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.

7 hosts · 208 ms

HostCertsFirst seenLast seen
ovza.com 31 2025-07-17 2026-10-03
*.ovza.com 18 2026-04-17 2026-10-02
staging.ovza.com 4 2026-05-19 2026-07-19
forum.ovza.com 4 2026-05-28 2026-07-27
dev.ovza.com 6 2026-05-19 2026-10-03
awsdev.ovza.com 1 2026-08-09 2026-08-09
www.ovza.com 13 2025-07-17 2026-10-03

Programmatic access: API GET /v1/hosts/ovza.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/ovza.com.