186.4.28.149📋 Copy

# IPDEBRIEF INTELLIGENCE BRIEFING

Target: 186.4.28.149/32

Classification: Residential Endpoint

Date: Analysis completed

Risk Level: Moderate Risk (55/100)

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## EXECUTIVE SUMMARY

IP 186.4.28.149 is a residential endpoint assigned to MILLICOM CABLE COSTA RICA S.A. (ASN 262197) within the 186.4.0.0/18 block. The IP exhibits moderate risk characteristics with three DNSBL listings and inconsistent geolocation data. No active threat indicators, campaign affiliations, or malicious behavior observed. Subnet shows zero abuse density with no neighboring threats.

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## NETWORK ATTRIBUTES

• Organization: MILLICOM CABLE COSTA RICA S.A.
• Network Block: 186.4.0.0 - 186.4.63.255 (186.4.0.0/18)
• ASN: 262197
• RIR: LACNIC
• Registration Date: Not available
• Abuse Contact: abuse@tigo.co.cr
• Network Role: Residential Endpoint
• Infrastructure Type: Residential

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## GEOLOCATION ANALYSIS

Geolocation data shows inconsistencies across sources:

• Primary Location: Costa Rica (CR), San José, Provincia de San José
• Secondary Location: United States (US), Boston, MA
• Lat/Long: 9.9346, -84.0706 (Costa Rica coordinates)
• Geo Consensus: False
• Geo Plausible: False
• Postcode: 10903

The geolocation discrepancy between Costa Rica and United States sources warrants attention during threat correlation.

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## THREAT INDICATORS

• Risk Score: 55 (Moderate Risk)
• Abuse Confidence Score: Not available
• Blacklist Count: 3 DNSBL listings out of 8 total lists checked
• Tor Exit Node: No
• Known Attacker: No
• Spam Source: No
• Known Campaigns: None identified
• Threat Feeds: Empty

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## OBSERVATION HISTORY

Total observations: 13 signals recorded

• Recent Classification: Residential (confidence 0.40)
• Provider Signal: MILLICOM CABLE COSTA RICA S.A. (confidence 0.90)
• Geolocation Signal: Costa Rica (confidence 0.70)
• Operator Score: 0.15 (Minimal operator score)
• DNSSEC: Validated

No persistent malicious behavior or ownership changes detected.

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## NETWORK RELATIONSHIPS

• Same Network: 186.4.0.0 - 186.4.63.255
• Organizational Relationships: None
• Hostname Relationships: None
• Certificate Relationships: None
• Correlated IPs: 0

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## SUBNET ANALYSIS (186.4.28.0/24)

• Abuse Density: 0%
• Neighbor Count: 0
• Risk Distribution: 0 High / 0 Medium / 0 Low
• Active Siblings: 0
• Threat Siblings: 0

The /24 subnet shows no neighbor activity or elevated abuse patterns.

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## CONTROL PLANE ANALYSIS

• Route Stability: Unstable (isRouteStable: false)
• BGP Prefix: 186.4.28.0/23
• RPKI State: Not available
• IRR Consistency: Not available
• Route Changes (30d): 0
• DNSBL Listed: 3/8 lists
• Operator Score: 0.1304 (Minimal)

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## SERVICES & DNS

• Open Ports: None detected
• TLS Certificate: None
• HTTP Title: None
• PTR Hostnames: None
• Forward Resolution Count: 0
• Hosted Domains: 0
• Email Auth: SPF: No, DMARC: No

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## RECOMMENDED ACTIONS

Based on the moderate risk profile and residential classification:

1. Monitor for Escalation: Track geolocation inconsistencies; verify actual endpoint location if this IP targets your infrastructure

2. DNSBL Review: Investigate the three DNSBL listings to determine if legitimate or false positives

3. Route Stability Alert: Monitor for BGP prefix instability in the 186.4.0.0/18 block

4. Baseline as Normal: No immediate blocking required; treat as residential endpoint with standard monitoring

5. Subnet Context: No neighbor threats detected; isolated risk at this IP level

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## CONCLUSION

IP 186.4.28.149 presents as a legitimate residential endpoint with moderate risk scoring primarily driven by DNSBL listings and geolocation inconsistencies. The absence of threat indicators, campaign affiliations, or malicious behavior suggests this IP is not actively engaged in attacks. SOC teams should monitor for risk escalation while treating the IP as a standard residential endpoint. No immediate remediation actions required.

Threat Intelligence Confidence: Medium (based on residential classification and DNSBL presence)

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