47.128.121.80📋 Copy

# IP Intelligence Briefing: 47.128.121.80/32

## Executive Summary

IP address 47.128.121.80 is a cloud-hosted Amazon Web Services EC2 instance located in Singapore (ap-southeast-1). The IP carries a moderate risk score of 40 and is associated with an abuse-dense subnet (47.128.121.0/24) showing 56.98% abuse density and 49 threat-identified siblings. No active services were detected, and the instance is firewalled with no open ports.

## Profile Details

## Threat Indicators

• Blacklist Status: Listed on 8 DNS blacklist entries with high severity
• Threat Feeds: No indicators from known threat feeds
• Tor Exit/Proxy: Not identified as Tor exit node or proxy
• Open Ports: None detected
• TLS Certificates: None observed
• Campaign Correlation: No known campaign matches

## Neighborhood Analysis

The /24 subnet (47.128.121.0/24) exhibits elevated abuse characteristics:

• Total Siblings: 86
• Active Siblings: 64
• Threat Siblings: 49
• Risk Distribution: 0 high, 79 medium, 9 low risk
• Inherited Risk: 22

Multiple neighboring IPs show risk scores of 40, suggesting concentrated risk patterns within the subnet.

## Historical Observations

23 signal observations recorded with the following key findings:

• Most Recent: 2026-06-25
• Signal Types: TLS checks, blacklist listings, subnet analysis, geolocation validation, ASN data
• Blacklist Activity: Listed on 8 DNS blacklist entries with high severity classification
• Network Classification: High abuse designation maintained across observations

## Relationship Graph

47 relationships identified, including:

• Multiple same-network associations (AMAZON-SIN)
• DNS associations to Amazon EC2 hostname
• Provider infrastructure links

## Recommended Actions

Based on the IP's risk profile and blacklist associations, the following mitigations are recommended:

Firewall Rules:

• iptables: `iptables -A INPUT -s 47.128.121.80 -j DROP`
• nftables: `nft add rule inet filter input ip saddr 47.128.121.80 drop`
• nginx: `deny 47.128.121.80;`
• pfSense: `47.128.121.80/32`
• Cloudflare WAF: Block with expression `ip.src eq 47.128.121.80`
• AWS WAF: `Addresses: ["47.128.121.80/32"]`

## Intelligence Assessment

This AWS EC2 instance presents moderate risk due to its subnet's high abuse density and blacklist presence. While no active exploitation services were detected, the IP's association with 8 high-severity blacklist listings warrants monitoring. The subnet's 49 threat siblings suggest coordinated or shared infrastructure abuse patterns. SOC teams should consider blocking at the perimeter while monitoring for any service activation or behavioral changes.

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