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 · 208 ms

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HostCertsFirst seenLast seen
svetla.sk 5 2026-04-28 2026-08-26
xtg.svetla.sk 7 2026-06-09 2026-10-05
daaryn.svetla.sk 4 2026-05-08 2026-09-14
servis.svetla.sk 5 2026-05-09 2026-09-06
support.svetla.sk 22 2026-05-31 2026-09-26
collector.sst.svetla.sk 4 2026-06-12 2026-10-10
www.svetla.sk 5 2026-04-28 2026-08-26

Programmatic access: API GET /v1/hosts/svetla.sk (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/svetla.sk.