A free API to query 3.5B subdomains logo

A free API to query 3.5B subdomains

The world's largest subdomain enumeration API. Query 3.5 billion subdomains instantly with a simple GET request. Free tier available. Built for security researchers, red teams, and bug bounty hunters.

Share on:
Listing image

The world's largest subdomain enumeration API. Query 3.5 billion subdomains instantly with a simple GET request. Free tier available. Built for security researchers, red teams, and bug bounty hunters.

Subdomain Finder API — Query 3.5 Billion Subdomains | Jsmon subdomains by Jsmon Features Pricing API Docs Login Get API Key Query 3.5 Billion Subdomains. Instantly. The world's largest subdomain intelligence API. One GET request. Every subdomain ever observed. Get Free API Key View API Docs terminal $ curl https://subdomains.jsmon.sh/api/domain/tesla.com \ -H 'Api-Key: YOUR_API_KEY' { "domain" : "tesla.com" , "total" : 4521 , "subdomains" : [ "mail.tesla.com" , "api.tesla.com" , "vpn.tesla.com" , ... ] } Used

Related listings

Passwords hidden in a photo, sealed to your TPM/SE

I graded 200 AI tools/apps and track any changes in their policies

finds first users for a product you've shipped

A Two-Week AI Migration Experiment

Free MCP Hosting and Cloud Platform for MCP Servers

Local-first, privacy-focused Android utilities