4.236.173.163📋 Copy

# Intelligence Briefing: IP 4.236.173.163/32

Classification: Low Risk - Microsoft Azure Cloud Infrastructure

Date: 2026-06-21

Analyst: IPDebrief Intelligence Team

## Executive Summary

Target IP 4.236.173.163 is a Microsoft Azure cloud infrastructure address with an overall low-risk profile (Risk Score: 0). The IP is part of Microsoft Corporation's network (ASN 8075, CIDR 4.224.0.0/12) and is geolocated to Virginia, US. Current threat indicators show minimal malicious activity, though the IP has been observed on threat lists in the past.

## Profile Details

Ownership & Network Role:

• Organization: Microsoft Corporation
• ASN: 8075 (MSFT)
• Network: 4.224.0.0/12
• Infrastructure Type: CloudCompute (Microsoft Azure)
• Classification: Firewalled / No Services
• RIR: ARIN

Geolocation:

• Country: United States (US)
• Region: Virginia
• City: Virginia
• Coordinates: 37.37, -79.46
• Timezone: America/New_York

Threat Indicators:

• Abuse Confidence Score: Not applicable
• Is Tor Exit Node: No
• Is Known Attacker: No
• Is Spam Source: No
• Blacklist Count: 0
• Known Campaigns: None
• Threat Feeds: Empty

Network Services:

• Open Ports: None detected
• TLS Certificate: None
• HTTP Title: None
• Service Purpose: Firewalled / No Services

## Control Plane Analysis

• Origin ASN: 8075
• BGP Prefix: 4.224.0.0/12
• Route Stability: False
• Route Changes (30d): 0
• DNSSEC Valid: Yes
• DNSBL Listed Count: 0
• Operator Score: 0.1304 (Minimal)
• RPKI State: Not validated

## Neighborhood Assessment (4.236.173.0/24)

• Subnet Classification: Mostly Clean
• Abuse Density: 0.6
• Inherited Risk: 7
• Total Siblings: 5
• Active Siblings: 1
• Threat Siblings: 3
• Neighbor Risk Distribution: 0 High, 0 Medium, 4 Low

Neighbor IPs:

• 4.236.173.19 (Risk: 25, Authority: 50)
• 4.236.173.23 (Risk: 25, Authority: 50)
• 4.236.173.25 (Risk: 25, Authority: 50)
• 4.236.173.166 (Risk: 25, Authority: 50)

All neighboring IPs are low-risk Microsoft infrastructure addresses with consistent risk scores.

## Historical Observations

Total observations recorded: 17

Key Historical Signals:

• 2026-06-21: Threat listing activity detected (8 total lists, 1 listed with high severity)
• 2026-06-16: Subnet analysis showed 0.6 abuse density with mostly_clean classification
• 2026-06-16: Ownership data confirmed stable with no changes
• 2026-06-16: Threat list checks returned 0 blacklists

Temporal Analysis:

• Threat Persistence Days: 0
• Threat Observation Count: 1
• Is Persistently Malicious: False
• Ownership Changes: 0

## Relationship Graph

The IP maintains 9 relationships, all categorized as "Same Network" with target value MSFT. This confirms the IP's integration within Microsoft's broader network infrastructure.

## Recommendations

Security Actions:

• No immediate blocking required. This IP is part of Microsoft Azure infrastructure.
• Standard allow rules for Microsoft Azure traffic may apply based on organizational policy.
• Monitor for any changes in service behavior or new threat indicators.

Firewall Considerations:

• No specific firewall rules recommended due to low-risk profile.
• If Microsoft Azure services are permitted, allow traffic on appropriate ports.
• Consider allowing established Microsoft service traffic patterns.

Ongoing Monitoring:

• Track any changes in threat listing status.
• Monitor neighborhood activity for coordinated abuse patterns.
• Review historical observations periodically for emerging threats.

## Conclusion

IP 4.236.173.163 is a legitimate Microsoft Azure cloud infrastructure address with a low-risk profile. While the IP has been observed on some threat lists historically, current indicators show no active malicious behavior. The IP belongs to a clean subnet with low-risk neighbors and is part of Microsoft's trusted network infrastructure. SOC analysts may treat this IP as benign unless specific contextual indicators suggest otherwise.

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