported location in Quebec may be spoofed. Validate with additional geolocation sources or network metadata.
3. Check Hosting Provider: OVH’s cloud compute infrastructure is legitimate, but ensure Ahrefs’ usage aligns with expected traffic patterns.
4. Subnet Segmentation: Consider isolating high-risk neighbors in the subnet to limit potential exposure.
---
Conclusion: 54.39.136.136 is a low-risk IP associated with a cloud hosting provider, but its subnet contains a notable number of medium-risk IPs. While no direct threats are detected, the geolocation anomalies and subnet context warrant further monitoring.
Tools Used: `ipdebrief_profile`, `ipdebrief_history`, `ipdebrief_relationships`, `ipdebrief_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-281059681 |
| CIDR Block | 54.39.136.0/24 |
| RIR | ARIN |
| Country | Singapore |
| Abuse Contact | — |
🌐 DNS Intelligence
| PTR | proxy-ca002-san136.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca002-san136.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 | 8% | 1 | 1 |
| services | 17% | 2 | 3 |
| ownership | 12% | 2 | 2 |
| reputation | 28% | 1 | 3 |
| geolocation | 33% | 2 | 3 |
| Overall | 20% | 10 | 16 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-12 15:48:24 UTC |
| Last Seen | 2026-06-27 21:51:02 UTC |
| Profile Built | 2026-06-28 15:56:56 UTC |
| Data Freshness | Live |
| Signal Types | 21 |
| Total Observations | 26 |
Full dossier details are available via our API.