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.

4 hosts · 194 ms

HostCertsFirst seenLast seen
aldi-onlineshop.de 2 2025-07-21 2026-07-06
login.aldi-onlineshop.de 2 2025-07-13 2026-06-12
*.support.aldi-onlineshop.de 4 2025-10-27 2026-09-27
www.aldi-onlineshop.de 2 2025-07-21 2026-07-06

Programmatic access: API GET /v1/hosts/aldi-onlineshop.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/aldi-onlineshop.de.