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 · 205 ms

HostCertsFirst seenLast seen
trustlocal.de 6 2025-06-19 2026-07-05
*.trustlocal.de 8 2025-06-19 2026-09-04
*.ephemeral.trustlocal.de 2 2026-03-05 2026-08-05
pro.trustlocal.de 12 2026-05-01 2026-08-27
payt.trustlocal.de 3 2026-06-02 2026-08-17

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