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 · 271 ms

HostCertsFirst seenLast seen
terrancle.fr 7 2026-04-24 2026-09-21
pageapagetoulouse.terrancle.fr 5 2026-05-11 2026-09-22
blog.terrancle.fr 3 2026-04-16 2026-10-03
extranet.terrancle.fr 5 2026-05-10 2026-09-07
www.terrancle.fr 7 2026-04-24 2026-09-21

Programmatic access: API GET /v1/hosts/terrancle.fr (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/terrancle.fr.