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.

13 hosts · 222 ms

HostCertsFirst seenLast seen
joinhandshake.fr 40 2026-04-24 2026-10-05
*.joinhandshake.fr 29 2026-05-06 2026-10-04
segment-api.joinhandshake.fr 2 2026-05-06 2026-06-29
audiorca-external.joinhandshake.fr 3 2026-04-11 2026-07-31
cdn.joinhandshake.fr 2 2026-06-03 2026-07-29
segment-cdn.joinhandshake.fr 3 2026-04-13 2026-07-30
importer-admin.joinhandshake.fr 2 2026-05-07 2026-07-02
*.learn.joinhandshake.fr 6 2026-05-06 2026-09-01
*.labs.joinhandshake.fr 4 2026-10-05 2026-10-05
*.ext.joinhandshake.fr 6 2026-05-06 2026-09-01
preview.joinhandshake.fr 4 2026-06-03 2026-10-06
www.joinhandshake.fr 5 2026-04-25 2026-08-28
statuspage-proxy.joinhandshake.fr 3 2026-04-22 2026-08-08

Programmatic access: API GET /v1/hosts/joinhandshake.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/joinhandshake.fr.