54.39.136.236
IP INTELLIGENCE BRIEFING: 54.39.136.236
Classification: Moderate Risk / Infrastructure Node
Executive Summary:
IP 54.39.136.236 is an OVH-hosted infrastructure IP located in Beauharnois, Quebec, Canada, associated with ahrefs.net. The IP shows moderate risk scoring (40/100) with no direct threat indicators, but operates within a high-abuse density subnet (0.5433). The address resolves to proxy-ca002-san236.ahrefs.net with no open services detected.
Ownership & Infrastructure:
- ASN: 16276 (OVH)
- Organization: Dmytro, Ahrefs Pte Ltd
- Network: OVH-CUST-281059681 / 54.39.136.0/24
- Geolocation: Canada, Quebec, Beauharnois (±3000km accuracy)
- Classification: Hosting infrastructure, not cloud/CDN/proxy
Threat Assessment:
- Risk Score: 40 (Moderate)
- Abuse Confidence: No indicators
- Known Attacker: No
- Tor Exit: No
- Spam Source: No
- Blacklist Status: Not on major lists (0 counts)
- DNSBL: Listed on 1 of 8 threat feeds
Service Analysis:
- Open Ports: None detected
- DNS: proxy-ca002-san236.ahrefs.net (forward resolution incomplete)
- TLS/HTTP: No services exposed
- Status: Firewalled / No services running
Subnet Context (54.39.136.0/24):
- Abuse Density: 0.5433 (High)
- Total Siblings: 254
- Active Siblings: 139
- Threat Siblings: 138
- Risk Distribution: 100 medium-risk IPs observed in neighborhood analysis
Control Plane:
- BGP Prefix: 54.39.0.0/16
- Route Stability: Minimal changes (30-day)
- DNSSEC: Valid
- Origin ASN: 16276
Observation History:
- Most recent observation: 2026-06-20 (geolocation signal)
- Multiple operator assessments recorded from 2026-06-09 to 2026-06-20
- No persistent malicious activity detected
- Threat observation count: 1
Relationships:
- 41 relationships identified, primarily same-network associations with OVH-CUST-281059681
Recommended Actions:
No specific firewall rules recommended. Monitor for changes in service exposure or DNS resolution patterns. The subnet's high abuse density suggests maintaining baseline monitoring for this /24 block.
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-san236.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca002-san236.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 | 29% | 2 | 4 |
| routing | 13% | 1 | 1 |
| services | 15% | 2 | 2 |
| ownership | 15% | 2 | 2 |
| reputation | 28% | 1 | 3 |
| geolocation | 33% | 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 | 2026-05-22 03:10:30 UTC |
| Last Seen | 2026-06-28 17:59:31 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.