WP Domain Checker

WP Domain Checker is a powerful and easy-to-use WordPress plugin that lets your visitors check domain name availability directly from your website. It supports all major gTLDs and ccTLDs, allowing users to instantly search for domain names in real time.

Built with AJAX for a smooth user experience, WP Domain Checker works seamlessly with shortcodes, widgets, WooCommerce, and WHMCS, making it perfect for hosting companies, domain resellers, or anyone who wants to add domain search functionality to their site.

With the latest version, we’ve taken things further:

RDAP Integration: We’ve adopted the modern RDAP protocol, providing faster and more reliable lookup results. The plugin automatically switches to legacy WHOIS for TLDs that haven’t implemented RDAP yet.

Custom Theme Designer: Easily personalize your domain checker’s appearance. Choose your own color palette and match it perfectly with your site’s design—right from the plugin settings panel.

Features

• Check domain name availability for any gTLD and ccTLD
• Whois domain name
• Made with AJAX
• Easily use multiple checker with Shortcode
• Easily use with Widget
• Easily check from dashboard admin
• Easily customize from admin panel
• No need domain reseller API
• Custom Link for Affiliates
• Integrated with WHMCS
• Integrated with WooCommerce
• Support IDN Domain Check
• Protected with New Google reCAPTCHA
• Support more than 1300+ TLDs
• Allow Only Specific TLD Extensions to Check
• Custom Pricing for WooCommerce
• Custom CSS
• Unlimited Colors
• Multiple TLDs Check
• Domain Caches
• Custom Whois Server
• Support WHMCS Bridge & WHMPRESS
• Transfer Button
• Whois Domain Lookup Only
• Whois IP Address Lookup (IPv4 & IPv6 supported)
• RDAP + WHOIS support for comprehensive lookup coverage
• Theme customization

Why Choose WP Domain Checker

Whether you’re building a hosting business, running an affiliate site, or simply want to enhance your website with domain search functionality, WP Domain Checker gives you everything you need.

It’s lightweight, flexible, and constantly updated to stay ahead of the evolving domain ecosystem — now with full RDAP support and modern customization options.

Change Log

v.7.0.0 - November 6, 2025

Implement RDAP
New Admin Panel
Added Caching
Added Theme Customization
Fixed a lot of TLDs.
Fixed Compability issue.

v.6.0.1 - January 9, 2024

Minor code/bug fixes.
Fixed a lot of TLDs.
IP Address Lookup now support IPv6.

v.6.0.0 - December 30, 2023
"Firstly, we apologize for the lack of updates over the past three years. We've faced challenging times due to the impact of COVID-19. However, we're now back and committed to regularly updating the plugin." 

Fixes:
Improved compatibility with WordPress & WooCommerce latest version.
Resolved issues with numerous broken TLDs.
We're delighted to introduce our new Documentation & Demo website at https://wpdomainchecker.com.

v.5.1.2 - March 20, 2021
Improvement - added additional whois server (whois.arin.net) for Whois IP Lookup. Now it will show result from APNIC and ARIN. Thanks to F8N1 for the feedback.

v.5.1.1 - 10 Feb 2021
New - Added IP Address Whois Lookup
Fix - Font Awesome conflict
Fix - Minor code/bug fixes.

v.5.1.0 - 30 November 2020
New - Added Whois Domain Lookup Only. (Howto: use option whoislookuponly="yes" in the shortcode)
Improvement - There are two options to display multiple TLD check, Full or Partial.
Improvement - Add support to IDN TLD (e.g: .рф, etc). Only few IDN TLD supported currently. We will update more later.
Fix - White space in domain name.
Fix - Minor code/bug fixes.

v.5.0.4 - 27 July 2020
Fix - Changes on color style not take any effect in the frontend.
Fix - Custom Placeholder not working from shortcode.
Fix - Minor code fixes.

v.5.0.3 - 30 June 2020
Fix - All strings should be translatable.
Fix - Dashed domain can't be added to cart (WHMCS).
Fix - Minor code fixes.
Improvement - Google Fonts now hosted locally.

v.5.0.2 - 17 June 2020
Fix - Fix an issue due deprecated function in PHP Version > 7.2
Fix - Minor CSS fix.
Fix - Invisible recaptcha not working properly.

v.5.0 - 15 June 2020
New - Added new domain search form design, minimalist and clean. Check the documentation for more details.
New - Added Domain Cache, you can cache the domain result for X seconds. This is useful to avoid exceeding daily domain query limit from whois server.
Improvement - Added option to customize "Require Domain Text" and "Require Recaptcha Text" 
Improvement - Added option to enable/disable multiple TLD search at once.
Improvement - Few options in plugin settings now available in the Shortcode, check the documentation for more details.
Fix - Minor code fixes.

v.4.4.1 - 12 February 2020
Fix - Unsupported TLD message does not appear.
Fix - Minor code fixes.

