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

[zawali]

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.

[money biz]

Do the domains use cloudflare?

[zawali]

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

[fuzebox]

That is not how DNS or virtual hosts work.

[WiredGuy]

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

[$5 submissions]

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