zulip/static/templates/settings/admin-realm-domains-list.handlebars

{{#with realm_domain}}
<tr>
    <td class="domain">{{domain}}</td>
    <td>
        <label class="checkbox">
            <input type="checkbox" class="allow-subdomains"
              {{#if allow_subdomains}} checked="checked" {{/if}} />
            <span></span>
        </label>
    </td>
    <td><button class="button btn-danger small rounded delete_realm_domain">{{t "Remove" }}</button></td>
</tr>
{{/with}}