If you've made any kind of DNS entries involving this subdomain, then congratulations, you've notified the world of its existence. There are tools out there th

If you've made any kind of DNS entries involving this subdomain, then congratulations, you've notified the world of its existence. There are tools out there that leverage this information and let you get all the subdomains for a domain. Here's the first one I found in a quick search: https://pentest-tools.com/information-gathering/find-subdomains-of-domain https://pentest-tools.com/information-gathering/find-subdoma...