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 · 229 ms

HostCertsFirst seenLast seen
bea-brak.de 2 2025-07-11 2026-07-15
*.bea-brak.de 2 2025-07-11 2026-07-15
test.bea-brak.de 1 2025-12-18 2025-12-18
www.test.bea-brak.de 1 2025-12-18 2025-12-18

Programmatic access: API GET /v1/hosts/bea-brak.de (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/bea-brak.de.