Is there a method to find all domains of the same site?
 

I need a method to find all or some domains that lead to the same site.
For example:
xvideos.com - xvideos2.com - xvideos3.com are all different domains but they all lead to the same site.

Any ideas? Thanks in advance.

Do the domains use cloudflare?

Let's say no, but it is better if there is a general solution regardless if the domains are using cloudflare or not

That is not how DNS or virtual hosts work.

SecurityTrails.com can do domain associations by different types of groupings such as IP, CIDR-IP, A records, DNS, MX records, etc. It's hit and miss, sometimes it works incredibly, other times it's terrible (usually due to Cloudflare).
WG

Is there a tool like BlackWidow (defunct) that helps you find all the other domains on a shared hosting account?