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 · 203 ms

HostCertsFirst seenLast seen
clearscore.nz 21 2026-05-29 2026-09-25
*.clearscore.nz 21 2026-05-29 2026-09-25
links.mail.clearscore.nz 10 2026-04-16 2026-06-14
help.clearscore.nz 5 2026-05-27 2026-09-24

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