Classroom50.org Scam Check: Blacklist Warning

October 8, 2026 at 7:55 AM

Suspicious Website

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Checked by Website Reputation Checker

Table of Contents

Danger Zone

Risky Territory

Caution Advised

Trusted but Verify

Safe & Secure

Classroom50 → Safety Check

First checked August 6, 2026 at 9:05 PM

Website content and technical signals analyzed

Method: automated checks.

Suspicious Website Gridinsoft currently classifies this site as Suspicious Website. The report highlights 3 blacklist detections, a very young domain (4 months), and no established public user-review history.

Figure 1. Trust signal radar for classroom50.org. Larger shaded area indicates stronger trust signals.

How we scored classroom50.org

On-page mentions:

Programming

Tech signals:

GitHub Profile

Negative signals:

security-provider warnings
multiple malware or phishing blacklist detections (4)
limited independent reputation data
a relatively new domain (4 months)

Positive signals:

a verified profile linked to this domainGitHub
an active SSL certificate (3 months)

33 /100

Trust Score

4 months

Domain Age

Location

External provider warnings

Last checked October 8, 2026 at 7:55 AM by Gridinsoft Trust Model v2.5.7

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What is Classroom50?

According to its current page title, classroom50.org presents itself as “Sign in · Classroom 50”. The sections below evaluate the site-specific reputation and technical findings.

This domain was registered May 26, 2026 at 7:49 PM through the company NameCheap, Inc. and ownership information is not publicly available.

For complaint

Is classroom50.org safe?

Use caution with classroom50.org. Its current Gridinsoft trust score is 33/100; review the site-specific findings below before use.

Why is classroom50.org marked "Suspicious Website"?

Gridinsoft's current assessment of classroom50.org is based on the domain-specific reputation, content, and technical signals listed in the report. Context considered alongside those findings includes a short domain history (4 months old). The listed status means the domain currently appears in Gridinsoft's own Threat List; it is not a consensus of external providers. 3 of 26 publicly displayed security sources report a warning.

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Registration Form

Automated page analysis detected form or data-entry functionality on classroom50.org. Forms can involve user-submitted information, so verify ownership and privacy terms before entering data.

Programming

Social Media Links

The presence of social media links on the website indicates that it references social media accounts. This signal alone does not confirm ownership or authenticity of those profiles.

GitHub Profile

classroom50.org links to a GitHub profile or public repository associated with the project. This is a useful transparency signal, especially when the account has public activity.

Listed by Gridinsoft

Gridinsoft Internet Security classified this site as unsafe. As a VirusTotal partner, our detections contribute to broader protection across tools and browsers.

Young Domain

This site was registered recently, which limits historical reputation data and long-term trust signals.

External provider warnings: 3/26 Suspicious Website

This section shows what independent external security sources say about this site.

A warning appears when one or more sources report malware, phishing, abuse, or other safety concerns. Each row shows the source and its verdict.

If no source reports a warning, the site is shown as clear in this section.

CRDF

Malicious

G-Data

Phishing

Kaspersky

Phishing

External provider results for Classroom50.org, last checked August 6, 2026. — VirusTotal

Domain Information

Created May 26, 2026 at 7:49 PM Updated: August 12, 2026 at 3:38 AM · Expires: May 26, 2027 at 7:49 PM

Domain Age 4 months Recently Registered

Registrar NameCheap, Inc. IANA ID: 1068

Abuse Email [email protected]

Domain Status Client Transfer Prohibited DNSSEC: UNSIGNED

Top Level Domain .org Generic TLD

Technical Details

IP Address 185.199.111.153

Hostname cdn-185-199-111-153.github.com

Hosting Provider AS54113 Fastly, Inc. San Francisco, California, US

SSL Certificate YR2 TLSv1.3 · Valid for: 3 months · from August 30, 2026 at 10:16 PM · to November 28, 2026 at 10:16 PM

Name Servers dns1.registrar-servers.com
dns2.registrar-servers.com

Content from the analyzed website

Quoted for security analysis. These statements belong to the source website and are not endorsed by Gridinsoft.

Original page title Sign in · Classroom 50

Original description The free, open-source alternative to GitHub Classroom. Distribute and auto-grade programming assignments on GitHub.

Primary Language

Profile

The Fifty Foundation · foundation50 · 219 followers · 5 repos · 8 months

Mentioned hosts (5)

fonts.gstatic.com classroom50.org fifty.foundation github.com fonts.googleapis.com

How to block Classroom50.org?

Our Anti-Malware can automatically block access to classroom50.org if it is flagged as malicious.

Install and run the protection.
The program will block flagged domains and remove related threats.

Exclusion

If you believe classroom50.org is safe, you can add it to the exclusion list:

Open Gridinsoft Anti-Malware → Tools → Ignore List.
Go to the Internet tab and add classroom50.org.

See detailed instructions for more options.

Are You the Owner?

If you own Classroom50.org and want to challenge the trust score, please submit a review request via portal.gridinsoft.com. There you can claim your profile and add verified company/contact details. If you cannot access the portal, email legal(at)gridinsoft.com with proof of legitimacy and contact details. We never charge website owners for reviews or reconsideration requests. For more information, please review our Disclaimer.

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Your score for classroom50.org

5 4 3 2 1

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