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.

7 hosts · 216 ms

HostCertsFirst seenLast seen
glueckundglanz.de 13 2026-05-21 2026-10-08
link.glueckundglanz.de 5 2026-06-05 2026-10-01
mail.glueckundglanz.de 5 2026-05-03 2026-09-02
webmail.glueckundglanz.de 5 2026-05-03 2026-09-02
account.glueckundglanz.de 19 2026-05-24 2026-10-03
www.glueckundglanz.de 17 2026-05-20 2026-09-30
entrupy.glueckundglanz.de 2 2026-10-09 2026-10-09

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