136.37.226.173📋 Copy

# IP Intelligence Briefing: 136.37.226.173

## Executive Summary

IP 136.37.226.173 is a low-risk infrastructure address belonging to Google Fiber Inc. (ASN 16591). The address shows legitimate cloud computing characteristics with no active threat indicators, no open services, and a clean subnet environment. Recommended action: No blocking required.

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## Technical Profile

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## Threat Assessment

Risk Level: LOW

The IP exhibits no malicious indicators:

• Threat Indicators: None detected
• Blacklist Status: 0 blacklist hits
• Known Attacker: False
• Spam Source: False
• Tor Exit: False
• Abuse Confidence Score: Not applicable

Control Plane Analysis:

• DNSBL Listed: 1 of 8 total lists
• Operator Risk Score: 0.2174 (Minimal)
• Route Stability: False
• DNSSEC Validated: Yes
• CAA Record: Present
• RPKI State: Not evaluated

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## Network Behavior

Service State: Firewall configuration prevents service enumeration (no open ports detected). This is typical for carrier-grade infrastructure.

DNS Configuration:

• PTR Record: 136-37-226-173.googlefiber.net
• Forward Resolution: 1 hostname
• SPF Record: Present
• DMARC Record: Not configured

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## Temporal Analysis

Observation History: 16 signals recorded across geolocation, network classification, and subnet abuse density. No persistent malicious behavior detected. Most recent observation timestamped 2026-07-23.

Subnet Environment (136.37.226.0/24):

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

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## Intelligence Relationships

Network Associations: Multiple references to network GFIBER-V4 confirm carrier infrastructure classification.

DNS Associations: Single hostname pattern (136-37-226-173.googlefiber.net) indicates standard reverse DNS delegation.

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## Recommended Actions

Firewall/Security Policy: No action required. Allow traffic based on organizational policy for Google Fiber IP ranges.

Monitoring: Standard logging recommended. No special alerting thresholds needed given low risk profile.

Investigation Priority: Low - No active threat indicators or malicious activity observed.

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## Conclusion

IP 136.37.226.173 represents legitimate Google Fiber infrastructure. The low risk score (25), clean subnet classification, absence of threat indicators, and carrier-grade hosting profile indicate this is benign network infrastructure. No blocking or mitigation measures recommended.

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