54.39.136.137
IP Intelligence Briefing: 54.39.136.137
*Generated via IPDebrief tools: profile, history, relationships, and neighborhood analysis*
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**1. Risk Assessment**
- Overall Risk: Low Risk (25/100) | Provider Score: 0 | Authority Score: 0
- Threat Indicators: No malicious indicators, spam, or known attacker associations.
- Network Role: CloudCompute infrastructure (OVH-hosted).
- Geolocation:
- Country: Canada (QC, Beauharnois)
- Geo Plausibility: False (RTT discrepancy: 28ms vs. 5629km distance).
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**2. Ownership & Infrastructure**
- ASN: 16276 (OVH) | Organization: Dmytro, Ahrefs Pte Ltd
- Subnet: 54.39.136.0/24 | Abuse Density: 40.41% (mixed classification)
- Services: No open ports or TLS certificates detected.
- DNS:
- PTR hostname: `proxy-ca002-san137.ahrefs.net`
- Linked to Ahrefs.net (SEO tooling provider).
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**3. Observation History**
- Latest Activity: 2026-06-09 (Minimal risk signal).
- Key Signals:
- DNSSEC/CAA validation (valid).
- Subnet abuse density analysis (moderate risk).
- Geo validation flagged for RTT inconsistency.
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**4. Network Relationships**
- Connected Entities:
- Subnet: 54.39.136.0/24 (245 IPs, 80 active).
- DNS: Ahrefs.net (hosted domains: 0).
- Network: OVH-CUST-281059681 (cloud hosting).
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**5. Neighborhood Analysis**
- Subnet Risk: 40.41% abuse density (16 inherited risk points).
- Neighbor IPs:
- 62 medium-risk IPs (40–60 score), 38 low-risk IPs (0–25).
- Notable: 54.39.136.0 (25/100), 54.39.136.1 (40/100).
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**6. Recommendations**
- Monitor: Subnet abuse density and geo validation anomalies.
- Verify: Confirm Ahrefs.net’s legitimacy and ensure DNS records are authorized.
- Blocklist: Consider mitigating if RTT discrepancy indicates spoofing or misconfigured routing.
Note: No immediate threat detected, but the IP’s cloud infrastructure and moderate subnet risk warrant continued observation.
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*Generated by IPDebrief | © 2026 Jason Alberino*
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-san137.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Hosted Domain | ip137.ip-54-39-136.net |
| Forward Hostnames | proxy-ca002-san137.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 | |||
| 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 | 3 |
| routing | 13% | 1 | 1 |
| services | 8% | 1 | 1 |
| ownership | 15% | 2 | 2 |
| reputation | 28% | 1 | 3 |
| geolocation | 33% | 2 | 3 |
| Overall | 22% | 9 | 13 |
| Data Coherence | Mostly Consistent (80%) — 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-20 05:45:10 UTC |
| Last Seen | 2026-06-28 11:31:23 UTC |
| Profile Built | 2026-06-29 05:35:58 UTC |
| Data Freshness | Live |
| Signal Types | 20 |
| Total Observations | 24 |
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