Search for subdomains of the site
Domain is the main address at which it is available site or server. A subdomain is a part of a domain, its subsection. For example: https://core.telegram.org/ – “core” is a subdomain of “telegram”.
Most sites have many subdomains. Service https://virustotal.com/ from Google searches for them:
one. Go to the website.
2. Click on the tab “URL”.
3. Enter the website domain and click on the search button.
4. Go to category “Relations”.
5. In the section “Subdomains” there will be a list of found subdomains.