18.219.171.20📋 Copy

# Intelligence Briefing: 18.219.171.20

## Executive Summary

IP 18.219.171.20 is a low-risk infrastructure address belonging to Amazon Web Services. The IP resolves to a legitimate EC2 instance in the us-east-2 (Ohio) region. While the threat profile is benign, the open RDP port (3389/tcp) warrants monitoring as a potential lateral movement vector if this instance is compromised or misconfigured.

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## Profile Analysis

Ownership & Registration:

• Organization: Amazon Technologies Inc.
• CIDR Block: 18.32.0.0/11
• RIR: ARIN
• Registration Status: Active cloud infrastructure

DNS Resolution:

• PTR Hostname: ec2-18-219-171-20.us-east-2.compute.amazonaws.com
• Forward Resolution: Confirmed
• Domain: amazonaws.com
• Email Authentication: SPF and DMARC records present

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## Threat Indicators

Current Status: Clean

• Known Attackers: No
• Spam Source: No
• Tor Exit Node: No
• Blacklist Count: 0
• Pulsedive Risk: None detected
• Known Campaigns: None associated

Control Plane:

• DNSBL Listed: 1/8 total lists
• Route Stability: Unstable (route changes detected in 30-day window)
• RPKI State: Not evaluated

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## Network Exposure

Open Services:

• Port 3389/tcp (RDP) - Remote Desktop Protocol

Security Note: RDP exposure on cloud infrastructure requires verification of proper access controls and authentication mechanisms.

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## Neighborhood Assessment

Subnet: 18.219.171.0/24

• Abuse Density: 0 (Clean)
• Total Siblings: 1
• Active Siblings: 1
• Threat Siblings: 0
• Classification: Clean

No neighboring IPs in the /24 subnet exhibit malicious activity.

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## Relationship Graph

Associated Entities:

• DNS Associations: ec2-18-219-171-20.us-east-2.compute.amazonaws.com (repeated)
• Network: AT-88-Z (AWS network)

No external malicious relationships or campaign correlations detected.

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## Historical Analysis

Observation Period: 20 recent signals tracked

• Ownership Changes: 0
• Threat Persistence Days: 0
• Persistent Malicious Activity: No
• Recent Signals: Consistent low-risk classification across all observation periods

The IP has maintained a stable, benign profile with no degradation in reputation over the observation window.

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## Recommended Actions

Risk-Based Recommendations:

• Monitor: Track RDP (3389) port for unauthorized access attempts
• Baseline: Establish normal traffic patterns for this AWS instance
• No Block Required: Low risk profile does not warrant blocking at this time
• Verification: Confirm legitimate business use and access controls for RDP exposure

Firewall Rules: No specific rules generated due to low threat profile.

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## Conclusion

IP 18.219.171.20 represents legitimate AWS cloud infrastructure with a low-risk threat profile. The open RDP service is the primary concern and should be validated against organizational security policies. No immediate defensive action required beyond standard monitoring practices.

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