Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts, first/last seen and live DNS status.

8 hosts · 194 ms

HostCertsFirst seenLast seenDNS
njuskalo.hr 1 2026-02-10 2026-02-10 ok
*.njuskalo.hr 1 2026-02-10 2026-02-10 —
oglasavanje.njuskalo.hr 3 2026-04-09 2026-06-09 ok
help.desk.njuskalo.hr 2 2025-10-23 2026-09-23 ok
helpdesk.njuskalo.hr 2 2025-10-23 2026-09-23 ok
promo.njuskalo.hr 16 2026-05-20 2026-09-15 ok
autodiscover.njuskalo.hr 4 2026-04-14 2026-08-12 ok
clicks.njuskalo.hr 5 2026-05-14 2026-09-11 ok

Programmatic access, with DNS A records: API GET /v1/hosts/njuskalo.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/njuskalo.hr.