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.

11 hosts · 845 ms

HostCertsFirst seenLast seen
mdirector.com 1 2025-10-10 2025-10-10
*.mdirector.com 1 2025-10-10 2025-10-10
static.2013.mdirector.com 1 2025-10-10 2025-10-10
www.static.2013.mdirector.com 1 2025-10-10 2025-10-10
*.pre.mdirector.com 5 2026-05-03 2026-09-27
appshop.mdirector.com 3 2025-10-29 2026-09-29
clients.landings.mdirector.com 1 2025-11-06 2025-11-06
www.clients.landings.mdirector.com 1 2025-11-06 2025-11-06
*.test.mdirector.com 5 2026-05-03 2026-09-27
*.dev.mdirector.com 5 2026-05-03 2026-09-27
shopify.mdirector.com 2 2026-03-09 2026-07-25

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