181.43.219.87📋 Copy

# IP Intelligence Briefing: 181.43.219.87/32

Date: 2026-07-23

Classification: Low Risk / Defensive Monitoring

Prepared For: SOC Analysts

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## Executive Summary

IP address 181.43.219.87 belongs to ENTEL CHILE S.A. (ASN 27651) and is geolocated to Santiago, Chile. The asset carries a low risk score of 25 and is classified as a firewalled endpoint with no active services. The IP is not associated with known malicious campaigns, Tor exit nodes, proxies, or hosting infrastructure.

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## Ownership and Network Profile

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## Network Classification

• Infrastructure Type: Firewalled / No Services
• Open Ports: None detected
• Service Detection: No HTTP, TLS, or application banners
• Provider Status: Not a CDN, proxy, VPN, Tor, or hosting provider
• ISP Classification: Standard ISP allocation

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## DNS Resolution

• PTR Record: xxb219-87.entelchile.net
• Reverse DNS: Resolved successfully
• Forward Resolution: Not confirmed
• Email Authentication: SPF and DMARC records present
• Hosted Domains: None detected

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## Threat Intelligence Assessment

Risk Indicators

• Overall Risk Score: 25 (Low)
• Abuse Confidence: Not elevated
• Blacklist Status: Listed on 1 of 8 DNSBLs (high severity listing noted)
• Known Campaigns: None correlated
• Campaign Likelihood: Not detected

Threat Feeds Analysis

• Tor Exit Node: No
• Known Attacker: No
• Spam Source: No
• Residential/Mobile: No

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## Neighborhood Analysis (181.43.219.0/24)

• Subnet Classification: Clean
• Abuse Density: 0%
• Total Siblings: 2
• Active Siblings: 0
• Threat Siblings: 0
• Neighbor IP: 181.43.219.1 (risk score: null)

The subnet shows minimal abuse activity with no inherited risk signals.

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## Relationship Graph

Connected Entities:

• Network: 181.43.192.0 - 181.43.255.255 (ENTEL CHILE S.A.)
• Hostnames: xxb219-87.entelchile.net (DNS association)

No additional organizational or certificate relationships detected.

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## Control Plane Analysis

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## Observation History

Total Observations: 18 signals collected

Most Recent: 2026-07-23T18:53:07 UTC

Recent Signal Summary:

• Network Classification: Clean (abuse density: 0)
• Geolocation: Chile (Santiago) - confidence: 0.52
• Ownership: Stable (no changes detected)
• Threat Persistence: None observed
• Blacklist Activity: 1 listing out of 8 total lists (max severity: high)

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## Recommended Actions

Firewall Rules

No specific firewall rules were generated due to the low-risk classification. Standard ingress filtering and provider-based allow-listing is sufficient.

Monitoring Priorities

• Monitor DNSBL listing status (1 high-severity listing)
• No immediate blocking recommended
• Include in passive monitoring for any future threat correlation

Threat Hunting Indicators

• No actionable IOC indicators available
• No malware, phishing, or spam campaign correlations
• No residential/mobile abuse patterns detected

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## Assessment Conclusion

IP 181.43.219.87 represents a standard residential or enterprise endpoint under ENTEL CHILE S.A. infrastructure with no active malicious indicators. The single DNSBL listing warrants periodic review but does not warrant immediate blocking. Continue monitoring for changes in service patterns or new threat associations.

Risk Level: LOW

Action Required: Standard monitoring

Priority: Routine

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