54.39.136.156
IP Intelligence Briefing: 54.39.136.156
*Generated via IPDebrief Analysis*
1. Core Profile
- Risk Rating: Moderate Risk (40/100)
- Ownership: Owned by OVH (ASN 16276) under "Dmytro, Ahrefs Pte Ltd" (netname: OVH-CUST-281059681).
- Geolocation: Canada (QC), Beauharnois; geolocation data has 3000km accuracy radius.
- Network Role: CloudCompute infrastructure (OVH-hosted, no public services detected).
- Threat Indicators: No malware, spam, or known attacker associations.
2. Historical Observations
- Recent Activity: 18 observations since June 9, 2026.
- Key Trends:
- Minimal risk score (0.2174) with DNSSEC and CAA validation.
- High subnet abuse density (0.54) in 54.39.136.0/24.
- No persistent malicious behavior or threat campaigns.
3. Network Relationships
- Connected Entities:
- Same network: 35+ IPs under OVH-CUST-281059681.
- DNS: PTR hostname `proxy-ca002-san156.ahrefs.net` (linked to Ahrefs).
- No direct ties to known malicious organizations or domains.
4. Subnet Analysis
- Neighborhood Risk:
- 100+ IPs in 54.39.136.0/24; 89% low risk, 11% medium risk.
- 138 of 254 siblings flagged as high-risk, suggesting potential subnet-wide compromise.
- Abuse Density: 54.33% of subnet IPs show abuse indicators.
5. Recommendations
- Monitoring: Track subnet activity due to high abuse density.
- Firewall: Consider blocking the IP if it starts showing open ports or DNS anomalies.
- Context: Likely a cloud server for Ahrefs, but subnet risks warrant closer scrutiny.
Conclusion: This IP is part of a high-risk subnet but shows no direct malicious activity. SOC teams should prioritize monitoring the 54.39.136.0/24 subnet for lateral movement or new threats.
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-san156.ahrefs.net |
| Forward Confirmed | No — PTR hostname does not resolve back to this IP (weak signal) |
| Forward Hostnames | proxy-ca002-san156.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 | 35% | 2 | 3 |
| routing | 13% | 1 | 1 |
| services | 8% | 1 | 1 |
| ownership | 15% | 2 | 2 |
| reputation | 28% | 1 | 3 |
| geolocation | 25% | 2 | 2 |
| Overall | 21% | 9 | 12 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (50%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-05-22 09:13:40 UTC |
| Last Seen | 2026-06-28 19:06:28 UTC |
| Profile Built | 2026-06-29 07:11:16 UTC |
| Data Freshness | Live |
| Signal Types | 18 |
| Total Observations | 20 |
Full dossier details are available via our API.