@iocium/rdap-lite

Lightweight RDAP client for domain and IP lookups with normalized JSON output, built-in caching, and a user-friendly CLI. Works seamlessly in Node.js, browsers, and serverless environments.

🚀 Blazingly fast lookups powered by automatic IANA bootstrap discovery and retry logic.

🔗 Explore full API docs at: https://iocium.github.io/rdap-lite

📌 Features

• 🔍 Normalized Results: Consistent JSON shape for domain & IP RDAP responses
• 🌐 IANA Bootstrap: Automatic discovery of RDAP endpoints (no manual URLs)
• ⏱️ Retries & Backoff: Automatic retry on HTTP 429 with exponential backoff
• ⚙️ Flexible Configuration: Custom headers, proxy support, timeouts, and cache
• 💾 Pluggable Caching: Default in-memory cache or custom implementations
• 🛠 Dual Interface: Promise-based API and standalone CLI

📦 Installation

npm install @iocium/rdap-lite
# or
yarn add @iocium/rdap-lite
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⚡️ CLI Usage

# Simple lookup
npx rdap-lite example.com

# JSON output
npx rdap-lite 8.8.8.8 --json
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For more options:

rdap-lite --help
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💻 Programmatic API

import { queryRDAP } from '@iocium/rdap-lite';

(async () => {
  try {
    const info = await queryRDAP('example.com', {
      timeout: 5000,
      headers: { 'User-Agent': 'my-app/1.0' },
      proxy: 'https://myproxy.local/',
    });
    console.log(info);
  } catch (err) {
    console.error('Error:', err);
  }
})();
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Configuration Options

Option	Type	Default	Description
headers	Record<string,string>	{…}	Custom HTTP headers
proxy	string	undefined	Proxy prefix URL for routing requests
timeout	number	10000	Request timeout in milliseconds
cache	RDAPCache	In-memory	Custom cache implementing .get() / .set()

The default in-memory cache retains results for 1 hour.

Cache Backends

You can use the default in-memory cache via the cache option (using memoryCache), or Workers KV and D1 backends with the built-in helpers:

import { queryRDAP, kvCache, d1Cache } from '@iocium/rdap-lite';

// Use KV namespace as cache
const result = await queryRDAP('example.com', {
  cache: kvCache(env.MY_KV_NAMESPACE),
});

// Use D1 database as cache
const result2 = await queryRDAP('example.com', {
  cache: d1Cache(env.DB),
});
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🌍 Environment Compatibility

• Node.js (v14+)
• Browsers (bundlers supporting Fetch & AbortController)
• Cloudflare Workers & other serverless platforms

🖥️ Browser Build

We provide a standalone IIFE bundle for direct use in browsers (no bundler required):

<script src="dist/browser/index.global.js"></script>
<script>
  rdapLite.queryRDAP('example.com').then(console.log);
</script>
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📚 Documentation

Explore the full API reference generated via TypeDoc:

▶️ View Documentation

📄 License

MIT