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.

12 hosts · 175 ms

HostCertsFirst seenLast seen
admtech.com.au 13 2026-05-09 2026-09-27
*.admtech.com.au 8 2026-05-09 2026-09-23
psa.admtech.com.au 3 2026-06-14 2026-08-16
training.admtech.com.au 3 2026-06-14 2026-08-16
search.admtech.com.au 5 2026-04-26 2026-08-30
adm.admtech.com.au 3 2026-06-14 2026-08-16
learn.admtech.com.au 4 2026-04-19 2026-08-23
info.admtech.com.au 5 2026-04-26 2026-08-24
shop.admtech.com.au 4 2026-04-21 2026-09-08
tour.admtech.com.au 5 2026-05-03 2026-09-06
print.admtech.com.au 5 2026-04-30 2026-08-28
www.admtech.com.au 5 2026-05-24 2026-09-27

Programmatic access: API GET /v1/hosts/admtech.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/admtech.com.au.