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.

6 hosts · 243 ms

Download CSV
HostCertsFirst seenLast seen
klarna.nz 9 2025-06-24 2026-09-10
shop.playground.klarna.nz 2 2025-09-20 2026-08-20
pop.playground.klarna.nz 2 2025-09-20 2026-08-20
shop.klarna.nz 2 2025-09-18 2026-08-18
pop.klarna.nz 2 2025-09-18 2026-08-18
www.klarna.nz 9 2025-06-24 2026-09-10

Programmatic access: API GET /v1/hosts/klarna.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/klarna.nz.