5.39.1.228
IP Intelligence Briefing: 5.39.1.228
Date: 2026-06-10
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**1. Risk Profile**
- Overall Risk: Moderate (Score: 40)
- Provider Risk: 0 (OVH, CloudCompute)
- Threat Indicators: No malicious activity detected (no blacklists, campaigns, or DNS anomalies).
- Network Stability: Unstable (BGP route instability flagged).
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**2. Ownership & Geolocation**
- Organization: Ahrefs Pte Ltd (SEO tools provider).
- ASN: 16276 (OVH).
- Geolocation: France (FR), inferred via IP geolocation with 500km accuracy.
- Infrastructure: CloudCompute (OVH-hosted, likely a virtual server).
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**3. Network & Subnet Analysis**
- Subnet: 5.39.1.228/24
- Abuse Density: 56.25% (high abuse classification).
- Neighbor Risk:
- Total Siblings: 32 IPs
- Active Siblings: 7 (18 flagged as high-risk).
- Notable Neighbors:
- 5.39.1.248 (Risk: 65), 5.39.1.229 (Risk: 65).
- Subnet Stability: Routes unstable (0.56 abuse density).
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**4. Observed Behavior**
- Historical Signals (Last 30 Days):
- Consistent classification as CloudCompute (OVH).
- Subnet abuse density increased gradually.
- No spikes in DNS anomalies or threat indicators.
- DNS Associations:
- Linked to `proxy-fr005-san228.ahrefs.net` (Ahrefs’ infrastructure).
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**5. Threat & Security Context**
- Malicious Activity: None detected.
- Subnet Risks: High abuse density suggests potential for lateral movement or shared hosting compromises.
- Recommendations:
- Monitor subnet for unusual traffic patterns.
- Block high-risk neighbors (e.g., 5.39.1.248) if threat indicators emerge.
- Validate Ahrefs’ infrastructure for potential compromise.
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**6. Actionable Intelligence**
- SOC Analyst Notes:
- The IP is likely a legitimate cloud server but resides in a subnet with elevated risk.
- Investigate if Ahrefs’ infrastructure is under attack (e.g., DNS hijacking, compromised hosts).
- Consider blocking the subnet or implementing granular access controls if the network is deemed compromised.
End of Briefing
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | Ahrefs Pte Ltd Dmytro |
| ASN | AS16276 |
| Network Name | — |
| CIDR Block | — |
| RIR | RIPE |
| Country | — |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | proxy-fr005-san228.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-fr005-san228.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 | 31% | 2 | 4 |
| routing | 13% | 1 | 1 |
| services | 12% | 2 | 2 |
| ownership | 20% | 2 | 3 |
| reputation | 28% | 1 | 3 |
| geolocation | 33% | 2 | 3 |
| Overall | 23% | 10 | 16 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-20 05:45:02 UTC |
| Last Seen | 2026-06-28 11:15:37 UTC |
| Profile Built | 2026-06-29 05:20:04 UTC |
| Data Freshness | Live |
| Signal Types | 23 |
| Total Observations | 26 |
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