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.

5 hosts · 194 ms

HostCertsFirst seenLast seen
adriatic.hr 11 2026-04-15 2026-09-16
*.adriatic.hr 11 2026-04-15 2026-09-16
iznajmljivanje.adriatic.hr 5 2026-06-14 2026-09-27
blog.adriatic.hr 7 2026-04-12 2026-09-01
gtm.adriatic.hr 4 2026-04-27 2026-09-18

Programmatic access: API GET /v1/hosts/adriatic.hr (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/adriatic.hr.