66.132.172.135📋 Copy

# INTELLIGENCE BRIEFING: IP 66.132.172.135/32

Classification: LOW RISK | Threat Level: MINIMAL | Date: 2026-06-23

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## EXECUTIVE SUMMARY

IP 66.132.172.135 is an infrastructure address belonging to Censys, Inc. (AS398324), a legitimate network scanning and intelligence platform. The IP demonstrates low risk characteristics with no active threat indicators, though the broader /24 subnet exhibits mixed abuse density. This asset is part of Censys's scanning infrastructure operating from Miami, FL.

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## PROFILE ANALYSIS

Ownership & Network Classification

• ASN: 398324 (Censys, Inc.)
• Organization: Censys, Inc.
• Location: Miami, FL, US (ARIN registry)
• Network Role: Firewalled / No Services
• DNS: Forward-resolved to 135.172.132.66.censys-scanner.com

Risk Assessment

• Overall Risk Score: 25 (Low Risk)
• Abuse Confidence Score: Not applicable (no active abuse signals)
• Known Attacker: FALSE
• Spam Source: FALSE
• Tor Exit Node: FALSE

Control Plane Indicators

• BGP Prefix: 66.172.132.0/24
• Route Stability: UNSTABLE
• DNSSEC Valid: TRUE
• DNSBL Listed: 1 of 8 total lists
• Operator Score: 0.2609 (Basic classification)

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## NEIGHBORHOOD ANALYSIS (/24 SUBNET)

• Subnet: 66.132.172.0/24
• Abuse Density: 0.4271 (MEDIUM)
• Total Siblings: 96
• Active Siblings: 26
• Threat Siblings: 41
• Inherited Risk: 17

Risk Distribution in Subnet

• High Risk: 0 IPs
• Medium Risk: 65 IPs
• Low Risk: 30 IPs

The subnet shows elevated medium-risk activity, but the target IP itself maintains low-risk classification with no direct threat indicators.

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## RELATIONSHIP MAPPING

• Primary DNS Hostname: 135.172.132.66.censys-scanner.com
• Network Association: CENSY (Censys infrastructure)
• Certificate Associations: None detected
• Campaign Correlations: 0

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## OBSERVATION HISTORY

Total Observations: 21 signals

Recent Activity (June 2026)

• 2026-06-23: Multiple blacklist listings detected (8 total lists, 2 active, max severity: HIGH)
• 2026-06-18: Subnet analysis confirmed mixed classification with 0.4271 abuse density

Temporal Analysis

• Ownership Changes: 0 (stable)
• Threat Persistence Days: 0
• Persistently Malicious: FALSE

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## TECHNICAL SERVICES

• Open Ports: None detected (Firewalled)
• TLS Certificate: None
• HTTP Title: None
• Banner Grabs: None

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## THREAT INDICATORS

• Active Threat Indicators: NONE
• Known Campaigns: NONE
• Threat Feeds: NONE
• Blacklist Count: 0 (control plane shows 1 DNSBL listing)

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## RECOMMENDED ACTIONS

Security Posture Assessment

• Block/Allow: ALLOW (legitimate infrastructure)
• Traffic Monitoring: STANDARD logging recommended
• Firewall Rules: No specific blocking required

SOC Analyst Guidance

1. No immediate blocking action required - IP is associated with Censys, Inc. infrastructure

2. Monitor outbound connections - May be part of scanning operations

3. Contextualize alerts - Treat differently from malicious scanning IPs

4. Subnet awareness - Monitor other /24 addresses for elevated activity (41 threat siblings identified)

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## GEOLOCATION VALIDATION WARNING

STATUS: GEOLOCATION PLAUSIBILITY VIOLATION

• Reported location: Miami, FL
• Distance anomaly: 7,625.7 km (significant discrepancy)
• RTT violation: 35.0ms vs. minimum possible 152.5ms for stated distance
• Assessment: Geolocation data may be inaccurate; rely on ASN/ownership data instead

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PREPARED BY: IPDebrief Intelligence Platform

DATA SOURCES: Censys Infrastructure Analysis

CONFIDENCE: HIGH (multiple verification sources)

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*This briefing is based on IPDebrief intelligence platform data. Correlate with additional threat feeds and context before taking security actions.*

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