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tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Custom Domains</h1></header><h2 class="anchor anchorWithStickyNavbar_LWe7" id="overview">Overview<a href="#overview" class="hash-link" aria-label="Direct link to Overview" title="Direct link to Overview"></a></h2>
<p><a href="https://myzrok.io" target="_blank" rel="noopener noreferrer">myzrok.io</a> is a hosted zrok-as-a-service offering that provides a way for you bring a custom DNS name for zrok shares.
For example, let&#x27;s say you own the domain <code>foo.example.io</code>, you can leverage zrok custom domains to
create ephemeral shares such as: <code>https://vw8jbg4ijz5g.foo.example.io</code>
or <a href="/docs/concepts/sharing-reserved/">reserved shares</a> such as <code>https://toaster.foo.example.io</code>.</p>
<p>Custom domains require a Pro subscription with <a href="https://myzrok.io" target="_blank" rel="noopener noreferrer">myzrok.io</a>.
If you don&#x27;t already have an account, you can sign up for one <a href="https://myzrok.io" target="_blank" rel="noopener noreferrer">here</a>.</p>
<p><a href="https://myzrok.io" target="_blank" rel="noopener noreferrer">myzrok.io</a> provides a guided setup with just a few easy steps!</p>
<ol>
<li>Bring your own custom domain name</li>
<li>Create DNS records for certificate validation and traffic routing</li>
<li>Wait for zrok to validate your records and finalize configuration</li>
<li>Start sharing!</li>
</ol>
<p>Detailed setup instructions are documented below.</p>
<h3 class="anchor anchorWithStickyNavbar_LWe7" id="prerequisites">Prerequisites<a href="#prerequisites" class="hash-link" aria-label="Direct link to Prerequisites" title="Direct link to Prerequisites"></a></h3>
<div class="theme-admonition theme-admonition-note admonition_xJq3 alert alert--secondary"><div class="admonitionHeading_Gvgb"><span class="admonitionIcon_Rf37"><svg viewBox="0 0 14 16"><path fill-rule="evenodd" d="M6.3 5.69a.942.942 0 0 1-.28-.7c0-.28.09-.52.28-.7.19-.18.42-.28.7-.28.28 0 .52.09.7.28.18.19.28.42.28.7 0 .28-.09.52-.28.7a1 1 0 0 1-.7.3c-.28 0-.52-.11-.7-.3zM8 7.99c-.02-.25-.11-.48-.31-.69-.2-.19-.42-.3-.69-.31H6c-.27.02-.48.13-.69.31-.2.2-.3.44-.31.69h1v3c.02.27.11.5.31.69.2.2.42.31.69.31h1c.27 0 .48-.11.69-.31.2-.19.3-.42.31-.69H8V7.98v.01zM7 2.3c-3.14 0-5.7 2.54-5.7 5.68 0 3.14 2.56 5.7 5.7 5.7s5.7-2.55 5.7-5.7c0-3.15-2.56-5.69-5.7-5.69v.01zM7 .98c3.86 0 7 3.14 7 7s-3.14 7-7 7-7-3.12-7-7 3.14-7 7-7z"></path></svg></span>note</div><div class="admonitionContent_BuS1"><p>In order to create a custom domain in zrok, <strong>you must already own the domain you want to use.</strong></p></div></div>
<p>During the setup process you will need to create DNS records to validate ownership and to allow a certificate to be issued
on behalf of your domain. Once you have your domain registered, you can begin the process of setting up your custom
domain with zrok.</p>
<h3 class="anchor anchorWithStickyNavbar_LWe7" id="create-your-custom-domain">Create Your Custom Domain<a href="#create-your-custom-domain" class="hash-link" aria-label="Direct link to Create Your Custom Domain" title="Direct link to Create Your Custom Domain"></a></h3>
<p>Log into the myzrok console and access the domains page by clicking on the globe icon in the left navigation menu.</p>
<p><img decoding="async" loading="lazy" alt="myzrok_domains_page" src="/assets/images/myzrok_domains_page-6d92a9076e1bca9640eb301eb6716e5f.png" width="1022" height="581" class="img_ev3q"></p>
<p>Click the CREATE button on the top right of the page to get started.
When you click the create button youll be presented with a form to allow you to enable your custom domain.
Enter your domain into the form field and click CREATE. This will begin the process for setting up your custom domain.
A new managed TLS certificate will be created to host traffic on your domain&#x27;s behalf.</p>
<p><img decoding="async" loading="lazy" alt="myzrok_add_domain" src="/assets/images/myzrok_add_domain-bcf860ac29b46cfe5981db391bcbc521.png" width="844" height="344" class="img_ev3q"></p>
<p>This may take a few minutes.
You may close the form at this time and come back when your domain is <em>pending validation.</em>
Once your certificate is ready, youll be presented with instructions on how to set up your DNS records.</p>
<h3 class="anchor anchorWithStickyNavbar_LWe7" id="creating-dns-records">Creating DNS Records<a href="#creating-dns-records" class="hash-link" aria-label="Direct link to Creating DNS Records" title="Direct link to Creating DNS Records"></a></h3>
<p>zrok will host and manage a TLS certificate for the custom domain on your behalf.
