Whois is a widely used Internet record listing that contains the details of who owns a domain name and how to get in touch with them.
The contact details can be for both the domain’s registrar or the web hosting company providing space or storage for that specific website.

Envato Market is not a legal body which is qualified to give you advice on these matters. Any suggestions on this page are to be considered general and not specific to your situation. When sending legal documentation or taking any form of legal action, we recommend you consult with a legal professional. We can take no responsibility for the repercussions of following the suggestions in this document.

Some seek to fight all piracy they come across, some want to find ways to motivate users of content to pay for it, and some choose to focus on what they do sell and not change the ways of users who want all their content for free. Ultimately, this is your personal choice (and more below on the path Envato takes on the piracy issue).