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.

3 hosts · 306 ms

HostCertsFirst seenLast seen
universal-versand.at 5 2025-09-16 2026-09-21
n.universal-versand.at 5 2026-04-28 2026-08-26
www.universal-versand.at 1 2026-09-21 2026-09-21

Programmatic access: API GET /v1/hosts/universal-versand.at (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/universal-versand.at.