PHP AJAX Instant Domain Availability Checker
PHP AJAX Instant Domain Availability Checker Demo

Main Features

1. AJAX! Or press ENTER key if the AJAX does not kick in automatically
   
   
2. No external PHP/JavaScript libraries. Just do a php include to add it to your page. It is that easy!
   
   
3. Supports most domains (e.g. .ES is not supported as it has no public whois servers).
   
   
4. Supports Recaptcha. Supports TLD Limitation (i.e. allow checking of only specified extensions)
   
   
5. Keeps a list of available domains in a separate box (can be disabled)
   
   
6. No MySQL required. PHP 4.4.7 Tested. PHP 5 Tested.
   
   
7. Licenced under Creative Commons Attribution 3.0 License. Free but attribution required!

The following is the live demo. For every recaptcha entry, the script is configured to allow 10 domain checking queries