Detect bad IPS on your network and applications with this JSON REST API built with TypeScript and Hono, designed to run on Cloudflare Workers.

The primary purpose of this API is to detect bad IP addresses. It checks whether an IP address is associated with proxies, spammers, or abusers by querying various DNS-based blacklists (DNSBLs).

It Offers two search strategies: quick and full.

• Quick: Resolves as soon as it finds the IP address in any blacklist.
• Full: Searches in all configured blacklists before returning a result.

Demo: https://api.badip.info/103.183.106.19?strategy=full

1. Install dependencies:

   npm install

2. Run in development:

   npm run dev

You can make a GET request to the API by passing the IP address as a parameter. Here's an example using curl:

curl http://localhost:8787/123.11.22.33&strategy=full

• Replace http://localhost:8787 with the actual URL of your API.
• Specify the IP address you want to check.
• Use the strategy parameter to choose between "quick" or "full" search strategies.

The API will respond with a JSON object containing information about the the IP address:

{
  "success": true,
  "isBad": true,
  "blacklists": ["dnsbl.example.info"]
}

• success: A boolean indicating whether the request was successful.
• isBad: A boolean indicating whether the IP address is classified as "bad" or not.
• blacklists: List of DNSBLs where the ip is listed. Returns only 1 when using the quick strategy.

You can customize the DNSBLs to query by editing the config.ts file.

Note that Cloudflare Workers currently only supports 6 simultaneous requests, so the more DNSBLs you add, the longer it will take to search with the "full" strategy.

1. Deploy the API to Cloudflare Workers. Ensure you have the Cloudflare Workers configured with your Cloudflare account.

   npx wrangler publish

2. This may require authentication to your Cloudflare account. Once the API is deployed, you will receive a unique URL endpoint where the API is accessible.

This project is licensed under the MIT License. See the LICENSE file for details.

If you'd like to contribute to this project or report issues, please open an issue or submit a pull request on the GitHub repository.

Special thanks to the DNSBLs maintainers for their contributions to a better internet.