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.

7 hosts · 246 ms

HostCertsFirst seenLast seen
lumories.si 5 2026-04-28 2026-08-26
xtg.lumories.si 10 2026-04-25 2026-08-21
link.lumories.si 3 2026-06-25 2026-08-24
support.lumories.si 18 2026-05-31 2026-09-27
collector.sst.lumories.si 4 2026-06-12 2026-10-10
www.lumories.si 5 2026-04-28 2026-08-26
link.reply.lumories.si 3 2026-06-04 2026-08-03

Programmatic access: API GET /v1/hosts/lumories.si (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/lumories.si.