136.66.53.153📋 Copy

# IP Intelligence Briefing: 136.66.53.153/32

Classification: Low Risk - Google Cloud Infrastructure

Date: 2026-08-12

Analyst: IPDebrief Intelligence

## Executive Summary

IP 136.66.53.153 is a low-risk cloud compute endpoint hosted on Google Cloud infrastructure within the GOOGL-2 network block (136.64.0.0/11). The IP demonstrates minimal threat indicators and correlates with legitimate Google services. No immediate blocking actions recommended.

## Technical Profile

Ownership & Registration:

• ASN: 396982
• Organization: Google LLC
• Network: GOOGL-2
• CIDR Range: 136.64.0.0/11
• RIR: ARIN

Geolocation:

• Country: United States (US)
• Region: Oregon (OR)
• City: The Dalles
• Timezone: America/Los_Angeles

Network Classification:

• Type: Cloud Compute (Google Cloud)
• Hosting Provider: Yes
• Anycast: No
• Proxy/VPN/Tor: No

## Service & Port Analysis

• Open Ports: TCP/22 (SSH)
• SSH Banner: SSH-2.0-OpenSSH_9.2p1 Debian-2+deb12u10
• Reverse DNS: 153.53.66.136.bc.googleusercontent.com
• Forward Resolution: Confirmed to 153.53.66.136.bc.googleusercontent.com
• Domain Association: googleusercontent.com

Email Authentication:

• SPF Record: Present
• DMARC Record: Present

## Threat Intelligence

Risk Assessment:

• Overall Risk Score: 0
• Provider Score: 0
• Authority Score: 0
• Abuse Confidence: Not applicable
• Blacklist Count: 0

Threat Indicators:

• Known Attacker: No
• Spam Source: No
• Tor Exit Node: No
• Campaign Correlation: None
• Known Campaigns: None

## Historical Observations

The IP has been observed across 22 signal observations. Recent observations (2026-08-12) show stable DNSSEC and CAA records with an operator score of 0.3478 (Basic classification). No escalation in threat signals observed over the observation period.

## Neighborhood Analysis

• Subnet: 136.66.53.153/24
• Abuse Density: 1 (mostly_clean classification)
• Inherited Risk: 2
• Total Siblings: 1
• Active Siblings: 1
• Threat Siblings: 1

## Relationship Graph

The IP maintains DNS associations with 153.53.66.136.bc.googleusercontent.com and network associations with GOOGL-2. No anomalous relationships detected.

## Recommended Actions

No blocking actions recommended. The IP demonstrates legitimate Google Cloud infrastructure characteristics with:

• Valid reverse DNS resolution
• Proper email authentication (SPF/DMARC)
• No threat feed matches
• Standard Google Cloud SSH banner

Monitoring: Continue standard monitoring. The IP exhibits normal cloud compute behavior with no deviation from expected Google infrastructure patterns.

## Conclusion

IP 136.66.53.153 represents legitimate Google Cloud infrastructure with no indicators of malicious activity. The endpoint shows proper DNS configuration, valid email authentication records, and standard SSH service exposure consistent with cloud hosting. No firewall rules required.

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