index.html

---
title: "RDAP Lookup - a private domain name lookup tool"
layout: page
stylesheets:
  - ./assets/style.css?v=2025101314
scripts:
  - ./assets/ipaddr.js/ipaddr.min.js?v=2025031715
  - ./assets/punycode.js/punycode.js?v=2025031715
  - ./assets/client.js?v=2025031715
---

<form onsubmit="doQuery();return false" class="form-inline">
  <div class="col" style="padding:0">
    <div class="input-group">

      <div class="input-group-prepend">
        <select class="form-select" id="type" name="type" onchange="updatePlaceHolder(this.options[this.selectedIndex].value)">
          <option value="domain" selected>Domain</option>
          <option value="tld">TLD</option>
          <option value="ip">IP/CIDR</option>
          <option value="autnum">AS Number</option>
          <option value="entity">Entity</option>
          <option value="registrar">Registrar</option>
          <option value="url">URL</option>
          <option value="json">JSON</option>
        </select>
      </div>

      <input class="form-control" id="object" type="text" name="object" placeholder="example.com" onkeyup="guessType(this.value)" required>

      <div class="input-group-append">
        <input id="button" type="button" value="Submit" onclick="doQuery()" class="btn btn-primary" disabled>
      </div>
    </div>
  </div>
</form>

<div class="container" style="padding:0;font-size:small;font-style:italic;color:#aaa">
  <div class="col" style="padding:0.75em 0 0.25em 0">
    <label for="follow-referral">
      <input name="follow-referral" id="follow-referral" type="checkbox" checked>
      <span style="border-bottom: 1px dashed silver;" title="this is now the default behaviour, as of 2025-08-13">Follow referral to registrar's RDAP record</span>
    </label>
  </div>
</div>

<output id="output-div"></output>

<p>This page implements a <em>completely private</em> lookup tool for domain names, IP addresses and Autonomous System Numbers (ASNs). Only the relevant registry sees your query: your browser will directly connect to the registry's RDAP server using an encrypted HTTPS connection to protect the confidentiality of your query. If the "Follow referral to registrar's RDAP record" checkbox is checked, then the sponsoring registrar may also see your query (if the registry provides a referral).</p>

<ul>
  <li><a href="https://about.rdap.org" target="_new">Read about RDAP</a> and how it differs from traditional Whois.</li>
  <li>All generic TLDs now support RDAP, but only a <a href="https://deployment.rdap.org" target="_new">few ccTLDs have deployed RDAP</a> so far.</li>
  <li>There is (currently) no bootstrap registry for ICANN-accredited registrars; instead these queries are sent to <a href="https://about.rdap.org/#additional" target="_new">the registrars.rdap.org server.</a>.</li>
  <li>You can <a href="mailto:feedback@rdap.org">submit feedback about RDAP</a>. Please contact the relevant registry or registrar if you have an issue with the content of an RDAP response.</li>
  <li>Found a problem with an RDAP response? You can use the <a href="https://validator.rdap.org">RDAP Validator</a> to check for issues.</li>
  <li>This tool is Free Software; see the <a href="LICENSE">license</a>. You can fork a copy of the <a rel="noopener" target="_new" href="https://github.com/rdap-org/client.rdap.org">git repository</a>.</li>
  <li>This page uses <a rel="noopener" target="_new" href="https://github.com/whitequark/ipaddr.js/">ipaddr.js</a> by <a rel="noopener" target="_new" href="https://whitequark.org/">whitequark</a>, and <a rel="noopener" target="_new" href="https://github.com/mathiasbynens/punycode.js">punycode.js</a> by <a rel="noopener" target="_new" href="https://mathiasbynens.be/">Mathias Bynens</a>.</li>
</ul>

<script>
  loadRegistries();

  if ("client.rdap.org" == document.location.hostname.toLowerCase()) {
    document.body.appendChild(document.createElement("script")).setAttribute("src", "//analytics.tau.uk.com");
  }
</script>