Re:Ask HN: How did internet discover my subdomain?
by fragmede on Friday March 07, 2025 @03:05AM
(#43288140)
Just the default hostname. It won't reveal all of them or any of the IP addresses of that box. secret-freedom-fighter.ice-cream-shop.example.com could have the same IP as example.com and you'd only know example.com
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Re:Ask HN: How did internet discover my subdomain?
by A1kmm on Friday March 07, 2025 @03:11AM
(#43288170)
If you've got one cert with a subject alt name for each host, they'd see them all. If you use SNI and they have different certificates, the domains might still be in Certificate Transparency logs. If a wildcard cert is used, that could help to conceal the exact subdomain.