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 · 187 ms

HostCertsFirst seenLast seen
weinfuerst.de 17 2026-05-17 2026-09-27
*.weinfuerst.de 3 2025-10-15 2026-09-15
marketing.weinfuerst.de 16 2026-06-01 2026-09-28
cloud.mail.weinfuerst.de 2 2026-08-27 2026-08-27
image.mail.weinfuerst.de 3 2026-01-21 2026-05-13
click.mail.weinfuerst.de 1 2025-11-06 2025-11-06
view.mail.weinfuerst.de 1 2025-11-06 2025-11-06
forms.weinfuerst.de 8 2026-05-11 2026-08-10
account.weinfuerst.de 12 2026-04-20 2026-10-01
www.weinfuerst.de 16 2026-05-17 2026-09-25

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