158.158.100.100📋 Copy

# IP INTELLIGENCE BRIEFING: 158.158.100.100

## Executive Summary

IP address 158.158.100.100 is a Microsoft Azure cloud infrastructure endpoint classified as Low Risk with a risk score of 25. The address represents legitimate cloud compute infrastructure with no active malicious indicators detected.

## Ownership and Infrastructure Classification

• Organization: IRT-MICROSOFT-APNIC-SG / Microsoft Corporation
• ASN: AS8075
• Network Block: 158.158.0.0/16 (Microsoft Azure)
• Infrastructure Type: Cloud Compute / Cloud Hosting
• Provider Score: 0 (indicating established, non-suspicious provider)
• Control Plane: Route stable, RPKI validated, DNSSEC valid

## Geolocation Data

• Primary Location: Madrid, Spain (ES)
• Secondary Signal: Singapore, SG (Microsoft data center)
• Geographic Consensus: Mixed signals indicating Microsoft's global cloud distribution
• RTT Analysis: Average 86.4ms from European vantage points

## Threat Assessment

• Reputation: Low Risk
• Abuse Confidence Score: Not applicable
• Blacklist Status: Clean (0 blacklists)
• Tor Exit Node: No
• Known Attacker: No
• Spam Source: No
• Campaign Affiliation: None detected
• Threat Persistence: 0 days

## Network Services and DNS

• Open Ports: None detected (firewalled/no services)
• DNS Resolution: Forward resolution not confirmed
• PTR Records: None
• TLS Certificates: None
• HTTP Services: None detected
• Email Auth: SPF/DMARC not configured (consistent with cloud infrastructure)

## Neighborhood Analysis (158.158.100.0/24)

• Abuse Density: 0 (clean subnet)
• Subnet Classification: Mostly Clean
• Total Siblings: 2 (158.158.100.154, 158.158.100.177)
• Neighbor Risk Scores: 25 (both Low Risk)
• Threat Siblings: 3 (all low risk)

## Historical Observations

• Total Observations: 26 signals
• Observation Period: Recent activity through June 2026
• Risk Trend: Stable with no escalation
• Malicious Activity: No persistent threats observed

## Related Entities

• Network Relationships: 29 relationships all mapped to MICROSOFT-APNIC-AP network
• Campaign Correlations: None detected
• Certificate Matches: 0

## Recommended Actions

Based on the risk profile (score: 25), no immediate blocking or mitigation actions are recommended. The IP represents legitimate Microsoft Azure infrastructure with no malicious indicators. Standard cloud provider policies should apply:

1. Monitor traffic patterns consistent with cloud service usage

2. Allow standard Microsoft Azure traffic patterns (HTTPS, cloud API endpoints)

3. No firewall rules required beyond standard provider allow-listing

4. Maintain normal logging for cloud infrastructure activity

## Intelligence Confidence

High – Multiple validation signals confirm legitimate cloud infrastructure. No contradictory threat indicators present.

---

*Generated from IPDebrief Intelligence Platform*

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