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 · 180 ms

Download CSV
HostCertsFirst seenLast seen
m.news.marionnaud.paris 2 2026-05-04 2026-10-04
res.news.marionnaud.paris 4 2026-05-04 2026-10-04
mta-sts.news.marionnaud.paris 1 2026-05-19 2026-05-19
t.news.marionnaud.paris 2 2026-05-04 2026-10-04

Programmatic access: API GET /v1/hosts/news.marionnaud.paris (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/news.marionnaud.paris.