47.128.121.7📋 Copy

## IP Intelligence Briefing: 47.128.121.7

Classification: MODERATE RISK — Cloud Infrastructure

Date: 2026-06-15

Analyst: IPDebrief Intelligence Team

---

Executive Summary

IP address 47.128.121.7 is a legitimate Amazon Web Services cloud compute instance located in Singapore (ap-southeast-1). Current risk assessment indicates moderate risk (score: 40/100) with no direct threat indicators. However, the IP resides within a /24 subnet exhibiting high abuse density (53.52%), suggesting potential collateral risk from neighboring addresses.

---

Technical Profile

DNS Resolution:

• PTR Record: ec2-47-128-121-7.ap-southeast-1.compute.amazonaws.com
• Forward Resolution: Confirmed (1 record)
• Email Auth: SPF and DMARC records present

Services: No open ports detected (firewalled/no services exposed)

---

Threat Assessment

Current Status: No active threat indicators identified.

• Known Attacker: No
• Tor Exit Node: No
• Spam Source: No
• CDN/Proxy/VPN: No
• Malware Campaigns: None detected

Observed Indicators:

• 26 historical observations collected
• Threat observation count: 1
• Not persistently malicious
• Route stability: Stable (no route changes in 30 days)

---

Neighborhood Analysis

Subnet: 47.128.121.0/24

• Total Siblings: 71 IPs
• Active Siblings: 43
• Threat Siblings: 38 (53.52% abuse density)
• Classification: High Abuse

Risk Distribution in Subnet:

• High Risk: 0
• Medium Risk: 72
• Low Risk: 6

Notable Neighboring IPs:

• 47.128.121.6 (Risk: 40, Authority: 60)
• 47.128.121.9 (Risk: 40, Authority: 60)
• 47.128.121.13 (Risk: 40, Authority: 60)
• 47.128.121.52 (Risk: 40, Authority: 60)
• 47.128.121.53 (Risk: 40, Authority: 60)

---

Relationship Graph

Primary associations identified:

• DNS Associations: Multiple entries to ec2-47-128-121-7.ap-southeast-1.compute.amazonaws.com
• Network Association: AMAZON-SIN (same network)
• Related Entities: 42 total relationship records

---

Historical Observation Timeline

Recent Activity (June 2026):

• 2026-06-15 04:48: Cloud infrastructure classification confirmed (AWS provider)
• 2026-06-15 02:37: Subnet abuse density recorded (0.5352, high_abuse classification)
• 2026-06-15 02:30: DNS blacklist listing detected (1 of 8 total lists, max severity: high)
• 2026-06-15 02:29: Operator score recorded (0.5217, Moderate)

Temporal Analysis: No ownership changes observed. Threat persistence days: 0.

---

Recommended Actions

Firewall Blocking Rules (Recommended):

```bash

# iptables

iptables -A INPUT -s 47.128.121.7 -j DROP

# nftables

nft add rule inet filter input ip saddr 47.128.121.7 drop

# nginx

deny 47.128.121.7;

# pfSense

47.128.121.7/32

# Cloudflare WAF

ip.src eq 47.128.121.7 → Block

# AWS WAF

Addresses: 47.128.121.7/32

```

Risk Mitigation Notes:

• Despite moderate risk score, the subnet's high abuse density warrants consideration for blocking
• This is a cloud infrastructure IP; false positives should be evaluated before blocking
• Monitor for any service activity if previously blocked
• Consider blocking the entire /24 subnet if threat correlates with neighbor IPs

---

Intelligence Confidence

Data Sufficiency: 17 dimensions covered across 7 total sources

Overall Confidence: Moderate (0.29 confidence score)

Geolocation Validation: Plausible (ICMP validation blocked)

---

End of Briefing

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