FasterThemes

Quick Whois WordPress Plugin Shows whois information of the provided domain name. You can use Widget in the sidebar or you can also use Shortcode in the pages/posts.
<a href="http://whois.fasterthemes.com/" rel="nofollow ugc">DEMO of Quick Whois plugin</a>
Features:
<ul>
<li>You can use this plugin in your sidebar by dragging and dropping “Quick Whois” Widget.</li>
<li>You can use this in any specific page/post by putting shortcode [quick_whois].</li>
<li>This plugin converts your website into a whois data provider website in a few seconds !</li>
</ul>
<h3>License and Copyrights for Resources used in this plugin</h3>
i) We have used phpwhois.org php script from this website http://www.phpwhois.org Copyright which is a free software and we are allowed to redistribute it and/or 
modify it under the terms of the GNU General Public License v2.
<pre><code>For any help you can mail us at support[at]fasterthemes.com
</code></pre>

Quick Whois

Quick Whois Plugin Shows Whois information of the provided domain name.  You can do this using Widget/Shortcode.

WP24

WP24 Domain Check allows users to check domains if they are free for registration. The responsive form could be easily intregrated via shortcode or widget. Labels and colors are customizeable through the settings page.
Features
<ul>
<li>Easy integration via shortcode or widget</li>
<li>Ajax based search (no page reload required)</li>
<li>Define a list of testable TLDs</li>
<li>Drop-down list (select the TLD from predefinded list)</li>
<li>Free text input (type TLD into domain name field)</li>
<li>Over 1,500 supported TLDs</li>
<li>Possibility of checking every TLD</li>
<li>Internationalized domain name (IDN) support</li>
<li>Check all TLDs simultaneously (asynchronous)</li>
<li>Show detailed whois information (if domain is registered)</li>
<li>Provide price and purchase link for each TLD</li>
<li>WooCommerce integration</li>
<li>Responsive design</li>
<li>Bot protection with reCAPTCHA (version 2 and 3)</li>
<li>Customization of labels and colors</li>
<li>WPML and Polylang compatible</li>
</ul>

WP24 Domain Check


It only works with common TLDs like .com, .org or .net. It doesn't work with most other TLDs. For example, try .ng or something similar.


Does not work with most of the TLDs

Check (whois) domain names for availability. Easy integration via shortcode or widget.

Quick Whois vs WP24 Domain Check