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.

3 hosts · 315 ms

HostCertsFirst seenLast seenDNS
invizi.com.au 13 2026-04-10 2026-09-23 ok
login.invizi.com.au 1 2026-09-01 2026-09-01 ok
www.invizi.com.au 17 2026-04-11 2026-09-21 ok

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