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.

5 hosts · 215 ms

HostCertsFirst seenLast seen
originweddings.ca 14 2026-04-14 2026-09-26
*.originweddings.ca 9 2026-04-14 2026-09-26
mail.originweddings.ca 5 2026-05-02 2026-09-01
t.originweddings.ca 5 2026-04-25 2026-08-22
www.originweddings.ca 5 2026-05-02 2026-09-01

Programmatic access: API GET /v1/hosts/originweddings.ca (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/originweddings.ca.