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 · 330 ms

HostCertsFirst seenLast seen
lunolife.com 13 2026-05-16 2026-09-26
wholesale.lunolife.com 1 2026-09-24 2026-09-24
api.lunolife.com 5 2026-04-28 2026-09-11
www.lunolife.com 13 2026-05-16 2026-09-25

Programmatic access: API GET /v1/hosts/lunolife.com (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/lunolife.com.