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.

4 hosts · 211 ms

Download CSV
HostCertsFirst seenLast seen
taonga.email 8 2026-06-03 2026-09-26
*.taonga.email 8 2026-06-03 2026-09-26
img.taonga.email 4 2026-05-15 2026-07-14
r.taonga.email 3 2026-05-26 2026-08-14

Programmatic access: API GET /v1/hosts/taonga.email (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/taonga.email.