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.

13 hosts · 323 ms

HostCertsFirst seenLast seenDNS
healthed.com.au 14 2025-09-11 2026-08-30 ok
*.healthed.com.au 8 2026-04-27 2026-08-24 —
dev-env1.healthed.com.au 2 2026-05-15 2026-05-15 ok
dev-env2.healthed.com.au 2 2026-05-15 2026-05-15 ok
ac.healthed.com.au 11 2026-05-25 2026-09-20 ok
static.healthed.com.au 2 2026-05-20 2026-05-20 ok
cpd.healthed.com.au 10 2026-04-16 2026-08-12 ok
staging.healthed.com.au 10 2026-04-13 2026-09-14 ok
openvpn.healthed.com.au 6 2025-07-19 2026-06-22 ok
www.openvpn.healthed.com.au 6 2025-07-19 2026-06-22 nxdomain
pentest.healthed.com.au 2 2026-05-15 2026-05-15 ok
dev.healthed.com.au 2 2026-06-09 2026-06-09 ok
www.healthed.com.au 6 2025-09-11 2026-08-30 ok

Programmatic access, with DNS A records: API GET /v1/hosts/healthed.com.au (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/healthed.com.au.