54.39.136.116
IP Intelligence Briefing: 54.39.136.116
Date: 2026-06-14
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**1. Risk Profile**
- Risk Score: 40 (Moderate Risk)
- Provider: OVH (AS16276)
- Organization: Dmytro, Ahrefs Pte Ltd (OVH-CUST-281059681)
- Geolocation:
- Reported Location: Quebec, Canada (Beauharnois)
- Validation: Plausibility Flagged (RTT of 26ms inconsistent with 5,629km distance; potential spoofing).
- Network Role: Cloud compute infrastructure (OVH Hosting).
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**2. Threat Indicators**
- No Malicious Activity Detected:
- No indicators in threat feeds, blacklists, or campaigns.
- DNS: Resolves to `proxy-ca002-san116.ahrefs.net` (legitimate domain).
- Services: No open ports or TLS certificates detected.
- Abuse Context:
- Subnet 54.39.136.0/24 has high abuse density (0.549), with 140/255 IPs flagged as threats.
- Neighbor Risk: 98% of subnet IPs score "medium" or "high" risk (avg. 40).
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**3. Historical Observations**
- Recent Activity (30d):
- Consistent cloud infrastructure role (OVH Hosting).
- Geolocation data shows no significant changes.
- RTT Anomalies: Persistent low RTT (26ms) vs. geographic distance, suggesting potential spoofing or proxy use.
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**4. Relationships & Network Context**
- Network Affiliation:
- Part of OVH-CUST-281059681 (ASN16276).
- Subnet 54.39.136.0/24 has 140 malicious siblings (high abuse density).
- DNS:
- Linked to ahrefs.net (no email auth records, no SPF/DKIM).
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**5. Recommendations**
- Monitor Subnet: High abuse density in 54.39.136.0/24 warrants closer scrutiny.
- Verify Geolocation: Investigate RTT anomalies; potential spoofing or proxy use.
- Baseline Behavior: No active threats detected, but subnet risk profile suggests elevated vigilance.
- Firewall Rules: Consider blocking high-risk subnet siblings if access is not required.
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Note: This IP is associated with a legitimate cloud provider but resides in a subnet with significant abuse activity. Prioritize subnet-level analysis over individual IP isolation.
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-san116.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca002-san116.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 | 26% | 2 | 4 |
| routing | 13% | 1 | 1 |
| services | 12% | 2 | 2 |
| ownership | 19% | 2 | 2 |
| reputation | 31% | 1 | 3 |
| geolocation | 32% | 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 | 2026-05-07 23:04:28 UTC |
| Last Seen | 2026-06-27 08:07:14 UTC |
| Profile Built | 2026-06-28 02:13:29 UTC |
| Data Freshness | Live |
| Signal Types | 22 |
| Total Observations | 28 |
Full dossier details are available via our API.