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.

5 hosts · 230 ms

HostCertsFirst seenLast seen
sparkasse-freising-moosburg.de 1 2026-04-23 2026-04-23
psd2-xs2a.sparkasse-freising-moosburg.de 3 2025-09-02 2026-08-14
module.sparkasse-freising-moosburg.de 1 2026-04-23 2026-04-23
mailing.sparkasse-freising-moosburg.de 5 2026-05-01 2026-08-29
www.sparkasse-freising-moosburg.de 1 2026-04-23 2026-04-23

Programmatic access: API GET /v1/hosts/sparkasse-freising-moosburg.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/sparkasse-freising-moosburg.de.