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.

5 hosts · 214 ms

HostCertsFirst seenLast seenDNS
grupomarina.cl 3 2026-06-15 2026-08-14 ok
beta.grupomarina.cl 4 2026-04-19 2026-08-17 ok
corporativo.grupomarina.cl 5 2026-04-22 2026-08-20 ok
mta-sts.grupomarina.cl 9 2026-04-17 2026-08-17 ok
www.grupomarina.cl 3 2026-06-15 2026-08-14 ok

Programmatic access, with DNS A records: API GET /v1/hosts/grupomarina.cl (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/grupomarina.cl.