v.4.4.0 - 3 February 2020
Improvement -  Added a option to limit domain character length for each TLD.
Improvement -  Added a option to use custom Whois Server (http based or whois based on port 43)
Improvement - Domain results sorting order now based on mutiple TLDs defined in the settings not randomly anymore.
Fix - Fixed XSS Vulnerability.
Fix - Minor code fixes

v.4.3.11 - 22 March 2019
Fix - Minor code fixes
Fix - Domain always taken on several website
Fix - Domain not showing in Cart
Improvement - Add WDC option in Product Type
Improvement - Add "allowed_tld" Shortcode parameter

v4.3.9 - 5 March 2019
Fix - Minor code fixes
Fix - Deprecated Function in PHP 7.x
Fix - Error with Woocommerce Force Sells Plugin
Improvement - Support HTTP Whois

v4.3.6 - 12 July 2018
Fix - Fixs all TLDs taken in v4.3.5

v4.3.5 - 12 July 2018
Fix - Minor CSS code fixes
Fix - Several TLDs fixes

v4.3.2 - 12 May 2018
Fix - Minor code fixes
Fix - UI not responsive on mobile device

v4.3.1 - 3 May 2018
Fix - Can't add to cart on Woocommerce Integration
Fix - Wrong custom pricing when TLD in Uppercase
Improvement - Improve UI on Widget 

v4.3.0 - 1 May 2018
New feature - Invisible Google Recaptcha (You may need create new Site Key & Secret Key)
Fix - Compability issues with Woocommerce Subscriptions
Improvement - Minor code fixes
Improvement - Added new template tag and available to use in custom url. ({domain} - {sld} - {tld})
Improvement - Ability to Custom whois button url & whois button text
Improvement - Ability to put link in all results box
Improvement - UX & UI improvements.

v4.2.0 - July 2017
Improve compatibility with Woocommerce 3.0.x
Add Whois Importer, Fix any broken TLDs remotely from settings.
Add Ajax Add to Cart (WooCommerce Only)
Improve Admin UI
Add WP Nonce to Whois Page to prevent spam.
Implement multiple ajax request on domain checker.

v4.0.2 - 30 June 2017
Improve compatibility with Woocommerce 3.0.x

v4.0.1 - 13 April 2017
Fix custom price issue with Woocommerce 3.0.x
Fixs -1 Error while any cache plugin Installed
Fixs several TLDs issues
Add some new TLDs

v4.0.0 - Jun 07, 2016
Fixs Recaptcha conflict with Contact Form 7
New Design & Speed Improvement
Update Titan Framework
1000+ TLDs

v.3.4.3 - Mar 14, 2016
Fixs Invalid Header
Update Titan Framework to latest version

v.3.4.2 - Feb 21, 2016
Fixs Custom Links Integration Bugs
Update API to new URL. (Important for user who get blocked on port 43 by their hosting)
Add some new TLDs.

v.3.4.0 - 15 Sep, 2015
Fix SSL Issues
Update Titan Framework to latest version
Fix Can't type Vowel Characters

v.3.3 - 24 Jul 2015
Fixs WHMCS add to cart issue.
Add some new TLDs (accountants, apartments, bingo, cafe, care, cash, casino, chat, church, city, claims, clinic, coach, credit, creditcard, deals, dental, digital, discount, exchange, fail, finance, financial, fitness, football)

v.3.2 - 10 Jun, 2015
Bug Fixs - Backspace issue in Firefox Browser
Add some new TLDs (.legal, .business, .ltda, .fashion, .flowers, .garden, .green, .wedding, .design, .auction, .band, .dentist, .forsale, .mortgage, .rip, .space, .cricket, .delivery, .energy, .lgbt, .party", .science, .vote, .yoga, .cymru, .wales, .market)

v.3.1 - 22 May, 2015
Bug Fixes - Multiple Check Function Conflict

v.3.0 - 19 May, 2015
Add Multiple TLDs Check
Add Styles Option (Unlimited Color)
Add Custom CSS
Hide Add to Cart Button on Single Page WooCommerce
Hide Add to Cart Button on Product Loop WooCommerce

v2.7 - Apr 4, 2015
Fix bug zero price of Custom Pricing for WooCommerce

v2.6 - Mar 14, 2015
Custom Pricing for WooCommerce

v2.5.1 - Mar 10, 2015
Fixs css style (text responsive)

v2.5 - Feb 28, 2015
Fix minor bugs
Redesign into Flat Bootstrap

v2.4 - Feb 25, 2015
Added some new TLD

v2.3 - Feb 5, 2015
Fixed force individual cart multiple items WooCommerce

v2.2 - Feb 1, 2015
Added multiple checkers for multiple product WooCommerce

v2.1 - Jan 24, 2015
Fixed force individual cart items WooCommerce

v2.0 - Jan 22, 2015
Added template tag {domain} to custom link
Added feature to allow specific TLD extensions to check
Fixed Minor Bugs

v1.3 - Jan 10, 2015
Added new TLDs suggested by user
Added new Google reCAPTCHA
Integrated with WooCommerce

v1.2 - Jan 7, 2015
Added IDN domain check support
Added more whois server

v1.1 - Jan 7, 2015
Fix Widget Dashboard Display
Move JS to footer

v1.0 - Jan 6, 2015
First Release