JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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Here's a guide that explains how to use your domain name with your form.
Basically, you will have to create a CNAME record in your Cpanel or DNS dashboard.
This guide might be of help http://documentation.unbounce.com/hc/en-us/articles/203687274-Setting-Up-Your-CNAME-with-GoDaddy-godaddy-com-. This applies to godaddy.com