36.82.125.37📋 Copy

# IP INTELLIGENCE BRIEFING

Target: 36.82.125.37/32

Date: 2026-07-30

Classification: MODERATE RISK – DEFENSIVE MONITORING RECOMMENDED

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## EXECUTIVE SUMMARY

IP 36.82.125.37 is a residential/corporate endpoint located in Surabaya, East Java, Indonesia (ASN 7713, Febrian Setiadi). The IP presents a moderate risk score of 50 with a clean subnet classification and no active threat indicators. However, the IP is listed on 2 of 8 DNSBLs and exhibits unstable routing characteristics. The address shows no open ports or active services, and the surrounding /24 subnet demonstrates zero abuse density. SOC analysts should monitor for behavioral anomalies while maintaining standard defensive posture.

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## OWNERSHIP & INFRASTRUCTURE

Control Plane: Routing status flagged as unstable (isRouteStable: false). The IP is listed on 2 DNSBLs out of 8 total lists checked. Operator score: 0.1304 (minimal threat).

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## THREAT INDICATORS

Current Risk Assessment:

• Overall Risk Score: 50/100 (Moderate)
• Abuse Confidence Score: Not available
• Known Attacker: False
• Spam Source: False
• Tor Exit Node: False
• Blacklist Count: 0 (active threat feeds)
• Known Campaigns: None detected

Threat Persistence:

• Threat observation count: 0
• Persistently malicious: False
• Campaign likelihood: Not detected
• Certificate matches: 0

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## NETWORK BEHAVIOR & SERVICES

Service Exposure:

• Open Ports: None detected
• HTTP Services: No active HTTP endpoints
• TLS Certificates: None
• DNS Resolution: No PTR hostnames, no forward resolution
• Email Reputation: No email authentication records (SPF/DMARC)

Network Classification:

• Provider: Not identified
• Infrastructure Type: Not identified
• Cloud/CDN/VPN/Proxy: All negative
• Mobile Carrier: Not identified
• Residential: Not confirmed

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## SUBNET ANALYSIS

Neighborhood Profile (36.82.125.37/24):

• Abuse Density: 0.0
• Classification: Clean
• Inherited Risk: 0
• Total Siblings: 1
• Active/Threat Siblings: 0
• Neighbor Risk Distribution: No high/medium/low risk neighbors identified

Assessment: The surrounding /24 subnet demonstrates no abuse activity, suggesting this IP is an isolated endpoint rather than part of a coordinated infrastructure.

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## OBSERVATION HISTORY

Historical Signals (13 observations):

• Most recent activity: 2026-07-30
• Geolocation: Consistent Indonesia (ID) attribution with confidence 0.30–0.85
• Network Classification: Clean classification with confidence 0.40
• Ownership: 0 ownership changes detected
• Threat Persistence: 0 threat observation days

Temporal Analysis: No evidence of escalating threat behavior. The IP has remained stable in classification with no persistent malicious activity detected over the observation window.

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## RELATIONSHIP GRAPH

Identified Relationships (5 entries):

• All relationships map to the same network: TLKM_BB_SERVICE_36_82_DIVRE5-6
• No external hostname, certificate, or organizational relationships beyond the assigned network block
• No correlated IPs detected

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## DEFENSIVE RECOMMENDATIONS

Risk-Based Actions:

Given the moderate risk score of 50 combined with DNSBL listings and routing instability, the following controls are recommended:

Firewall Rules:

• iptables: `iptables -A INPUT -s 36.82.125.37 -j DROP`
• nftables: `nft add rule inet filter input ip saddr 36.82.125.37 drop`
• nginx: `deny 36.82.125.37;`
• pfSense: `36.82.125.37/32`
• Cloudflare WAF: Block with expression `ip.src eq 36.82.125.37`
• AWS WAF: `Addresses: ["36.82.125.37/32"]`

SOC Monitoring Priorities:

1. Monitor for DNSBL list updates (currently 2 of 8 lists)

2. Watch for emergence of open ports or service banners

3. Track routing stability changes

4. Correlate with any abuse reports from the Febrian Setiadi organization

5. Review for any changes in geolocation attribution

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## FINAL ASSESSMENT

IP 36.82.125.37 is classified as MODERATE RISK (50/100) with no active threat indicators. The subnet shows clean classification with zero abuse density. While no immediate threat activity is present, the DNSBL listings and routing instability warrant continued monitoring. Standard defensive blocking is recommended pending further behavioral analysis.

Classification: MODERATE RISK – DEFENSIVE MONITORING

Action Level: BLOCK (with review)

Confidence: HIGH

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