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.

11 hosts · 393 ms

HostCertsFirst seenLast seenDNS
clouddentistry.com 5 2026-03-29 2026-09-03 ok
*.clouddentistry.com 3 2026-05-19 2026-09-03 —
auth0.clouddentistry.com 10 2026-05-20 2026-09-16 ok
blog.clouddentistry.com 8 2026-04-24 2026-08-20 ok
go.clouddentistry.com 3 2026-04-14 2026-08-16 ok
www.go.clouddentistry.com 3 2026-04-14 2026-08-16 ok
faq.clouddentistry.com 2 2025-10-07 2026-09-07 ok
members.clouddentistry.com 2 2025-07-02 2026-06-02 ok
assets.clouddentistry.com 2 2026-06-25 2026-06-25 ok
www.clouddentistry.com 2 2026-03-29 2026-08-29 ok
try.clouddentistry.com 10 2026-04-24 2026-08-20 ok

Programmatic access, with DNS A records: API GET /v1/hosts/clouddentistry.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/clouddentistry.com.