3.75.86.33
IP Intelligence Briefing: 3.75.86.33
Date: 2026-06-13
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**1. Core Profile**
- Risk Assessment:
- Reputation: Low Risk (Risk Score: 25)
- Provider Score: 0 (No malicious provider associations)
- Ownership: Registered to A100 ROW GmbH (ASN 16509, Amazon Web Services).
- Geolocation: Frankfurt, Germany (HE region), latitude 50.11, longitude 8.68.
- Network Role: Amazon AWS infrastructure (no open services, no CDN/VPN/Proxy identifiers).
- Threat Indicators:
- No malicious activity detected (no indicators, blacklists, or campaigns).
- DNS: Resolves to `ec2-3-75-86-33.eu-central-1.compute.amazonaws.com` with SPF/DMArC records.
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**2. Observation History (30-Day Trend)**
- Geolocation: Consistent Frankfurt, Germany (accuracy ±150km, confidence 56%).
- Network Stability: Subnet `3.75.86.33/24` shows clean classification (abuse density: 0).
- Operator Risk: Operator score 0.26 (Basic risk label), no route instability.
- DNSBL: Listed in 1 of 8 DNSBLs (low-severity risk, likely false positive).
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**3. Relationships & Context**
- Network Associations:
- Linked to AMAZON-FRA (AS16509) via BGP prefix `3.64.0.0/12`.
- DNS records tie to Amazon EC2 instances.
- Subnet: No active neighbors in `3.75.86.33/24` (0 siblings).
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**4. Actionable Insights**
- No Immediate Threat: Low-risk profile with no malicious indicators.
- Monitor AWS Infrastructure: Track changes to Amazon-hosted resources (e.g., EC2 instances).
- Verify DNSBL Listing: Investigate the 1 DNSBL listing to confirm relevance.
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Conclusion:
This IP is part of Amazon’s cloud infrastructure in Frankfurt, Germany. No signs of malicious activity or network compromise. Continue monitoring for unexpected changes in DNS or routing behavior. No immediate defensive action required.
Recommended Tools:
- Use AWS security tools to validate EC2 instance health.
- Cross-reference DNSBL listing with threat intelligence feeds for context.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
🏢 Ownership & Registration
| Organization | A100 ROW GmbH |
| ASN | AS16509 |
| Network Name | AMAZON-FRA |
| CIDR Block | 3.64.0.0/12 |
| RIR | ARIN |
| Country | Germany |
| Abuse Contact | Available via RDAP |
🌐 DNS Intelligence
| PTR | ec2-3-75-86-33.eu-central-1.compute.amazonaws.com |
| Forward Confirmed | Yes — FCrDNS verified |
| Forward Hostnames | ec2-3-75-86-33.eu-central-1.compute.amazonaws.com |
🔐 DNS Hygiene
| Hygiene Score | 80% (Excellent) |
| SPF | Present |
| DMARC | Present |
| FCrDNS | Verified |
| DNSSEC | Valid |
| CAA | Not configured |
☁️ Network Classification
| Infrastructure | Unknown |
| Service Purpose | Firewalled / No Services |
| Network Tier | Tier 3 — Basic operator with some routing infrastructure |
🔌 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 | 35% | 2 | 3 |
| routing | 13% | 1 | 1 |
| services | 21% | 2 | 2 |
| ownership | 27% | 2 | 3 |
| reputation | 15% | 1 | 2 |
| geolocation | 19% | 2 | 2 |
| Overall | 22% | 10 | 13 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (70%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
📅 Observation Timeline 🔄 Live
| First Seen | 2026-06-04 06:35:59 UTC |
| Last Seen | 2026-06-21 11:16:24 UTC |
| Profile Built | 2026-06-21 11:29:32 UTC |
| Data Freshness | Live |
| Signal Types | 22 |
| Total Observations | 30 |
Full dossier details are available via our API.