171.232.87.181📋 Copy

# INTELLIGENCE BRIEFING: IP 171.232.87.181/32

Classification: Low Risk / Clean

Report Date: Current

Analysis Level: Operational Threat Intelligence

## EXECUTIVE SUMMARY

IP address 171.232.87.181 is classified as Low Risk with zero risk score across all measured dimensions. The address shows no active threat indicators, no malicious campaign associations, and no blacklist listings. Network classification indicates a firewalled endpoint with no open services.

## TECHNICAL PROFILE

Control Plane:

• Origin ASN: 7552 (VIETTEL-AS-AP)
• BGP Prefix: 171.232.80.0/21
• Route Stability: Unstable (route changes detected)
• RPKI State: Not validated
• Transit Networks: Comcast, NTT

Ownership & Attribution:

• Registered Organization: Viettel Group, Vietnam
• CIDR Block: 171.232.80.0/21 (allocated 2011-03-04)
• RIR Registry: APNIC
• DNS PTR Record: dynamic-ip-adsl.viettel.vn
• Forward Resolution: viettel.vn

Geolocation:

• Country: US (reported)
• Geolocation Validation: Inconsistent with ISP data (Viettel, Vietnam)
• Note: Geolocation data shows US assignment, but ASN and DNS records indicate Vietnamese infrastructure

Network Services:

• Open Ports: None
• Service Classification: Firewalled / No Services
• TLS Certificate: None
• HTTP Title: None

## THREAT INDICATORS

Active Indicators: None

• Blacklist Count: 0
• DNSBL Listings: 0
• Pulsedive Risk: Not assessed
• Known Campaigns: None
• Is Known Attacker: False
• Is Spam Source: False
• Is Tor Exit Node: False
• Abuse Confidence Score: Not applicable

Historical Analysis:

• Total Observations: 12
• Threat Observation Count: 0
• Threat Persistence Days: 0
• Is Persistently Malicious: False
• Honeypot Hits: 0
• Enumeration Strikes: 0
• WAF Violations: 0
• Total Incidents: 0

## NEIGHBORHOOD ANALYSIS

Subnet: 171.232.87.181/24

• Abuse Density: 0%
• Classification: Clean
• Total Siblings: 1
• Active Siblings: 0
• Threat Siblings: 0
• High Risk Neighbors: 0
• Medium Risk Neighbors: 0
• Low Risk Neighbors: 0

## RELATIONSHIP MAPPING

DNS Associations:

• dynamic-ip-adsl.viettel.vn (hostname)

Related Entities: None identified beyond DNS hostname

## OBSERVATION HISTORY

Recent signal observations (2026-07-30):

• ASN 7552 confirmed for 171.232.80.0/21
• DNSSEC validation: Valid
• SPF record: Present
• DMARC record: Present
• Blacklist status: Clean (0 listings)

## RECOMMENDATIONS

No security actions recommended. The IP address presents no observable threat indicators and should be treated as benign traffic. Standard network monitoring practices apply.

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Analyst Notes: The IP address resolves to a dynamic IP from Viettel infrastructure. The hostname "dynamic-ip-adsl.viettel.vn" indicates this is likely a customer-facing residential or business connection. The discrepancy between US geolocation and Vietnamese ISP assignment may indicate routing anomalies or geolocation database inaccuracies. No defensive actions required at this time.

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