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.

12 hosts · 465 ms

HostCertsFirst seenLast seen
zooroyal.de 33 2026-05-05 2026-09-29
*.zooroyal.de 16 2026-05-09 2026-09-29
service.zooroyal.de 5 2026-05-31 2026-09-28
karriere.zooroyal.de 3 2026-06-18 2026-08-24
replatforming.zooroyal.de 15 2026-04-19 2026-05-18
link.zooroyal.de 5 2026-06-05 2026-10-03
cloud.mail.zooroyal.de 2 2025-12-05 2025-12-06
image.mail.zooroyal.de 23 2025-12-05 2026-10-08
click.mail.zooroyal.de 2 2025-12-05 2025-12-06
view.mail.zooroyal.de 2 2025-12-05 2025-12-06
newsletter.zooroyal.de 5 2026-05-09 2026-09-06
www.zooroyal.de 15 2026-05-05 2026-09-15

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