IP Intelligence Briefing: 47.128.121.153/32
*Generated via IPDebrief Analysis*
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**1. Risk Profile**
- Risk Score: 40 (Moderate Risk)
- Ownership: Amazon Data Services Singapore (ASN 16509)
- Geolocation: Singapore (1.35°N, 103.82°E)
- Network Role: AWS CloudCompute instance (Hosting, No Public Services)
- Threat Indicators: No direct malicious activity detected (no spam, phishing, or known attacker associations).
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**2. Observation History**
- Latest Activity: June 14, 2026 (abuse density 0.54, high_abuse classification).
- Subnet Trends:
- Threat Siblings: 38 IPs in the 47.128.121.0/24 subnet flagged for abuse.
- Abuse Density: 54.29% of neighbors show suspicious activity.
- Stability: Route stability inconsistent (BGP route changes detected).
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**3. Relationships & Dependencies**
- DNS: Resolves to `ec2-47-128-121-153.ap-southeast-1.compute.amazonaws.com` (AWS EC2 instance).
- Network: Linked to Amazonβs AS16509 network (AMAZON-SIN).
- Email Security: SPF and DMARC records detected, no email-based threats.
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**4. Neighborhood Analysis**
- Subnet: 47.128.121.0/24 (70 total IPs, 41 active).
- Risk Distribution:
- 71 IPs flagged as medium-risk (score 40β60).
- 5 IPs marked as low-risk.
- Notable Neighbors:
- 47.128.121.6, 47.128.121.7, 47.128.121.9, etc., with similar risk scores.
- Abuse Density: High (54.29% of subnet IPs flagged).
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**5. Security Recommendations**
- Monitor Subnet: The 47.128.121.0/24 subnet has a high abuse density; investigate neighboring IPs for lateral movement or shared infrastructure risks.
- Cloud Security: Verify AWS EC2 instance compliance with security best practices (e.g., IAM roles, network ACLs).
- Network Segmentation: Consider isolating high-risk subnets to limit potential impact.
- Threat Intelligence: Subscribe to feeds like AlienVault OTX for real-time updates on associated threats.
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Conclusion: This IP is associated with a legitimate AWS CloudCompute instance but resides in a subnet with elevated abuse activity. While no direct threats are detected, the surrounding network warrants closer scrutiny. SOC teams should prioritize monitoring AWS infrastructure and subnet-level anomalies.
This summary was generated by AI and may contain inaccuracies. Verify critical details independently.
π’ Ownership & Registration
| Organization | Amazon Data Services Singapore |
| ASN | AS16509 |
| Network Name | β |
| CIDR Block | β |
| RIR | ARIN |
| Country | β |
| Abuse Contact | Available via RDAP |
π DNS Intelligence
| PTR | ec2-47-128-121-153.ap-southeast-1.compute.amazonaws.com |
| Forward Confirmed | Yes β FCrDNS verified |
| Forward Hostnames | ec2-47-128-121-153.ap-southeast-1.compute.amazonaws.com |
π DNS Hygiene
| Hygiene Score | 80% (Excellent) |
| SPF | Present |
| DMARC | Present |
| FCrDNS | Verified |
| DNSSEC | Valid |
| CAA | Not configured |
βοΈ Network Classification
| Infrastructure | Infrastructure / Datacenter |
| Service Purpose | Firewalled / No Services |
| Network Tier | Hosting β Infrastructure provider without advanced routing |
π 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 | β |
| HTTP Title | β |
π TLS Certificate
| SANs | None |
| Valid From | β |
| Valid Until | β |
π― Confidence Breakdown
Per-dimension confidence scores based on source diversity and data freshness
| Dimension | Score | Sources | Observations |
|---|---|---|---|
| threat | 33% | 2 | 4 |
| routing | 8% | 1 | 1 |
| services | 15% | 2 | 2 |
| ownership | 24% | 2 | 3 |
| reputation | 31% | 1 | 3 |
| geolocation | 30% | 2 | 3 |
| Overall | 23% | 10 | 16 |
| Data Coherence | Consistent (100%) |
| Attribution | Moderate (70%) |
| OwnershipFCrDNSGeo ConsensusGeo PlausibleIRR MatchRPKI Valid |
π Observation Timeline π Live
| First Seen | 2026-05-07 23:04:23 UTC |
| Last Seen | 2026-06-27 05:50:13 UTC |
| Profile Built | 2026-06-28 05:57:13 UTC |
| Data Freshness | Live |
| Signal Types | 23 |
| Total Observations | 29 |
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