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.

7 hosts · 281 ms

HostCertsFirst seenLast seenDNS
tearfund.org.au 17 2026-05-08 2026-10-02 ok
*.tearfund.org.au 17 2026-05-08 2026-10-02 —
online.tearfund.org.au 15 2026-04-28 2026-08-08 ok
fundraise.tearfund.org.au 10 2026-05-18 2026-09-15 ok
edm.tearfund.org.au 5 2026-05-12 2026-09-10 ok
help.tearfund.org.au 2 2026-06-14 2026-08-24 ok
connect.tearfund.org.au 2 2026-06-14 2026-08-24 ok

Programmatic access, with DNS A records: API GET /v1/hosts/tearfund.org.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/tearfund.org.au.