# IP INTELLIGENCE BRIEFING
Target: 54.39.136.90/32
Date: 2026-06-28
Classification: Moderate Risk / Cloud Infrastructure
---
## EXECUTIVE SUMMARY
The target IP 54.39.136.90 is identified as OVH cloud hosting infrastructure associated with Ahrefs Pte Ltd. Risk scoring indicates moderate risk (40/100) with geolocation inconsistencies and elevated neighborhood abuse density. No active malicious indicators currently detected, but subnet-level threat context warrants monitoring.
---
## INFRASTRUCTURE PROFILE
| Attribute | Value |
|---|---|
| **Organization** | Ahrefs Pte Ltd |
| **Network** | OVH-CUST-281059681 |
| **ASN** | 16276 (OVH) |
| **Location** | Beauharnois, QC, Canada |
| **Infrastructure Type** | Cloud Compute (OVH) |
| **Risk Score** | 40/100 (Moderate) |
---
## TECHNICAL OBSERVATIONS
- DNS Resolution: proxy-ca002-san90.ahrefs.net (ahrefs.net domain)
- Service Status: Firewalled / No Services Open
- Cloud Provider: OVH (confirmed hosting infrastructure)
- SSL/TLS: No certificates detected
- Anycast: Not detected
---
## GEOLOCATION ANALYSIS
Critical Finding: Geolocation validation failures detected.
- Claimed location: Beauharnois, QC, Canada
- Distance from probe: 5,628.6 km
- RTT violation: 26-28ms observed vs. minimum possible 112.6ms
- Multiple geo sources show inconsistent location data
- Accuracy radius: 3,000 km (low confidence)
*Recommendation: Treat reported geolocation as unreliable.*
---
## THREAT INDICATORS
Current Status: No active malicious indicators
- Blacklist count: 1/8 DNSBL lists
- Is Tor exit: No
- Known attacker: No
- Spam source: No
- Abuse confidence: Not scored
- Known campaigns: None
---
## NEIGHBORHOOD RISK CONTEXT
Subnet: 54.39.136.0/24
| Metric | Value |
|---|---|
| Abuse Density | 0.6953 (High) |
| Threat Siblings | 178/256 IPs |
| Active Siblings | 184 |
| Inherited Risk | 27/100 |
| Classification | HIGH_ABUSE |
*Elevated neighborhood abuse density suggests compromised peers may exist within the same /24 block.*
---
## OBSERVATION HISTORY (18 Signals)
Recent activity indicates:
- Consistent OVH hosting classification
- Persistent ahrefs.net DNS resolution
- Ongoing geolocation RTT violations
- No significant threat signal changes over observation period
---
## SOC ACTIONS & RECOMMENDATIONS
1. BLOCKING: No immediate blocking recommended. Risk score (40) is moderate with no active threat indicators.
2. MONITORING: Add to watchlist due to high-abuse subnet context. Monitor for peer IP activity.
3. FIREWALL: No specific rules generated; IP shows no open services.
4. CONTEXT: Legitimate Ahrefs infrastructure, but geolocation inconsistencies and neighborhood abuse warrant awareness.
---
## RISK ASSESSMENT
Current Threat Level: LOW-MODERATE
Justification: Legitimate cloud provider infrastructure with no active malicious indicators. Elevated neighborhood abuse density requires contextual awareness but does not justify immediate action.
---
*Intelligence generated by IPDebrief. Data sourced from real-time network scanning and reputation aggregation.*
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
๐ข 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 | โ |
๐ DNS Intelligence
| PTR | proxy-ca002-san90.ahrefs.net |
| Forward Confirmed | No โ PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca002-san90.ahrefs.net |
๐ DNS Hygiene
| Hygiene Score | 40% (Fair) |
| SPF | Not configured |
| DMARC | Not configured |
| FCrDNS | Not verified |
| DNSSEC | Valid |
| CAA | Present |
โ๏ธ Network Classification
| Infrastructure | Infrastructure / Datacenter |
| Service Purpose | Firewalled / No Services |
| Network Tier | Hosting โ Infrastructure provider without advanced routing |
๐ Services & Open Ports
| Port | Service | Protocol | Banner |
|---|---|---|---|
| No open ports detected | |||
| Server | โ |
| HTTP Title | โ |
๐ TLS Certificate
| SANs | None |
| Valid From | โ |
| Valid Until | โ |
๐ฏ Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 31% | 2 | 2 |
| routing | 13% | 1 | 1 |
| services | 8% | 1 | 1 |
| ownership | 15% | 2 | 2 |
| reputation | 22% | 1 | 2 |
| geolocation | 35% | 2 | 3 |
| Overall | 21% | 9 | 11 |
| Data Coherence | Mostly Consistent (80%) โ 1 contradiction(s) |
| Attribution | Low (35%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
๐ Observation Timeline ๐ Live
| First Seen | 2026-05-20 22:13:41 UTC |
| Last Seen | 2026-06-28 12:49:58 UTC |
| Profile Built | 2026-06-29 06:54:10 UTC |
| Data Freshness | Live |
| Signal Types | 17 |
| Total Observations | 22 |
Full dossier details are available via our API.