139.228.161.54📋 Copy

# THREAT INTELLIGENCE BRIEFING

IP Address: 139.228.161.54/32

Date: July 27, 2026

Classification: LOW RISK

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## EXECUTIVE SUMMARY

IP 139.228.161.54 is classified as a low-risk address (Risk Score: 25/100) associated with Indonesian infrastructure operator IRT-BM-ID. The IP shows no active threat indicators, no open services, and operates within a clean neighborhood profile. No immediate action required.

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## OWNERSHIP & GEOLOCATION

• Organization: IRT-BM-ID (ASN 23700)
• Network: BM-ID (139.228.0.0/16)
• Location: Surabaya, East Java, Indonesia (ID)
• RIR: ARIN
• Registration Date: Not available in profile

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## THREAT ASSESSMENT

Assessment: No malicious indicators detected. IP does not appear in threat feeds or campaign correlations.

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## NETWORK CHARACTERISTICS

• Service Purpose: Firewalled / No Services
• Open Ports: None detected
• TLS Certificates: None
• HTTP Services: None
• Network Classification: Infrastructure (non-public)

Note: The IP is not classified as a provider, CDN, VPN, proxy, Tor, hosting, mobile, or residential endpoint.

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## DNS ANALYSIS

• PTR Hostname: fm-dyn-139-228-161-54.fast.net.id
• Forward Resolution: 1 hostname (net.id)
• Email Authentication: SPF: No | DMARC: No
• Forward Confirmed: No

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## NEIGHBORHOOD ANALYSIS

• Subnet: 139.228.161.54/24
• Abuse Density: 0%
• Classification: Clean
• Threat Siblings: 0
• Active Siblings: 0

Assessment: No related high-risk IPs detected in the /24 subnet.

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## OBSERVATION HISTORY (20 observations)

• Ownership Changes: 0
• Threat Persistence Days: 0
• Persistently Malicious: No
• Recent Signals:

- Geo validation: ICMP blocked, unable to validate

- Neighborhood classification: Clean

- No threat observations recorded

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## CONTROL PLANE

• Origin ASN: 23700
• BGP Prefix: 139.228.160.0/19
• RPKI State: Not available
• DNSSEC Valid: Yes
• DNSBL Listed: 1 of 8 lists (minor listing)
• Route Stability: Unstable (route changes in 30d: 0)

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## RECOMMENDED ACTIONS

No firewall rules or blocking recommended. The IP presents minimal risk based on current profile.

Monitoring Notes:

• Maintain baseline observation for infrastructure IPs
• Monitor for service activation (current state: no open ports)
• The minor DNSBL listing warrants periodic review if traffic patterns change

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## SOC ANALYST NOTES

This IP is part of Indonesian network infrastructure (IRT-BM-ID). The absence of open services and clean neighborhood profile indicates legitimate network usage rather than malicious activity. The single DNSBL listing is inconclusive and requires correlation with other threat indicators before escalation.

Confidence Level: High

Priority: Low

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