47.128.112.221📋 Copy

# THREAT INTELLIGENCE BRIEFING

Target: 47.128.112.221/32

Classification: AWS EC2 Instance - Singapore

Date: 2026-06-14

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## EXECUTIVE SUMMARY

IP address 47.128.112.221 is a cloud infrastructure endpoint belonging to Amazon Web Services (AWS) Singapore region (ap-southeast-1). Current risk assessment indicates MODERATE RISK (Score: 40) with no active threat indicators. The IP represents a standard AWS EC2 compute instance with no open services or malicious activity detected.

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## NETWORK PROFILE

Ownership & Infrastructure:

• ASN: 16509 (Amazon Data Services Singapore)
• Provider: Amazon Web Services
• Infrastructure Type: CloudCompute
• Network Role: Firewalled / No Services
• Service Status: No open ports detected

Geolocation:

• Country: Singapore (SG)
• Region: SG
• Coordinates: 1.35°N, 103.82°E
• Timezone: Asia/Singapore
• Resolution Confidence: 0.56 (multi-signal inference)

DNS Resolution:

• PTR Hostname: ec2-47-128-112-221.ap-southeast-1.compute.amazonaws.com
• Forward Resolution: Confirmed
• Email Auth: SPF and DMARC records present
• DNSBL Status: Listed on 1 of 8 monitored lists

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## THREAT ASSESSMENT

Current Risk Score: 40/100 (Moderate)

Threat Indicators:

• Tor Exit Node: No
• Known Attacker: No
• Spam Source: No
• Blacklist Count: 0
• Known Campaigns: None

Control Plane Data:

• BGP Prefix: 47.128.0.0/14
• Route Stability: Unstable (non-routable)
• RPKI State: Not verified
• DNSSEC: Valid

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## NEIGHBORHOOD ANALYSIS (47.128.112.0/24)

Subnet Classification: High Abuse Density

Abuse Metrics:

• Abuse Density: 0.6122 (High)
• Total Siblings: 98
• Active Siblings: 53
• Threat Siblings: 60
• Inherited Risk Score: 24

Risk Distribution:

• High Risk: 0
• Medium Risk: 97
• Low Risk: 2

Assessment: The /24 subnet exhibits elevated abuse activity with 60+ threat siblings. While this specific IP shows no direct malicious indicators, the neighborhood context suggests this is a high-density cloud environment where abuse may occur across multiple endpoints.

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## OBSERVATION HISTORY

Total Observations: 19 signals tracked

Recent Activity (2026-06-14):

• 16:28:03 - Geolocation signal (Singapore, confidence 0.56)
• 16:26:49 - Cloud infrastructure classification (AWS, confidence 0.90)
• 16:25:50 - Operator score assessment (Basic label, score 0.2609)

Historical Signals:

• 2026-06-05 - Subnet abuse classification recorded (high_abuse, 0.6122 density)

Persistence Analysis:

• Threat Persistence Days: 0
• Ownership Changes: 0
• Persistently Malicious: No

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## RELATIONSHIP GRAPH

Identified Connections (36 relationships):

• DNS Associations: ec2-47-128-112-221.ap-southeast-1.compute.amazonaws.com
• Network Affiliations: AMAZON-SIN (multiple entries)
• Certificate Matches: None detected

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## RECOMMENDED ACTIONS

Security Operations:

1. Monitoring Priority: LOW-MEDIUM

- No active threat indicators requiring immediate action

- Monitor for service activation or port opening

2. Firewall Rules: No restrictive rules required

- AWS-managed infrastructure with no exposed services

- Standard egress filtering applies

3. Blocklist Assessment:

- Not recommended for blocklist inclusion

- Clean threat profile with 0 blacklist hits

4. Contextual Warning:

- Subnet (47.128.112.0/24) shows high abuse density

- Maintain awareness of neighborhood activity for lateral threat correlation

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## ANALYST NOTES

This IP represents legitimate AWS cloud infrastructure with no evidence of compromise or malicious use. The moderate risk score is primarily driven by the high-abuse density of its /24 subnet rather than individual IP malicious activity. Standard monitoring procedures apply; no immediate defensive action required.

Confidence Level: HIGH (based on 19 observations, 36 relationship mappings)

This summary was generated by AI and may contain inaccuracies. Verify critical details independently.