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.

5 hosts · 295 ms

HostCertsFirst seenLast seenDNS
ellaskitchen.nl 1 2026-03-27 2026-03-27 nodata
loyaliteit.ellaskitchen.nl 1 2026-05-18 2026-05-18 ok
web.loyaliteit.ellaskitchen.nl 1 2026-06-18 2026-06-18 ok
www.loyaliteit.ellaskitchen.nl 1 2026-05-18 2026-05-18 ok
www.ellaskitchen.nl 1 2026-03-27 2026-03-27 ok

Programmatic access, with DNS A records: API GET /v1/hosts/ellaskitchen.nl (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/ellaskitchen.nl.