172.71.150.21📋 Copy

# IP Intelligence Briefing: 172.71.150.21/32

Classification: Cloudflare CDN Infrastructure

Risk Assessment: LOW (Score: 25/100)

Report Date: 2026-08-06

## Executive Summary

IP 172.71.150.21 is a Cloudflare CDN infrastructure endpoint operating within the CLOUDFLARENET autonomous system (ASN 13335). The IP demonstrates low-risk characteristics consistent with legitimate content delivery infrastructure, with no active threat indicators or malicious behavior observed.

## Ownership and Infrastructure

• Organization: Cloudflare, Inc.
• Autonomous System: ASN 13335 (CLOUDFLARENET)
• Network Block: 172.64.0.0/13
• Geolocation: Seattle, WA, United States (US)
• Infrastructure Type: CDN
• Registration: ARIN (allocated 2015-02-25)

## Threat Indicators

• Risk Score: 25 (Low Risk)
• Abuse Confidence: Not applicable (CDN infrastructure)
• Blacklist Status: Listed on 1 of 8 DNSBL feeds
• Threat Classifications:

- Not a known attacker

- Not a spam source

- Not a Tor exit node

- Not identified as VPN/proxy infrastructure

• Known Campaigns: None detected
• Cert Matches: 0

## Network Behavior

• Open Ports: None detected (services firewalled)
• DNS Resolution: Forward resolution confirmed
• DNSSEC Validation: Valid
• Certificate Status: No TLS certificates exposed
• HTTP Services: No active web services detected

## Neighborhood Analysis

Subnet: 172.71.150.0/24

Abuse Density: 0.5 (low)

Neighbor Count: 2 total IPs in /24

Risk Distribution: 1 Low, 0 Medium, 0 High

## Observation History

Total Observations: 13 signals over monitoring period

Most Recent Activity: 2026-08-06

Key historical signals:

• DNSSEC validation confirmed (confidence: 0.90)
• ASN attribution: CLOUDFLARENET (confidence: 0.85)
• Subnet abuse density: 0.5 (confidence: 0.40)
• DNSBL listing detected with high severity classification

Persistence Indicators:

• Threat persistence days: 0
• Ownership changes: 0
• Persistently malicious: No

## Recommendations for SOC Analysts

1. Allow Traffic: This IP represents legitimate Cloudflare CDN infrastructure. No blocking required.

2. Monitor DNSBL: Review the single DNSBL listing to determine if it represents a false positive or legitimate filtering.

3. Correlation: Related IP 172.71.150.204 also operates within the same risk profile (score: 25) and can be treated with equivalent confidence.

4. Log Review: No suspicious activity patterns detected; standard CDN traffic logging applies.

## Intelligence Conclusion

IP 172.71.150.21 operates as legitimate Cloudflare CDN infrastructure with no evidence of malicious activity. The low risk score, CDN classification, and absence of threat indicators support classification as benign infrastructure. SOC teams may treat this IP as trusted with standard monitoring practices.

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*Data Source: IPDebrief Intelligence Platform*

*Analysis Generated: 2026-08-06*

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