4.205.25.159📋 Copy

# IP INTELLIGENCE BRIEFING: 4.205.25.159/32

Date: Current Analysis Period

Classification: LOW RISK - Microsoft Azure Cloud Infrastructure

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## EXECUTIVE SUMMARY

IP address 4.205.25.159 is identified as Microsoft Azure cloud infrastructure (AS8075, Microsoft Corporation) with a current risk score of 25. The IP operates as cloud compute infrastructure with no detected open services or active threat indicators. Historical data indicates prior DNSBL listings that have been resolved.

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## NETWORK CLASSIFICATION & INFRASTRUCTURE

Provider: Microsoft Azure (AS8075)

Infrastructure Type: CloudCompute / Hosting

Network Role: Provider

CIDR Block: 4.192.0.0/12 (Microsoft Azure allocation)

The IP belongs to Microsoft's cloud infrastructure backbone, operating under the 4.192.0.0/12 prefix assignment. The IP is classified as cloud infrastructure with hosting capabilities enabled.

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## GEOLOCATION DATA

Current Location: Toronto, Ontario, Canada (43.65°N, -79.38°W)

Timezone: America/Toronto

Geographic Accuracy: 150km radius

RIR: ARIN

Multiple geolocation sources confirm Canadian positioning, though historical observations show US associations during earlier periods of activity.

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## THREAT ASSESSMENT

Current Risk Score: 25 (Low Risk)

Abuse Confidence Score: Not applicable

Blacklist Count: 0 (current)

Known Attacker Status: No

Spam Source Status: No

Tor Exit Node: No

Current Threat Indicators:

• No active threat feeds detected
• No known campaigns correlated
• No threat indicators in real-time feeds
• Reputation sources: None currently active

Historical Threat Context:

Observations from 2026-06-20 indicate the IP was listed on 8 DNSBLs with maximum severity rating of "high" during that period. AlienVault OTX signals showed threat associations during this timeframe. Current status shows no active listings or threat indicators.

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## NEIGHBORHOOD ANALYSIS

Subnet: 4.205.25.159/24

Abuse Density: 0 (mostly_clean classification)

Total Siblings: 1

Active Threat Siblings: 1

Risk Distribution: No high or medium risk neighbors detected

The immediate /24 subnet shows low abuse density with minimal threat presence, consistent with Microsoft Azure's infrastructure reputation.

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## RELATIONSHIP GRAPH

Total Relationships: 17

Primary Association: Microsoft (MSFT) networks

All relationship links point to Microsoft infrastructure networks, confirming the IP's integration within Microsoft's cloud ecosystem. No external organization or certificate relationships detected.

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## SERVICE ENUMERATION

Open Ports: None detected

HTTP Services: None

TLS Certificates: None

Banner Information: None accessible

The IP presents as "Firewalled / No Services" with no detectable open ports or active service enumeration. This is consistent with Microsoft Azure infrastructure behavior where endpoints are typically accessed through API gateways or application layers.

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## OBSERVATION HISTORY

Total Observations: 19 signals

The observation timeline shows the IP has been consistently associated with Microsoft Azure infrastructure. The June 20, 2026 period represents a temporary elevated threat state that has since normalized.

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## CONTROL PLANE DATA

Origin ASN: AS8075

BGP Prefix: 4.192.0.0/12

Route Stability: Unstable (not route stable)

RPKI State: Not validated

DNSSEC: Valid

DNSBL Listed: 0 (current) / 8 (historical)

Operator Score: 0.1304 (Minimal)

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## RECOMMENDED ACTIONS

Current Risk Level: Low Risk (Score: 25)

Recommended Actions: None at this time

Based on current risk profile and infrastructure classification, no immediate blocking or filtering actions are recommended. The IP operates as legitimate Microsoft Azure cloud infrastructure with no active threat indicators.

SOC Analyst Notes:

• Monitor for any changes in DNSBL status or threat feed associations
• Historical elevated threat activity suggests maintaining situational awareness
• Current status consistent with legitimate Microsoft Azure cloud services
• No immediate firewall rule changes required

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END OF BRIEFING

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