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.

6 hosts · 201 ms

HostCertsFirst seenLast seen
inductiveautomation.com.au 5 2025-10-01 2026-09-07
adhoc.inductiveautomation.com.au 1 2026-07-27 2026-07-27
support.inductiveautomation.com.au 4 2026-04-16 2026-08-14
dev.inductiveautomation.com.au 2 2025-10-01 2026-09-01
www.dev.inductiveautomation.com.au 2 2025-10-01 2026-09-01
www.inductiveautomation.com.au 5 2025-10-01 2026-09-07

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