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.

16 hosts · 287 ms

HostCertsFirst seenLast seen
jugendherberge.de 1 2025-12-05 2025-12-05
*.jugendherberge.de 2 2025-12-05 2026-01-08
owa.jugendherberge.de 1 2026-01-08 2026-01-08
news.nordsee-sauerland.jugendherberge.de 5 2026-04-28 2026-08-27
karriere.jugendherberge.de 1 2025-12-08 2025-12-08
cloud.djh.jugendherberge.de 3 2026-03-23 2026-08-24
image.djh.jugendherberge.de 4 2026-01-08 2026-09-02
click.djh.jugendherberge.de 4 2026-03-23 2026-08-24
view.djh.jugendherberge.de 3 2026-03-23 2026-08-24
webmail.jugendherberge.de 1 2026-01-08 2026-01-08
service-sachsen.jugendherberge.de 5 2026-04-30 2026-08-28
news.nordwesten.jugendherberge.de 5 2026-04-28 2026-08-27
autodiscover.jugendherberge.de 1 2026-01-08 2026-01-08
wissensmanagement.jugendherberge.de 4 2026-06-07 2026-10-04
pageflow.jugendherberge.de 4 2026-04-11 2026-08-09
bv100-sbc01.by.jugendherberge.de 1 2026-05-18 2026-05-18

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