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.

15 hosts · 279 ms

HostCertsFirst seenLast seen
zubit.de 5 2026-04-14 2026-08-11
*.zubit.de 1 2026-06-10 2026-06-10
ha.zubit.de 2 2026-08-18 2026-08-18
compound.zubit.de 5 2026-05-27 2026-09-23
time.zubit.de 4 2026-02-19 2026-07-20
hosting.zubit.de 5 2026-04-28 2026-08-26
crm.zubit.de 5 2026-05-25 2026-09-21
securityscan.zubit.de 4 2026-04-14 2026-08-11
vuln.zubit.de 10 2026-04-30 2026-08-28
wms.zubit.de 5 2026-05-27 2026-09-23
zubit-wms.zubit.de 5 2026-05-27 2026-09-23
ts.zubit.de 1 2026-04-27 2026-04-27
www.ts.zubit.de 1 2026-04-27 2026-04-27
mta-sts.zubit.de 3 2026-05-17 2026-08-11
www.zubit.de 4 2026-04-14 2026-08-11

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