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 · 260 ms

HostCertsFirst seenLast seen
bewertung5.de 5 2026-05-19 2026-09-17
angebote.bewertung5.de 5 2026-06-06 2026-08-15
webmail.bewertung5.de 5 2026-05-19 2026-09-17
www.bewertung5.de 5 2026-05-19 2026-09-17

Programmatic access: API GET /v1/hosts/bewertung5.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/bewertung5.de.