54.39.6.206
IP Intelligence Briefing: 54.39.6.206
Date: 2026-06-11
---
**1. Core Profile**
- Risk Score: 50 (Moderate Risk)
- Ownership: Owned by Ahrefs Pte Ltd (OVH ASN 16276).
- Geolocation: Canada (QC, Beauharnois).
- Network Role: CloudCompute infrastructure (OVH-hosted).
- DNS: Resolves to `proxy-ca001-san206.ahrefs.net` (Ahrefs proxy).
- Services: No open ports or TLS certificates detected.
---
**2. Threat & Behavior**
- Threat Indicators: No direct malicious activity (no blacklists, spam, or campaigns).
- Network Stability: Subnet (`54.39.6.0/24`) has 0.51 abuse density, with 126/245 IPs flagged as high-risk.
- Historical Signals:
- Consistent geolocation and DNS records since June 2026.
- No spikes in threat activity or network anomalies.
---
**3. Relationships & Context**
- Linked Entities:
- Same OVH network (`OVH-CUST-281059680`).
- DNS association with `proxy-ca001-san206.ahrefs.net` (Ahrefs proxy).
- Subnet Neighbors:
- 140 active IPs in the subnet, 126 flagged as high-risk.
- 21 low-risk, 79 medium-risk IPs.
---
**4. Actionable Insights**
- Risk Context: Moderate risk tied to the subnet’s abuse density, not the IP itself.
- Recommendations:
- Monitor the subnet for lateral movement or increased risk.
- Consider blocking the IP if it starts showing open ports or suspicious DNS behavior.
- Use the provided firewall rules for immediate isolation.
---
**5. Security Actions**
- Firewall Rules:
- iptables: `iptables -A INPUT -s 54.39.6.206 -j DROP`
- Cloudflare WAF: Block IP with rule `ip.src eq 54.39.6.206`
- AWS WAF: Add `54.39.6.206/32` to a rule with description "IPDebrief risk 50".
---
Next Steps:
- Validate if the IP’s role aligns with Ahrefs’ legitimate infrastructure.
- Correlate with other subnets in the OVH network for broader risk assessment.
- Retest in 30 days to confirm persistence of risk.
Threat Level: Low to Moderate (subnetwork risk > individual IP risk).
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-san206.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca001-san206.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 | 32% | 2 | 4 |
| routing | 8% | 1 | 1 |
| services | 15% | 2 | 2 |
| ownership | 19% | 2 | 2 |
| reputation | 32% | 1 | 3 |
| geolocation | 27% | 2 | 3 |
| Overall | 22% | 10 | 15 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-25 18:48:27 UTC |
| Last Seen | 2026-06-29 02:12:52 UTC |
| Profile Built | 2026-06-29 08:15:29 UTC |
| Data Freshness | Live |
| Signal Types | 21 |
| Total Observations | 23 |
Full dossier details are available via our API.