A comprehensive, real-time API for detecting malicious domains. Trusted by developers worldwide to block phishing, malware, and abuse.
Global CDN ensures sub-50ms response times worldwide. Built on Cloudflare Workers for maximum performance.
Continuous automated validation with real-time DNS monitoring ensures our database stays current and accurate.
Advanced threat intelligence feeds and multi-source validation reduces false positives to near zero.
JSON, TXT, YAML, hosts file - get your data in the format that works best for your application.
No logging of queries or domain lookups. Your users' privacy is our priority.
No API keys, no hidden costs, generous rate limits. Use it however you need, forever.
Try our API right here in your browser. Enter any domain to see instant results.
// Enter a domain above to see the API responseOne domain per line, perfect for scripts and simple integrations.
Download TXT Loading...GET /api/v1/example.com
Check if a specific domain is marked as malicious.
{"success": true, "isMalicious": false}
Simple JSON response with boolean isMalicious flag.
GET /list.json
Download the complete domain list in JSON format.
Malicious domains include those used for phishing, malware distribution, command and control (C2) servers, spam, and other abusive activities. We aggregate data from multiple threat intelligence sources and validate through DNS checks.
Our database is updated continuously from multiple sources and validated through DNS checks. Domains are automatically re-validated periodically to ensure accuracy as malicious infrastructure changes.
If you believe your domain has been incorrectly flagged, please report it and we'll investigate within 24-48 hours.
Yes! We provide a hosts file format at /hosts that you can download and use
with your operating system's hosts file to block malicious domains at the network level.
Domains are prefixed with 0.0.0.0 for blocking.
Our API is designed to be free and open with generous rate limits. For most use cases, you won't hit any limits. If you need higher throughput, consider downloading the list and checking locally.
We welcome contributions! You can submit new malicious domains through our issue tracker. The project is open source and contributions are appreciated.