Threat Investigation

ci3.googleusercontent.com

Trusted High Traffic Tranco #31

ci3.googleusercontent.com operates primarily as a CDN & edge service, focusing on user content sandbox. The security-focused domain used by Google to serve user-generated content (images, attachments, Drive files) and utility pages (Google Translate, Web Cache). By hosting untrusted user content on a separate domain from the main google.com session cookies, Google mitigates security risks like Cross-Site Scripting (XSS). It is operated by Google LLC, a subsidiary of Alphabet Inc..

sandbox environmentcontent deliverygoogle drivesecurity infrastructure
Network Infrastructure

Historical and current IP address mappings for this domain.

Community Intelligence

Real experiences from people who visited this domain

Recent Threat Analysis

URLert analyzed recent scan activity for ci3.googleusercontent.com and found 5 results.

Security Considerations

While ci3.googleusercontent.com is an established platform, these capabilities require extra vigilance.

File Hosting

ci3.googleusercontent.com allows users to upload and share files. Any file you download was uploaded by another user—not the platform operator. Scan downloads with antivirus software and only download from sources you trust.

Document Hosting

ci3.googleusercontent.com hosts documents and pages shared via links. Because the domain is trusted, links pass through email spam filters easily. Attackers exploit this to host fake invoices, login pages, or malware download prompts.

Remember: The platform itself is established, but even established platforms can be abused.

Developer API

Integrate Domain Intelligence

Access this classification data programmatically via our API.

GET /api/v1/classify?domain=ci3.googleusercontent.com
{
  "domain": "googleusercontent.com",
  "confidence": "high",
  "category": {
    "purpose": "cdn_edge",
    "specialization": "User Content Sandbox"
  },
  "identity": {
    "headline": "Sandboxed delivery domain for user content on Google services",
    "summary": "The security-focused domain used by Google to serve user-generated content (images, attachments, Drive files) and utility pages (Google Translate, Web Cache). By hosting untrusted user content on a separate domain from the main google.com session cookies, Google mitigates security risks like Cross-Site Scripting (XSS).",
    "operator": "Google LLC",
    "parent_entity": "Alphabet Inc.",
    "topics": [
      "sandbox environment",
      "content delivery",
      "google drive",
      "security infrastructure",
      "xss prevention"
    ]
  },
  "functions": {
    "is_ugc_platform": false,
    "is_file_host": true,
    "is_url_shortener": false,
    "is_public_idp": false,
    "is_crypto_platform": false,
    "allows_user_subdomains": false,
    "is_form_builder": false,
    "is_document_host": true
  },
  "facts": {
    "registered_date": "2008-11-17T00:00:00Z",
    "rank": 31,
    "hosting_provider": "GOOGLE - Google LLC"
  }
}

Hosting

GOOGLE - Google LLC

Registered

Nov 17, 2008

Last Updated

Jan 8, 2026

Domain data sourced from WHOIS, Tranco rankings, and URLert's classification engine.