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.

2 hosts · 214 ms

HostCertsFirst seenLast seenDNS
wp.mister-7.ro 4 2026-04-10 2026-08-10 ok
www.wp.mister-7.ro 4 2026-04-10 2026-08-10 ok

Programmatic access, with DNS A records: API GET /v1/hosts/wp.mister-7.ro (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/wp.mister-7.ro.