54.39.136.112
IP Intelligence Briefing: 54.39.136.112
Date: 2026-06-09
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**1. IP Profile**
- Risk Score: 25 (Low Risk)
- Ownership: Registered to Ahrefs Pte Ltd (OVH customer, ASN 16276).
- Geolocation: Canada (QC, Beauharnois). Geolocation plausibility is false due to RTT anomalies.
- Network Role: CloudCompute infrastructure (OVH-hosted, no residential/mobile traffic).
- DNS: Linked to `proxy-ca002-san112.ahrefs.net` (Ahrefs domain).
- Threat Indicators: No malicious activity detected (no blacklists, campaigns, or spam sources).
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**2. Observation History**
- Recent Activity:
- Last observed on 2026-06-09 with DNS resolution to `ahrefs.net` (CAA records validated).
- Stability score: 0 (no routing anomalies).
- No significant changes in risk or threat signals over the past 30 days.
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**3. Relationships**
- Network Associations:
- Same subnet (`54.39.136.0/24`) with OVH-CUST-281059681.
- DNS ties to ahrefs.net (no email auth records).
- Control Plane:
- BGP prefix `54.39.0.0/16` (OVH network).
- DNSSEC valid, CAA records present.
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**4. Neighborhood Analysis**
- Subnet: `54.39.136.0/24` (246 total IPs).
- Abuse Density: 0.41 (moderate risk).
- Neighbor Risk:
- 101 IPs flagged as high/medium risk.
- 86 active IPs in subnet.
- Recommendation: Monitor subnet for lateral movement or abuse patterns.
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**5. Threat Assessment**
- Current Status: No active threats or malicious campaigns.
- Long-Term Risk: Low, but subnet has mixed abuse density.
- Actionable Insight:
- Ahrefs infrastructure appears legitimate, but monitor for unexpected DNS changes or subnet-wide anomalies.
- No immediate mitigation required, but maintain baseline monitoring.
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Prepared by: IPDebrief
Note: This briefing reflects data as of 2026-06-09. Continuous monitoring recommended for dynamic environments.
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-san112.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca002-san112.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 | 33% | 2 | 4 |
| routing | 13% | 1 | 1 |
| services | 15% | 2 | 2 |
| ownership | 15% | 2 | 2 |
| reputation | 28% | 1 | 3 |
| geolocation | 33% | 2 | 3 |
| Overall | 23% | 10 | 15 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-22 03:10:29 UTC |
| Last Seen | 2026-06-28 17:58:51 UTC |
| Profile Built | 2026-06-29 06:03:21 UTC |
| Data Freshness | Live |
| Signal Types | 20 |
| Total Observations | 22 |
Full dossier details are available via our API.