Free and open subdomain intelligence

Anubis DB

A public API for collecting and retrieving known subdomains by root domain. It is built for security tooling, recon workflows, and open contributions from the wider Anubis ecosystem.

View API Open on GitHub

fetch("https://anubisdb.com/subdomains/reddit.com")
  .then((response) => response.json())
  .then((subdomains) => {
    console.log(subdomains);
  });

What it does

Anubis DB fills the gap for a simple, free, open API dedicated to subdomain enumeration data. Query a domain to retrieve known subdomains, or submit valid findings so the database gets better for everyone.

Lookup

Retrieve known subdomains

Use a GET request to fetch the current stored list for a valid root domain.

Contribute

Submit discoveries

Use a POST request to add cleaned, validated subdomains for a domain.

Edge native

Powered by Workers and D1

The service runs on Cloudflare Workers with D1 for lightweight global access.

API

There is one resource: /subdomains/:domain. Responses are JSON, and the legacy /anubis/subdomains/:domain path is also supported.

GET https://anubisdb.com/subdomains/:domain

POST https://anubisdb.com/subdomains/:domain

await fetch("https://anubisdb.com/subdomains/reddit.com", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    subdomains: ["www.reddit.com", "old.reddit.com"]
  })
});

Open source and ready for contributions.

Review the Worker, D1 migrations, and import tooling on GitHub, or use Anubis to feed new discoveries into the database.

View repository