20.83.40.172📋 Copy

# IP Intelligence Briefing: 20.83.40.172/32

Classification: Moderate Risk

Date: 2026-06-26

Prepared For: SOC Analyst Team

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## Executive Summary

IP address 20.83.40.172 is an Azure infrastructure address belonging to Microsoft Corporation (ASN 8075). The IP demonstrates a moderate risk score of 40/100 with evidence of DNS blacklist associations. While geolocated to Microsoft Azure infrastructure in Des Moines, IA, the IP shows historical blacklist activity requiring monitoring. No active threat indicators or known campaign associations were detected.

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## Ownership and Infrastructure Profile

The IP resolves to Microsoft Azure infrastructure with the hostname azpdcgn9z5qf.stretchoid.com. Infrastructure classification confirms cloud compute role with firewalled/no services posture.

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## Risk Assessment

The moderate risk score correlates with historical DNS blacklist activity. The IP appears on 2 out of 8 reputation lists with maximum severity ratings of "high." No persistent malicious behavior detected.

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## Historical Observation Analysis

Observation Count: 21 signals tracked

Key Historical Signals:

• 2026-06-26: Minimal threat indicators, operator score 0
• 2026-06-19: Basic DNSSEC/caa operator score 0.3478
• 2026-06-14: Geolocation inference confirmed Des Moines, IA

The IP shows stable infrastructure patterns with no significant risk escalation trends. Ownership changes remain at zero, indicating consistent Azure infrastructure assignment.

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## Network Relationships

Primary Associations:

• MSFT network relationships (multiple instances)
• DNS Association: azpdcgn9z5qf.stretchoid.com
• Microsoft Azure infrastructure network

Control Plane:

• Route Stability: Unstable (isRouteStable: false)
• BGP Prefix: 20.64.0.0/10
• Origin ASN: 8075
• RPKI State: Not available
• DNSSEC Valid: Yes

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## Neighborhood Analysis

Subnet: 20.83.40.172/24

The /24 subnet demonstrates low abuse density with mostly clean classification. Single threat sibling detected within the subnet range.

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## Recommended Security Actions

Risk Score: 40

Recommendation Level: Monitor/Block Based on Policy

Firewall Rules Generated:

```bash

# iptables

iptables -A INPUT -s 20.83.40.172 -j DROP

# nftables

nft add rule inet filter input ip saddr 20.83.40.172 drop

# nginx

deny 20.83.40.172;

# pfSense

20.83.40.172/32

# Cloudflare WAF

Block 20.83.40.172 — IPDebrief risk score 40

filter: ip.src eq 20.83.40.172

# AWS WAF

Addresses: ["20.83.40.172/32"]

Description: IPDebrief risk 40

```

Note: These recommendations are probabilistic and should be combined with other signals before taking action.

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## Intelligence Assessment

The IP 20.83.40.172 represents Microsoft Azure infrastructure with a moderate risk profile driven primarily by DNS blacklist associations rather than active malicious behavior. While the IP shows evidence of being listed on 2 reputation lists, the overall neighborhood remains mostly clean with low abuse density.

SOC Action: Monitor for escalation. Consider blocking if the IP originates traffic in contexts inconsistent with legitimate Azure service patterns. The moderate risk score warrants policy-based review rather than immediate blocking without additional correlation.

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