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.

8 hosts · 264 ms

HostCertsFirst seenLast seen
allit.au 11 2026-04-21 2026-09-25
*.allit.au 6 2026-08-10 2026-09-18
quote.allit.au 2 2026-03-07 2026-07-19
ai.allit.au 1 2026-08-10 2026-08-10
link.allit.au 5 2026-04-22 2026-08-20
cipp.allit.au 3 2026-08-10 2026-08-12
forms.allit.au 4 2026-06-13 2026-10-12
www.allit.au 6 2026-04-21 2026-09-24

Programmatic access: API GET /v1/hosts/allit.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/allit.au.