1.55.41.145📋 Copy

## INTELLIGENCE BRIEFING: 1.55.41.145/32

Classification: Moderate Risk (55/100)

Report Date: Current

Assessment: Static Infrastructure with Regional Risk Indicators

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EXECUTIVE SUMMARY

IP 1.55.41.145 is a static infrastructure address allocated to FPTDYNAMICIP-NET (ASN 18403, IRT-VNNIC-AP) within the APNIC RIR registry. Current risk assessment identifies moderate threat potential (55/100) primarily due to DNSBL listings and regional IP allocation patterns. The address currently operates with no open services, minimal operator reputation concerns (0.1304), and no active threat campaign indicators.

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INFRASTRUCTURE PROFILE

Ownership & Registration:

• RIR: APNIC
• Abuse Contact: Available via RDAP
• Historical ownership changes: 0
• Average ownership duration: Unstable (null)

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THREAT INDICATORS

Current Status:

• Known Attacker: No
• Spam Source: No
• Tor Exit Node: No
• Known Campaigns: None
• Blacklist Count: 0
• DNSBL Listed: 3/8 lists

Threat Feed Analysis:

• Pulsedive Risk: Not detected
• Abuse Confidence Score: Not calculated
• Pulsedive Campaigns: None

Risk Composition:

• Provider Score: 0/100
• Authority Score: 0/100
• Stability Score: 0/100 (Unstable classification)

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NETWORK CLASSIFICATION

• Provider: No
• Infrastructure Type: Undetermined
• Cloud/CDN/VPN/Proxy: No
• Hosting: No
• Mobile/Residential: No
• Bogon: No
• Anycast: No

Control Plane:

• Route Stability: False
• MOAS: No
• RPKI State: Not evaluated
• IRR Consistency: Not evaluated
• Route Changes (30d): 0

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OBSERVATION HISTORY (10 Signals)

Latest Observation: 2026-07-25T00:19:17+00:00

Key Historical Signals:

1. Geolocation: Consistent Vietnam (VN) attribution across all observations

2. Organization: Persistent IRT-VNNIC-AP association

3. Netblock: 1.55.32.0/20 maintained

4. Operator Score: 0.1304 (Minimal)

5. Service Detection: No CDN, Tor, VPN, or proxy indicators

Temporal Analysis:

• Threat Persistence Days: 0
• Threat Observation Count: 0
• Persistently Malicious: False
• No significant signal degradation or escalation detected

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NETWORK RELATIONSHIPS

Identified Connections:

• Same Network: FPTDYNAMICIP-NET (1.55.32.0/20)
• Related Entities: 1 network-level relationship only
• Hostnames: None detected
• Certificates: None detected

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NEIGHBORHOOD ANALYSIS

Subnet: 1.55.41.145/24

Abuse Density: 0

Risk Distribution: High=0, Medium=0, Low=0

Active Siblings: 0

Threat Siblings: 0

Assessment: No neighboring IP activity detected within the immediate /24 subnet. Abuse density at zero indicates isolated address behavior.

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SERVICE ENUMERATION

Service Purpose: Firewalled / No Services

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RECOMMENDED SECURITY ACTIONS

Immediate Actions:

1. Firewall Blocking: Recommended for immediate implementation

- iptables: `iptables -A INPUT -s 1.55.41.145 -j DROP`

- nftables: `nft add rule inet filter input ip saddr 1.55.41.145 drop`

- Cloudflare WAF: Block with expression `ip.src eq 1.55.41.145`

- AWS WAF: Add 1.55.41.145/32 to block list

2. Monitoring Enhancement: Increase logging verbosity and review recent activity from this IP

- Severity: High

- Rationale: Elevated risk score (55/100)

Action Rationale:

While no active threat indicators are present, the moderate risk score (55/100) combined with DNSBL listings and regional IP allocation patterns warrants defensive blocking and enhanced monitoring. The absence of open services suggests the IP is not currently serving as an active attack source.

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INTELLIGENCE JUDGMENT

This IP represents low-to-moderate threat potential. The address is registered to a legitimate Vietnamese ISP infrastructure (FPTDYNAMICIP-NET) with no evidence of active malicious activity. Primary concerns are:

• DNSBL presence (3/8 lists)
• Moderate risk score (55/100)
• Regional IP allocation (Vietnam) with elevated threat activity in the broader region

Recommendation: Block at perimeter firewall with logging enabled for future analysis. No immediate incident correlation required. Monitor for behavioral changes or service activation.

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END OF BRIEFING

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