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.

7 hosts · 302 ms

HostCertsFirst seenLast seenDNS
*.alpha1.super-goo.com 4 2026-04-13 2026-10-05 —
mgrafana.alpha1.super-goo.com 5 2026-05-16 2026-09-13 ok
guacamole.alpha1.super-goo.com 5 2026-05-16 2026-09-13 ok
ticket.alpha1.super-goo.com 5 2026-05-16 2026-09-13 ok
zbxsv.alpha1.super-goo.com 5 2026-05-16 2026-09-13 ok
mtnwzbxsv.alpha1.super-goo.com 5 2026-05-16 2026-09-13 ok
*.infra.super-goo.com 3 2026-04-13 2026-07-10 —

Programmatic access, with DNS A records: API GET /v1/hosts/super-goo.com (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/super-goo.com.