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.

4 hosts · 223 ms

HostCertsFirst seenLast seen
game.es 2 2025-07-02 2026-07-06
*.game.es 2 2025-07-02 2026-07-06
CIS.game.es 1 2025-12-23 2025-12-23
privilegios.game.es 1 2026-05-21 2026-05-21

Programmatic access: API GET /v1/hosts/game.es (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/game.es.