Threat Investigation

comcast.net

High Traffic Tranco #236

comcast.net operates primarily as a email service, focusing on isp email and infrastructure. Comcast.net is the infrastructure domain for Comcast's residential internet services (branded as Xfinity). While the root domain redirects to xfinity.com, it remains the host for millions of consumer email addresses and provides the 'TV Everywhere' authentication (Identity Provider) allowing subscribers to log into third-party streaming apps. It is operated by Comcast, a subsidiary of Comcast Corporation.

emailispxfinityauthentication
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 comcast.net

No public scans recorded recently

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Security Considerations

While comcast.net is an established platform, these capabilities require extra vigilance.

Identity Provider

comcast.net provides "Sign in with..." authentication for third-party websites. Attackers create fake login pages that look identical to the real one. Always check the URL bar shows the exact correct domain before entering your password.

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

Something wrong?
• Domain owner?
Developer API

Integrate Domain Intelligence

Access this classification data programmatically via our API.

GET /api/v1/classify?domain=comcast.net
{
  "domain": "comcast.net",
  "confidence": "high",
  "category": {
    "purpose": "email_service",
    "specialization": "ISP email and infrastructure"
  },
  "identity": {
    "headline": "Legacy ISP domain for Comcast email and authentication",
    "summary": "Comcast.net is the infrastructure domain for Comcast's residential internet services (branded as Xfinity). While the root domain redirects to xfinity.com, it remains the host for millions of consumer email addresses and provides the 'TV Everywhere' authentication (Identity Provider) allowing subscribers to log into third-party streaming apps.",
    "operator": "Comcast",
    "parent_entity": "Comcast Corporation",
    "topics": [
      "email",
      "isp",
      "xfinity",
      "authentication",
      "internet"
    ]
  },
  "functions": {
    "is_ugc_platform": false,
    "is_file_host": false,
    "is_url_shortener": false,
    "is_public_idp": true,
    "is_crypto_platform": false,
    "allows_user_subdomains": false,
    "is_form_builder": false,
    "is_document_host": false
  },
  "facts": {
    "registered_date": "1997-09-25T00:00:00Z",
    "rank": 236,
    "hosting_provider": "COMCAST-7922 - Comcast Cable Communications, LLC"
  }
}
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Hosting

COMCAST-7922 - Comcast Cable Communications, LLC

Registered

Sep 25, 1997

Last Updated

Jan 16, 2026

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