18.212.20.153📋 Copy

# INTELLIGENCE BRIEFING: 18.212.20.153/32

Classification: Moderate Risk

Report Date: 2026-08-06

Analyst: IPDebrief Intelligence

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## EXECUTIVE SUMMARY

Target IP 18.212.20.153 is an Amazon Web Services EC2 instance located in Ashburn, Virginia (US). The IP carries a moderate risk score (50/100) with no active threat indicators in current profiles, though historical signals indicate presence in 9 threat pulse feeds. The infrastructure is firewalled with no open services detected.

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## INFRASTRUCTURE PROFILE

Ownership & Network:

• Organization: Amazon Technologies Inc. (AS14618)
• Network Block: AT-88-Z (18.32.0.0/11)
• RIR: ARIN
• Registration: Established AWS infrastructure

Geolocation:

• Location: Ashburn, Virginia, US
• Coordinates: 39.0481°N, -77.4728°W
• Timezone: America/New_York
• Accuracy Radius: 200km

Network Role:

• Infrastructure Type: Cloud Compute
• Classification: AWS EC2 Instance
• Service Status: Firewalled / No Services Detected
• Cloud Provider: Amazon Web Services

DNS Resolution:

• PTR Hostname: ec2-18-212-20-153.compute-1.amazonaws.com
• Forward Confirmation: Valid
• Domain: amazonaws.com

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## THREAT ASSESSMENT

Risk Score: 50/100 (Moderate Risk)

Current Threat Indicators:

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

Control Plane Anomalies:

• Route Stability: False
• Operator Score: 0.2609 (Basic)
• DNSBL Listings: 2 of 8 total lists
• IRR Consistency: Not evaluated

Abuse Density: 0.0 (No abuse observed in /24 neighborhood)

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## SIGNAL HISTORY (17 Observations)

Recent Activity (2026-08-06):

• BGP Origin: AS14618 (amazon.com inc.)
• BGP Prefix: 18.208.0.0/13
• Geolocation Signals: Multiple sources confirm Ashburn, VA placement
• Alienvault OTX Signal: 9 active threat pulses detected
• Ownership Stability: Stable (no recent transfers)

Temporal Analysis:

• Threat Persistence Days: 0
• Is Persistently Malicious: False
• Ownership Changes: 0

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## RELATIONSHIP GRAPH

Associated Entities:

• Network: AT-88-Z (Same Network)
• Hostname: ec2-18-212-20-153.compute-1.amazonaws.com (DNS Association)
• No cross-organizational or certificate relationships detected

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## NEIGHBORHOOD ANALYSIS

Subnet: 18.212.20.153/24

• Neighbor Count: 0
• Abuse Density: 0.0
• Classification: None
• Threat Siblings: 0
• Active Siblings: 0

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## RECOMMENDED ACTIONS

Risk-Based Mitigation:

• Recommended Action: Monitor or block based on organizational policy
• Risk Score: 50 (Moderate Risk)

Firewall Rules:

• iptables: `iptables -A INPUT -s 18.212.20.153 -j DROP`
• nftables: `nft add rule inet filter input ip saddr 18.212.20.153 drop`
• nginx: `deny 18.212.20.153;`
• pfSense: `18.212.20.153/32`
• Cloudflare WAF: Block rule recommended
• AWS WAF: IP block rule applicable

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## ANALYST NOTES

The IP represents standard AWS cloud infrastructure with no evidence of active malicious activity. The moderate risk score (50) appears conservative given:

• No open ports or services detected
• No current blacklist presence
• Stable AWS ownership
• Zero threat siblings in neighborhood

Recommendation: The primary concern stems from historical Alienvault OTX signals showing 9 threat pulses. Monitor for reclassification of this IP. No immediate threat action required unless organizational policy mandates blocking of all cloud infrastructure.

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END BRIEFING

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