81.43.11.241📋 Copy

# IPDebrief Intelligence Briefing

Subject: 81.43.11.241/32

Classification: Moderate Risk

Date: 2026-07-27

Prepared By: IPDebrief Intelligence Analysis

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## Executive Summary

IP address 81.43.11.241 presents a moderate risk profile (Score: 55/100) with mixed geolocation signals. The IP is a residential static address associated with Rima Telecom infrastructure, currently showing no active threat indicators but flagged for monitoring due to elevated risk classification.

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## Technical Profile

Network Classification:

• ASN: 3352 (Comcast)
• BGP Prefix: 81.43.0.0/16
• RIR: RIPE (administrative registration)
• CIDR Block: 81.43.0.0/16

Geolocation Discrepancy:

• Initial Classification: New York, US
• Recent Signal: Madrid, Spain (Administradores Telefonica de Espana)
• Geography Consensus: Unresolved (2 conflicting sources)
• Accuracy Radius: Not available

DNS Resolution:

• PTR Hostname: 241.red-81-43-11.staticip.rima-tde.net
• Forward Resolution: Confirmed (1 record)
• Email Authentication: SPF and DMARC configured
• Domain Authority: rima-tde.net

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## Threat Assessment

Current Risk Indicators:

• Risk Score: 55/100 (Moderate)
• Blacklist Count: 0
• Known Attacker: False
• Tor Exit Node: False
• Spam Source: False

Control Plane Data:

• DNSBL Listings: 3/8 total lists
• DNSSEC: Valid
• Route Stability: False (unstable routing)
• Threat Persistence: 0 days
• Campaign Correlation: 0 IPs correlated

Service Exposure:

• Open Ports: None (firewalled)
• Active Services: None detected
• TLS Certificates: None
• HTTP Banner: None

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## Neighborhood Analysis

Subnet: 81.43.11.241/24

• Abuse Density: 0.0 (clean)
• Classification: Clean
• Total Sibling IPs: 1
• Active Threat Siblings: 0
• Inherited Risk: 0

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## Historical Signal Analysis

Observation Count: 16 signals recorded

Recent Activity (2026-07-27):

• Signal Type 4: RIR assignment (RIPE) - Confidence: 90%
• Signal Type 3: Geolocation (Madrid, ES) - Confidence: 95%
• Signal Type 5: Network role classification - Confidence: 30%
• Signal Type 13: Neighborhood classification - Confidence: 40%
• Signal Type 17: Traceroute analysis - Confidence: 85%

Temporal Indicators:

• Ownership Changes: 0
• Threat Observation Count: 0
• Persistently Malicious: False

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## Relationship Graph

Direct Associations:

• DNS Hostname: 241.red-81-43-11.staticip.rima-tde.net
• No additional organizational or certificate relationships detected

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## Recommended Actions

Monitoring Priority: HIGH

Recommended Actions:

1. Increase logging verbosity and review recent activity from this IP source due to elevated risk score (55/100)

2. Firewall Rules Implementation:

- iptables: `iptables -A INPUT -s 81.43.11.241 -j DROP`

- nftables: `nft add rule inet filter input ip saddr 81.43.11.241 drop`

- nginx: `deny 81.43.11.241;`

3. Cloud/WAF Integration:

- Cloudflare WAF: Block with expression `ip.src eq 81.43.11.241`

- AWS WAF: Add 81.43.11.241/32 to IP set

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## Intelligence Notes

• The IP exhibits geographic inconsistency between US and Spain classifications, suggesting either multi-region routing or data source discrepancies
• No active threat signals currently detected, but the moderate risk score warrants monitoring
• Clean neighborhood classification indicates no associated malicious activity in the /24 subnet
• Route instability detected may indicate BGP route changes or transient routing issues

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End of Briefing

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