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 · 303 ms

HostCertsFirst seenLast seenDNS
futureassist.com.au 36 2026-04-18 2026-10-04 ok
*.futureassist.com.au 13 2026-04-18 2026-10-04 —
wfh.futureassist.com.au 10 2026-04-18 2026-08-14 ok
ai.futureassist.com.au 10 2026-06-05 2026-10-01 ok
logs-api.futureassist.com.au 10 2026-05-15 2026-09-10 ok
*.logs-api.futureassist.com.au 10 2026-05-15 2026-09-10 —
kcm.futureassist.com.au 5 2026-05-06 2026-09-03 ok
emailloggingaddin.futureassist.com.au 6 2026-04-19 2026-08-15 ok
rentalstatementsaddin.futureassist.com.au 17 2026-05-31 2026-09-26 ok
clients.futureassist.com.au 9 2026-04-20 2026-09-17 ok
mta-sts.futureassist.com.au 9 2026-05-21 2026-09-16 ok
support.futureassist.com.au 12 2026-04-19 2026-08-15 ok
www.futureassist.com.au 5 2026-06-06 2026-10-04 ok

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