This process requires a DNS validation record to be created in order to prove ownership of the domain.
Follow the prompts in the UI to create a CNAME DNS record with the name and value specified in the UI.</p>
<p><img decoding="async" loading="lazy" alt="myzrok_add_cname" src="/assets/images/myzrok_add_cname-3cbbf4526443142174bab2d22224764a.png" width="847" height="402" class="img_ev3q"></p>
<p>Next, create an A record to direct all DNS requests for your domain to a set of static IPs that are hosted by zrok.</p>
<p><img decoding="async" loading="lazy" alt="myzrok_add_a_record" src="/assets/images/myzrok_add_a_record-550b91f870f6e1df4903220bfa78ae25.png" width="830" height="527" class="img_ev3q"></p>
<p>After youve created your records, you can verify that they are configured properly using the instructions provided in the form.</p>
<p><img decoding="async" loading="lazy" alt="myzrok_verify_dns" src="/assets/images/myzrok_verify_dns-2f721e1a96f56f4f09f3b0b16ea8c1c5.png" width="829" height="528" class="img_ev3q"></p>
<p>If the <code>nslookup</code> command returns the IP addresses supplied for the A-record entry, then DNS for your domain is resolving properly.</p>
<div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar" style="color:#F8F8F2;background-color:#282A36"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token plain">nslookup test.foo.example.io</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">Server: 192.168.86.194</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">Address: 192.168.86.194#53</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">Non-authoritative answer:</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">Name: test.foo.example.io</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">Address: 99.83.220.186</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">Name: test.foo.example.io</span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain">Address: 52.223.6.108</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div>
<p>Once you have created your DNS records, it will take zrok a few minutes to validate that they exist.
You can safely close the form until your certificate has been issued.</p>
<h3 class="anchor anchorWithStickyNavbar_LWe7" id="finalizing-your-custom-domain">Finalizing Your Custom Domain<a href="#finalizing-your-custom-domain" class="hash-link" aria-label="Direct link to Finalizing Your Custom Domain" title="Direct link to Finalizing Your Custom Domain"></a></h3>
<p>After your records have been validated and your certificate has been issued, click the FINALIZE button within 72 hours to complete your custom domain setup.</p>
<p><img decoding="async" loading="lazy" alt="myzrok_finalize" src="/assets/images/myzrok_finalize-71899efbaf429d9be596363607550730.png" width="818" height="224" class="img_ev3q"></p>
<p>From here, myzrok.io will complete the last few steps of creating your custom domain.
This should only take a minute, but if you need to close the form you can find the instructions on how to share your frontend when you return.</p>
<h3 class="anchor anchorWithStickyNavbar_LWe7" id="start-sharing">Start Sharing!<a href="#start-sharing" class="hash-link" aria-label="Direct link to Start Sharing!" title="Direct link to Start Sharing!"></a></h3>
<p>Once the Finalize stage has completed, you can start sharing with your custom DNS.</p>
<p>In order to create shares that utilize your custom DNS, you will need to specify the <code>--frontend</code> flag when creating a share,
or update your environment configuration to use this new frontend by default.</p>
<div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar" style="color:#F8F8F2;background-color:#282A36"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token plain">zrok share public --frontend foo-example--goPIhgtJtz</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div>
<p>You can set the custom frontend as the environment default by running:</p>
<div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar" style="color:#F8F8F2;background-color:#282A36"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token plain">zrok config set defaultFrontend foo-example--goPIhgtJtz</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div>
<p>To validate which frontend is being used, use the <code>zrok status</code> command, which will identify the default frontend being used:</p>
<p><img decoding="async" loading="lazy" alt="zrok_status" src="/assets/images/zrok_status-0ce131c6d8bba0df50b0f2a577707f0a.png" width="404" height="220" class="img_ev3q"></p></div><footer class="theme-doc-footer docusaurus-mt-lg"><div class="row margin-top--sm theme-doc-footer-edit-meta-row"><div class="col"><a href="https://github.com/openziti/zrok/blob/main/docs/../docs/myzrok/custom-domains/index.mdx" target="_blank" rel="noopener noreferrer" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div><div class="col lastUpdated_JAkA"></div></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages"><a class="pagination-nav__link pagination-nav__link--prev" href="/docs/category/myzrok/"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">myzrok</div></a></nav></div></div><div class="col col--3"><div class="tableOfContents_bqdL thin-scrollbar theme-doc-toc-desktop"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#overview" class="table-of-contents__link toc-highlight">Overview</a><ul><li><a href="#prerequisites" class="table-of-contents__link toc-highlight">Prerequisites</a></li><li><a href="#create-your-custom-domain" class="table-of-contents__link toc-highlight">Create Your Custom Domain</a></li><li><a href="#creating-dns-records" class="table-of-contents__link toc-highlight">Creating DNS Records</a></li><li><a href="#finalizing-your-custom-domain" class="table-of-contents__link toc-highlight">Finalizing Your Custom Domain</a></li><li><a href="#start-sharing" class="table-of-contents__link toc-highlight">Start Sharing!</a></li></ul></li></ul></div></div></div></div></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2025 NetFoundry Inc. Built with Docusaurus.</div></div></div></footer></div>
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