181.42.255.225📋 Copy

# IP Intelligence Briefing: 181.42.255.225/32

Date: Current

Classification: Moderate Risk / Telecom Infrastructure

Risk Score: 40/100

## Executive Summary

IP address 181.42.255.225 is registered to Entel PCS Telecomunicaciones S.A. (ASN 27651) and located in Santiago, Chile. The IP demonstrates moderate risk characteristics with two DNSBL listings out of eight checked lists, though no active threat indicators or open services were observed. The address is classified as "clean" with zero abuse density in its /24 subnet.

## Infrastructure Profile

## DNS Resolution

• PTR Record: client-181-42-255-225.imovil.entelpcs.cl
• Forward Resolution: Unconfirmed
• Domain: entelpcs.cl
• Hosted Domain Count: 0
• Email Authentication: SPF and DMARC not configured

## Network Services Assessment

No active services detected on the IP address:

• Open Ports: None
• TLS Certificate: Not observed
• HTTP Title: Not observed
• Service Purpose: Firewalled / No Services

The IP appears to be assigned but not actively serving traffic, or is behind a firewall that blocks external probes.

## Threat Indicators

## Neighborhood Analysis

The /24 subnet (181.42.255.225/24) shows:

• Abuse Density: 0 (Clean)
• Threat Siblings: 0
• Active Siblings: 0
• Total Siblings: 1
• Inherited Risk: 0

No neighboring IPs in the same subnet exhibit threat activity.

## Relationship Graph

• Network Association: 181.42.0.0 - 181.42.255.255
• DNS Association: client-181-42-255-225.imovil.entelpcs.cl

## Observation History

Thirteen observations recorded, most recent on 2026-07-22. Historical signals show consistent registration data with no escalation in threat posture. No persistent malicious activity detected across the observation window.

## Control Plane Intelligence

• Origin ASN: 27651
• BGP Prefix: 181.42.240.0/20
• Route Stability: Not stable (false)
• RPKI State: Not validated
• IRRC Consistency: Not verified
• DNSSEC Valid: Yes
• Operator Score: 0.1304 (Minimal)

## Recommended Security Actions

Based on the IP's risk profile (Score: 40), the following defensive rules are recommended:

Firewall Rules

```bash

# iptables

iptables -A INPUT -s 181.42.255.225 -j DROP

# nftables

nft add rule inet filter input ip saddr 181.42.255.225 drop

```

WAF Rules

• Cloudflare WAF: Block 181.42.255.225 (Risk: 40)
• AWS WAF: Block 181.42.255.225/32

pfSense

• Rule: 181.42.255.225/32

## Intelligence Assessment

Primary Finding: The IP address belongs to Entel PCS, a legitimate Chilean telecommunications provider. The moderate risk score (40) is driven primarily by DNSBL listings rather than active malicious behavior.

Risk Context:

• Zero open ports suggest the IP is either unassigned, firewalled, or in reserve
• No active threat indicators despite the 40 risk score
• Clean neighborhood classification with no sibling abuse
• Legitimate telecom organization ownership

Recommendation: Monitor for activity but no immediate blocking required unless observed malicious behavior emerges. The DNSBL listings warrant investigation if outbound connections from this IP are observed, but the absence of open services and active threats suggests low operational risk.

Action Priority: LOW-MONITOR

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*Generated by IPDebrief Intelligence Platform*

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