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.

14 hosts · 217 ms

HostCertsFirst seenLast seen
debtist.de 25 2026-04-15 2026-10-09
*.debtist.de 6 2026-05-06 2026-09-20
static.debtist.de 4 2026-04-25 2026-09-21
unsubscribe.debtist.de 14 2026-04-15 2026-10-09
internal-accounting.debtist.de 18 2026-05-22 2026-09-17
api.debtist.de 4 2026-06-03 2026-09-20
sandbox-api.debtist.de 5 2026-05-01 2026-09-22
trail.debtist.de 5 2026-05-12 2026-09-08
app.debtist.de 7 2026-04-22 2026-08-22
staging-app.debtist.de 3 2026-05-05 2026-08-24
sandbox-app.debtist.de 3 2026-05-05 2026-08-24
webmanagement.debtist.de 4 2026-05-13 2026-09-21
sandbox-webmanagement.debtist.de 4 2026-04-23 2026-09-18
www.debtist.de 4 2026-04-26 2026-09-27

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