20.151.255.144📋 Copy

## IP Intelligence Briefing: 20.151.255.144/32

Classification: Moderate Risk - Cloud Infrastructure

Date of Assessment: 2026-06-07

Executive Summary

IP 20.151.255.144 is identified as Microsoft Corporation (ASN 8075) infrastructure deployed on Microsoft Azure cloud platform. The IP carries a risk score of 50 (Moderate Risk) and is listed on 2 of 8 DNS blacklist feeds. While the neighborhood subnet (20.151.255.0/24) shows clean classification with zero abuse density, the IP's DNSBL presence warrants monitoring.

Technical Profile

Ownership & Infrastructure:

• Organization: Microsoft Corporation
• ASN: 8075
• Infrastructure Type: CloudCompute (Microsoft Azure)
• CIDR Block Origin: 20.150.0.0/15
• Connection Type: Firewalled/No Services Detected

Geolocation:

• Country: Canada (CA)
• Region: Ontario (ON)
• City: Toronto
• Coordinates: 43.65°N, 79.38°W
• Accuracy: 150km radius

Network Role:

• Provider: Microsoft Azure
• Is Cloud: Yes
• Is Hosting: Yes
• Is CDN/VPN/Proxy: No
• Is Anycast: No

Threat Indicators

DNS Blacklist Status:

• Listed on 2 DNSBLs
• Total DNSBL checks: 8
• Maximum severity: High
• No Tor exit node activity
• No known attacker indicators
• No spam source classification

Service Exposure:

• Open ports: None detected
• TLS certificates: None
• HTTP services: None
• Reverse DNS (PTR): None

Control Plane:

• Route stability: Not stable (0 route changes in 30-day window)
• RPKI state: Not available
• IRR consistency: Not available
• DNSSEC: Valid

Historical Analysis

Observation history spans 16 data points with recent activity through June 2026. Key temporal patterns:

• Consistent cloud infrastructure classification
• Stable geolocation signals (Toronto, ON)
• DNSBL listings observed with high severity categorizations
• No evidence of persistent malicious behavior (threatPersistenceDays: 0)
• No campaign correlations

Relationship Graph

The IP maintains 14 relationships, all categorized as "Same Network" with target value "MSFT." This confirms the IP is part of Microsoft's broader network infrastructure. No external or suspicious entity relationships detected.

Neighborhood Assessment

Subnet: 20.151.255.0/24

• Abuse Density: 0.0
• Classification: Clean
• Total Siblings: 1
• Active Siblings: 1
• Threat Siblings: 0

The immediate neighborhood shows no elevated risk patterns, suggesting isolated reputation concerns rather than systemic subnet compromise.

Recommended Actions

Given the moderate risk score and DNSBL listings, the following firewall rules are recommended:

iptables:

```

iptables -A INPUT -s 20.151.255.144 -j DROP

```

nftables:

```

nft add rule inet filter input ip saddr 20.151.255.144 drop

```

nginx:

```

deny 20.151.255.144;

```

AWS WAF:

```json

{

"Addresses": ["20.151.255.144/32"],

"Description": "IPDebrief risk 50"

}

```

Intelligence Assessment

This IP represents Microsoft Azure infrastructure with documented blacklist presence. The moderate risk score (50) combined with 2 DNSBL listings suggests either:

1. Legitimate Microsoft infrastructure with false-positive blacklist entries

2. Potentially compromised Microsoft cloud resources

3. Misconfigured or abused Microsoft endpoint

Recommended SOC Actions:

• Monitor for traffic patterns inconsistent with Microsoft Azure usage
• Verify any observed connections against known Microsoft service endpoints
• Consider temporary blocking until blacklist status is verified
• Correlate with threat intelligence feeds for Microsoft Azure compromise campaigns

Confidence Level: Moderate - Cloud infrastructure nature requires contextual verification before definitive blocking decisions.

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