54.39.203.159
IP Intelligence Briefing: 54.39.203.159
Date: 2026-06-15
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**1. Core Profile**
- Risk Score: Moderate (40/100)
- Provider: OVH (ASN 16276)
- Organization: Ahrefs Pte Ltd (OVH-CUST-281059687)
- Geolocation:
- City: Beauharnois, Quebec, Canada (CA)
- Geo Plausibility: False (RTT 27ms inconsistent with 5,629km distance)
- Network Role: Cloud compute infrastructure (OVH)
- Services: No open ports or TLS certificates detected.
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**2. Threat Indicators**
- Malicious Activity: None detected (no indicators, blacklists, or campaigns).
- Subnet Abuse:
- Subnet: 54.39.203.0/24
- Abuse Density: 52.55% (high_abuse classification)
- Threat Siblings: 134 IPs in subnet flagged as risky.
- DNS Associations:
- Linked to `proxy-ca008-san159.ahrefs.net` (Ahrefs infrastructure).
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**3. Observation History**
- Latest Signals (30d):
- Minimal Risk: 21.74% operator score.
- Geolocation Anomalies: RTT 27ms (expected >112ms for 5,629km).
- DNSSEC Valid: Yes; CAA records present.
- Threat Persistence: No persistent malicious activity.
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**4. Network Relationships**
- Shared Subnet: 255 IPs in 54.39.203.0/24.
- Key Associations:
- OVH Network: OVH-CUST-281059687 (255 IPs).
- DNS: `proxy-ca008-san159.ahrefs.net` (Ahrefs).
- Neighbor Risk Distribution:
- High Risk: 0 IPs
- Medium Risk: 95 IPs
- Low Risk: 5 IPs
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**5. Actionable Insights**
- SOC Recommendations:
- Monitor Subnet: 54.39.203.0/24 for unusual traffic patterns due to high abuse density.
- Verify Geolocation: Investigate RTT anomalies to confirm IP legitimacy.
- Block Suspicious Neighbors: Consider blocking high-risk IPs in the subnet (134 flagged).
- DNS Sinkholing: Mitigate potential DNS spoofing risks via DNSSEC enforcement.
- Threat Context:
- IP is part of OVH cloud infrastructure linked to Ahrefs. No direct malicious activity, but subnet has significant abuse.
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Next Steps: Validate geolocation anomalies, monitor subnet traffic, and correlate with Ahrefs' network behavior.
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-281059687 |
| CIDR Block | 54.39.203.0/24 |
| RIR | ARIN |
| Country | Singapore |
| Abuse Contact | — |
🌐 DNS Intelligence
| PTR | proxy-ca008-san159.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca008-san159.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 | 39% | 2 | 3 |
| routing | 13% | 1 | 1 |
| services | 15% | 2 | 2 |
| ownership | 15% | 2 | 2 |
| reputation | 22% | 1 | 2 |
| geolocation | 33% | 2 | 3 |
| Overall | 23% | 10 | 13 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-21 08:56:03 UTC |
| Last Seen | 2026-06-28 13:18:42 UTC |
| Profile Built | 2026-06-29 07:22:53 UTC |
| Data Freshness | Live |
| Signal Types | 20 |
| Total Observations | 23 |
Full dossier details are available via our API.