181.43.35.144📋 Copy

# IP Intelligence Briefing: 181.43.35.144/32

## Executive Summary

The IP address 181.43.35.144 is identified as a low-risk infrastructure endpoint operated by Entel Chile S.A., a major telecommunications provider in Chile. The IP demonstrates stable ownership, proper DNS and email authentication configurations, and no active threat indicators. Recommended action: No immediate blocking required; monitor for operational changes.

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## Ownership & Network Context

• Organization: ENTEL CHILE S.A.
• ASN: AS27651 (entel chile s.a.)
• CIDR Block: 181.43.32.0/22
• RIR: LACNIC
• Abuse Contact: cescobar@entel.cl
• Registration: Active

The IP is part of Entel's corporate infrastructure, located in Providencia, Santiago Region, Chile (coordinates: -33.43, -70.62). The address resolves via reverse DNS to bi144.entelchile.net, confirming legitimate operational use.

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## Risk Profile Assessment

• Overall Risk Score: 25 (Low Risk)
• Reputation: Low Risk
• Operator Score: 0.1304 (Minimal)
• DNSBL Listings: 1 of 8 total lists (minimal exposure)

Threat Indicators:

• Not identified as Tor exit node
• Not flagged as known attacker
• Not marked as spam source
• Zero blacklist count on major feeds
• No active threat campaigns correlated

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## Network Role & Services

• Network Classification: Firewalled / No Services
• Open Ports: None detected
• Infrastructure Type: Corporate/Telecom infrastructure
• Connection Type: Not cloud, CDN, VPN, or hosting
• Mobile Carrier: No association

The endpoint shows no active service exposure, consistent with a firewall or network infrastructure device.

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## Email Authentication Status

• SPF Record: Configured (hasSPF: true)
• DMARC Record: Configured (hasDMARC: true)
• Forward Resolution: 1 hostname (bi144.entelchile.net)

Proper email authentication records indicate legitimate organizational use.

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## Neighborhood Analysis

• Subnet: 181.43.35.0/24
• Abuse Density: 0 (clean subnet)
• Neighbor Count: 1 (181.43.35.156)
• Neighbor Risk: 0 (low)
• Risk Distribution: 1 low-risk, 0 medium, 0 high

The /24 subnet demonstrates clean operational characteristics with no abuse density.

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## Observation History (Last 13 Observations)

Most Recent: 2026-07-25

• Ownership: Consistent ENTEL CHILE S.A. attribution
• Geolocation: Stable Santiago, Chile coordinates
• Threat Signals: 1 pulse detected (AlienVault OTX)
• Operator Score: 0.1304 (Minimal)

The IP exhibits temporal stability with no significant ownership changes or threat escalation patterns.

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## Relationship Graph

• DNS Associations: bi144.entelchile.net (3 relationship entries)
• No organizational or network-level relationships beyond DNS

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## Recommended Actions

Based on the risk profile and network context:

1. Allow Traffic: No blocking recommended for legitimate business operations

2. Monitor: Track for changes in service patterns or threat indicators

3. No Firewall Rules Required: IP does not present actionable threats

4. Geolocation Verification: Confirmed Chile origin; validate against local access policies

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## Conclusion

IP 181.43.35.144 represents normal operational infrastructure from a legitimate Chilean telecommunications provider. The endpoint demonstrates clean threat posture, proper DNS/email authentication, and no signs of malicious activity. SOC teams should treat this as a benign infrastructure IP unless operational context suggests otherwise.

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