leetcode.com
Category: Education, Information Technology
Description of leetcode.com
Leetcode.com appears to be the official website for LeetCode, an online learning and coding-practice platform focused on programming skills, algorithm challenges, and technical interview preparation. The homepage screenshot highlights features such as guided learning, exploration tools, developer-oriented content, and premium access, which aligns with its reputation as a resource for software engineering practice.
Based on the domain name, visible branding, and web-classification data, the site appears to operate in the education and information technology space. It is likely used by students, job seekers, and software developers who want to improve coding proficiency and prepare for technical assessments and interviews.
Safety Assessment for leetcode.com
The available scan results are strongly reassuring for this domain at the time of this scan. It was not flagged by any of 91 security engines, the malware scan reported no flagged files, and the checked threat-database and blacklist sources did not indicate known phishing or malware-related issues. The domain is also long-established, with an age of roughly 16 years, which generally reduces the likelihood of it being a throwaway or short-lived abusive site.
Additional context also supports a lower-risk assessment: the site has a substantial traffic presence, consistent educational and technical categorization across multiple web-classification providers, and a professional-looking homepage that matches the LeetCode brand and service offering. No suspicious external links, referenced domains, or iframes were identified in the provided scan data.
Based on available data, no threats were detected at the time of this scan.
Technical Description
The domain is using a valid SSL/TLS certificate issued by a mainstream certificate authority, with expiry listed as 2026-09-11. It is served through Cloudflare infrastructure, with Cloudflare nameservers and a Cloudflare-hosted web server IP in the provided results. DNSSEC appears to be enabled and signed, which may help protect against certain DNS-manipulation risks.
From a technical standpoint, the visible setup appears modern and professionally maintained. No immediate security concerns were indicated in the provided scan results, although the exact supported TLS protocol versions were not specified in the data.
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