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.

10 hosts · 172 ms

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HostCertsFirst seenLast seen
dina.de 18 2025-08-05 2026-10-15
*.dina.de 2 2026-03-26 2026-09-16
intra.dina.de 5 2026-06-01 2026-09-29
knowledge.dina.de 11 2026-04-25 2026-10-18
blog.dina.de 11 2026-04-23 2026-10-17
nl.dina.de 15 2026-04-23 2026-10-17
sales.dina.de 5 2026-06-01 2026-09-29
ticket.dina.de 12 2026-06-18 2026-10-15
start.dina.de 13 2026-04-23 2026-10-17
www.dina.de 10 2025-08-05 2026-10-15

Programmatic access: API GET /v1/hosts/dina.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/dina.de.