cavimaster

Simple whois tool in a widget
Post a domain name et submit. 
Whois on widget return to you a complet whois query into Jquery lightbox. 
You can use shortcode like: [WHOIS] for put it in your page or post.
<a href="http://www.devsector.ch/cavimaster/category/developpement/wordpress-plugins-widgets" rel="nofollow ugc">Cavimaster_blog</a>
Original PHP whois code by Sven Cailteux – <a href="http://www.dimension-internet.com" rel="nofollow ugc">Dimension internet</a>

Whois on widget

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.

Whois on widget vs WP24 Domain Check