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.

4 hosts · 270 ms

HostCertsFirst seenLast seenDNS
playablefactory.com 18 2025-11-18 2026-10-05 ok
*.playablefactory.com 20 2025-08-11 2026-10-05 —
cdn.dashboard.playablefactory.com 2 2026-04-05 2026-09-05 ok
cdn.export.playablefactory.com 2 2026-04-13 2026-09-13 ok

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