Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts, first/last seen and live DNS status.

3 hosts · 224 ms

HostCertsFirst seenLast seenDNS
sgtm.memepascap.fr 3 2026-05-28 2026-09-11 ok
app.memepascap.fr 5 2026-05-08 2026-09-06 ok
www.memepascap.fr 5 2026-05-22 2026-09-20 ok

Programmatic access, with DNS A records: API GET /v1/hosts/memepascap.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/memepascap.fr.