How could I discover whether a domain is registered from the client?

Question

I'd like to present the users of a Web app with a form where they type in a prospective domain name, and then using JavaScript the client looks up whether it's available.

Is there a way to do that without involving my own host machine? Like sending an AJAX request from the user's browser to some Web service that looks up domains? Does such a service exist?

Answer 1

The best way is to use ajaxwhois service. This is a complete ajax based call. You can use .ajax function of jQuery for the same.

To automatically launch a domain search, use this url: http://ajaxwhois.com/?domainname or http://ajaxwhois.com/?domainname.extension

Reference:- ajaxwhois

Answer 2

Check this out: http://lbolla.wordpress.com/2011/04/05/get-registered-domain-in-python-and-javascript/

I've implemented reg-dom-libs (http://www.dkim-reputation.org/regdom-libs/) in Javascript and Python.