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.

8 hosts · 271 ms

HostCertsFirst seenLast seenDNS
benettiyachts.it 1 2026-02-03 2026-02-03 ok
*.benettiyachts.it 1 2026-02-03 2026-02-03 —
events2.benettiyachts.it 5 2026-04-29 2026-08-17 ok
accoglienza.benettiyachts.it 5 2026-06-01 2026-09-29 ok
ym.benettiyachts.it 5 2026-06-04 2026-10-03 ok
go.benettiyachts.it 5 2026-06-06 2026-10-04 ok
app.benettiyachts.it 5 2026-06-04 2026-10-03 ok
events.benettiyachts.it 10 2026-05-07 2026-07-10 ok

Programmatic access, with DNS A records: API GET /v1/hosts/benettiyachts.it (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/benettiyachts.it.