13.57.128.140📋 Copy

# IPDebrief Intelligence Briefing

Target: 13.57.128.140/32 | Classification: Moderate Risk | Date: 2026-08-13

## Executive Summary

IP 13.57.128.140 is a cloud infrastructure endpoint operated by Amazon Web Services (AWS) in the US West Region (us-west-1). The IP exhibits moderate risk (50/100) with no active threat indicators. Infrastructure is classified as firewalled with no detectable open services.

## Technical Profile

## Network Classification

• Cloud Infrastructure: Yes (AWS)
• Provider: Amazon Web Services
• Services: Firewalled / No Services Detected
• TLS/HTTP: No active services
• Tor/Proxy: Not detected

## Threat Assessment

• Known Attacker: No
• Spam Source: No
• Tor Exit Node: No
• Blacklist Count: 0
• DNSBL Listed: 2 of 8 total lists
• Known Campaigns: None associated
• Threat Feeds: No matches

## Historical Observations

Analysis of 13 signal observations indicates stable infrastructure characteristics:

• Consistent ownership attribution to Amazon Technologies Inc.
• RIR registration: ARIN
• Abuse contact: trustandsafety@support.aws.com
• No ownership changes detected
• Risk profile remains stable with no escalation patterns

## Relationship Analysis

DNS associations confirmed to:

• ec2-13-57-128-140.us-west-1.compute.amazonaws.com

No additional hostnames, organizations, or certificates associated.

## Neighborhood Analysis

• Subnet: 13.57.128.140/24
• Abuse Density: 0%
• Threat Siblings: 0
• Active Siblings: 0
• Total Neighbors: 0

The /24 subnet shows no malicious activity correlation.

## Recommended Actions

Due to moderate risk classification and AWS infrastructure context, the following controls are recommended:

Firewall Rules:

• iptables: `iptables -A INPUT -s 13.57.128.140 -j DROP`
• nftables: `nft add rule inet filter input ip saddr 13.57.128.140 drop`
• nginx: `deny 13.57.128.140;`
• pfSense: `13.57.128.140/32`
• Cloudflare WAF: Block expression `ip.src eq 13.57.128.140`
• AWS WAF: Add `13.57.128.140/32` to IP Set

## Analyst Notes

This IP represents standard AWS cloud infrastructure. The moderate risk score stems from the DNSBL listings (2 of 8) which may indicate historical reputation concerns common with cloud IPs. No active attack patterns or malicious indicators were detected. If this IP is generating unsolicited traffic or has been observed in threat feeds, the recommended firewall rules should be implemented. Otherwise, standard AWS egress/ingress policies may be sufficient.

Confidence Level: High (multiple data sources confirm AWS infrastructure)

Action Priority: Medium (implement if traffic observed, otherwise monitor)

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