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.

8 hosts · 348 ms

HostCertsFirst seenLast seenDNS
milfordfoundation.co.nz 32 2026-04-17 2026-09-21 ok
*.milfordfoundation.co.nz 20 2026-04-20 2026-09-21 —
linked.milfordfoundation.co.nz 5 2026-05-18 2026-09-15 ok
link.milfordfoundation.co.nz 5 2026-04-26 2026-08-24 ok
christmas.milfordfoundation.co.nz 2 2026-10-04 2026-10-04 ok
uat.milfordfoundation.co.nz 12 2026-04-19 2026-08-16 ok
dev.milfordfoundation.co.nz 20 2026-04-27 2026-07-18 nxdomain
www.milfordfoundation.co.nz 8 2026-04-18 2026-08-14 ok

Programmatic access, with DNS A records: API GET /v1/hosts/milfordfoundation.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/milfordfoundation.co.nz.