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 · 169 ms

HostCertsFirst seenLast seen
cloud.cards.gemfinance.co.nz 3 2025-09-30 2026-09-17
image.cards.gemfinance.co.nz 3 2025-08-02 2026-08-20
click.cards.gemfinance.co.nz 1 2025-11-03 2025-11-03
view.cards.gemfinance.co.nz 2 2025-09-30 2026-09-17

Programmatic access: API GET /v1/hosts/cards.gemfinance.co.nz (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/cards.gemfinance.co.nz.