RDAP Lookup (Next.js App Router + shadcn/ui)

A production-level RDAP Lookup tool built using Next.js App Router, Tailwind CSS, and shadcn/ui components.
It queries rdap.org for the given object and, if that fails (for domains), automatically falls back to rdap.iana.org. This application enforces rate limiting (100 queries/IP, 15-second interval), returns user-friendly errors, and displays structured RDAP data by default, with a toggle to show raw JSON.

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Why RDAP Instead of WHOIS?

RDAP (Registration Data Access Protocol) is the modern, standardized replacement for the legacy WHOIS protocol. It provides:

1. Structured Responses: JSON output that is easier to parse.
2. Internationalization: Better support for IDNs and non-ASCII data.
3. Security & Access Control: Designed to meet modern privacy requirements.
4. RESTful / Web-Friendly: Utilizes HTTPS endpoints, making integration simpler than raw WHOIS text.

Overall, RDAP is more robust and future-proof for domain/IP registration data than WHOIS.

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Features

• Next.js 13 App Router
• shadcn/ui for modern UI components
• Tailwind CSS for styling
• Rate limiting: 100 queries/IP & 15-second interval
• Fallback for domains**: rdap.iana.org/domain/<domain> if primary lookup fails
• Structured result display + raw JSON toggle button
• User-friendly error messages

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Getting Started

1. Clone or Download this repository:

   git clone https://github.com/alokemajumder/rdap-lookup.git cd rdap-lookup

2. Install Dependencies:

   npm install

   or

   yarn

3. Run in Development:

   npm run dev

   By default, the app runs at http://localhost:3000.

4. Build for Production:

   npm run build npm run start

   By default, runs at http://localhost:3000.

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Usage

1. Select the RDAP type (domain, IP, ASN, or entity).
2. Enter the object (e.g., google.com or 8.8.8.8).
3. Click Lookup.
   • If rdap.org fails and it's a domain, fallback queries rdap.iana.org/domain/.
4. By default, you see a structured representation of key RDAP fields (object class, handle, LDH name, etc.).
5. Click Show JSON to toggle the raw JSON output.

Rate Limiting

• 100 queries maximum per IP address.
• 15 seconds minimum interval between consecutive queries.
• Exceeding these results in a 429 (Too Many Requests) error.

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Contributing

1. Fork or Clone the repository.
2. Create a new feature branch (e.g., feature/improve-structured-output).
3. Commit and Push your changes.
4. Open a Pull Request explaining what you’ve changed and why.

We welcome enhancements for deeper RDAP parsing, improved UI, or integration with a persistent rate-limiting store (e.g., Redis).

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Live Website

RDAP Lookup

License

This project is licensed under the MIT License.

You’re free to fork, modify, and redistribute under the terms of the MIT license.
We appreciate contributions and feedback!