Hostname finder — SearchYeah
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SearchYeah tool

Hostname finder

Passive hostnames from Certificate Transparency plus common DNS names. No brute-force wordlist.

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Related SearchYeah tools

These checks complement the result above. The current domain/URL is carried forward when the next tool accepts it.
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Certificate names

List hostnames seen on public certificates for the domain (Certificate Transparency).

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DNS lookup

Look up A, AAAA, CNAME, MX, NS, TXT, SOA and CAA records with TTL plus basic email-DNS checks.

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Domain information

WHOIS/RDAP dossier: registrar, dates, status, nameservers, DNS, TLS and HTTPS probe.

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Hosting provider

Resolve a host to IP and show organisation, ASN and location.

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Safety
SearchYeah accepts only public Internet targets. Local, private and reserved addresses are blocked, redirects are revalidated, standard web ports are enforced and diagnostics use short timeouts.