Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts and first/last seen dates.

4 hosts · 201 ms

HostCertsFirst seenLast seen
stealth.net 2 2026-03-15 2026-08-31
*.stealth.net 1 2026-03-15 2026-03-15
scdb.stealth.net 1 2026-08-31 2026-08-31
www.stealth.net 1 2026-08-31 2026-08-31

Programmatic access: API GET /v1/hosts/stealth.net (API key for paging).

Shown here: hostnames with a certificate that is valid now or expired within the last 90 days. The full history since 2013 — hostnames whose last certificate expired earlier — is a Pro plan method: GET /v1/hosts-history/stealth.net.