54.39.136.245
IP Intelligence Briefing: 54.39.136.245
Date: 2026-06-08
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**1. Core Profile**
- Risk Score: 25 (Low Risk)
- Ownership: Registered to Ahrefs Pte Ltd (OVH-CUST-281059681)
- Geolocation: Canada (QC, Beauharnois)
- Network Role: Cloud compute instance (OVH infrastructure)
- Threat Indicators: No malicious activity detected (no indicators, blacklists, or campaigns).
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**2. Historical Observations**
- Signal Stability: Consistent low-risk profile since 2026-06-08.
- Key Observations:
- DNS resolution for `proxy-ca002-san245.ahrefs.net` (Ahrefs infrastructure).
- Operator score of 0.2174 (Minimal risk).
- No changes in routing or services detected.
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**3. Relationships**
- Network Affiliation:
- Part of OVH network (ASN 16276).
- Linked to `proxy-ca002-san245.ahrefs.net` (DNS association).
- Subnet Context:
- Subnet `54.39.136.0/24` with mixed risk (100 neighbors, 62 medium/low risk).
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**4. Subnet Neighbors**
- Abuse Density: 0.3975 (moderate risk in subnet).
- Neighbor Risk:
- 38 low-risk, 62 medium-risk neighbors.
- Notable: 97 neighbors flagged as potential threats.
- Recommendation: Monitor subnet for anomalous activity due to mixed risk.
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**5. Security Actions**
- Firewall Rules: No immediate action required (low-risk profile).
- Mitigation: Continue monitoring for unusual traffic patterns or subnet-level changes.
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Conclusion:
54.39.136.245 is a legitimate cloud compute instance managed by Ahrefs via OVH. No malicious activity detected, but its subnet contains a mix of low/medium-risk IPs. SOC teams should monitor the subnet for potential lateral movement or abuse.
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-san245.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca002-san245.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 | 30% | 2 | 3 |
| routing | 13% | 1 | 1 |
| services | 15% | 2 | 2 |
| ownership | 19% | 2 | 2 |
| reputation | 31% | 1 | 3 |
| geolocation | 33% | 2 | 3 |
| Overall | 23% | 10 | 14 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-19 15:39:21 UTC |
| Last Seen | 2026-06-28 09:30:24 UTC |
| Profile Built | 2026-06-29 03:35:29 UTC |
| Data Freshness | Live |
| Signal Types | 20 |
| Total Observations | 24 |
Full dossier details are available via our API.