54.39.136.64
IP Intelligence Briefing: 54.39.136.64
*Generated via IPDebrief Analysis*
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**1. Core Profile**
- Risk Score: 40 (Moderate Risk)
- Ownership: Registered to Ahrefs Pte Ltd (OVH ASN 16276).
- Geolocation: Canada (QC, Beauharnois).
- Network Role: Cloud Compute infrastructure (OVH-hosted).
- Threat Indicators: No malicious activity detected (no indicators, spam, or campaigns).
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**2. Observation History**
- Stability: Stable routing (no recent route changes).
- Key Signals:
- BGP communities and DNSSEC validation observed.
- DNS resolution linked to `proxy-ca002-san64.ahrefs.net` (Ahrefs subdomain).
- No recent ownership transfers (allocated since 2001).
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**3. Network Relationships**
- DNS Associations:
- Linked to `proxy-ca002-san64.ahrefs.net` (Ahrefs).
- Subnet: Part of `54.39.136.0/24` (OVH network).
- Neighbors:
- Subnet abuse density: 0.5198 (moderate risk).
- 131 of 252 sibling IPs flagged as high-risk.
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**4. Geolocation & Plausibility**
- Geo-Validation:
- Inconsistent: RTT (26ms) contradicts distance to Canada (5629km).
- Potential misrouting or proxy/VPN usage.
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**5. Threat Context**
- No Malicious Activity: No abuse confidence, spam, or campaign ties.
- Subnet Risk: High-risk neighbors (131/252) suggest potential for lateral movement or compromised hosts.
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**6. Recommendations**
- Monitor Subnet: Track high-risk neighbors for anomalies.
- Verify DNS: Confirm Ahrefs' legitimate use of `proxy-ca002-san64.ahrefs.net`.
- Geolocation Discrepancy: Investigate potential proxy/VPN usage or routing issues.
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Conclusion: 54.39.136.64 is a legitimate cloud server under Ahrefs, but its subnet contains high-risk activity. No immediate action required, but continuous monitoring is advised.
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-san64.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca002-san64.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 | Tier 3 — Basic operator with some routing infrastructure |
🔌 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 | 36% | 2 | 4 |
| routing | 27% | 2 | 3 |
| services | 24% | 2 | 3 |
| ownership | 22% | 3 | 3 |
| reputation | 28% | 1 | 3 |
| geolocation | 34% | 2 | 3 |
| Overall | 29% | 12 | 19 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-16 21:01:18 UTC |
| Last Seen | 2026-06-28 04:06:32 UTC |
| Profile Built | 2026-06-29 04:12:22 UTC |
| Data Freshness | Live |
| Signal Types | 25 |
| Total Observations | 30 |
Full dossier details are available via our API.