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.

3 hosts · 248 ms

HostCertsFirst seenLast seenDNS
eaed.be 5 2026-05-22 2026-09-18 ok
nas.eaed.be 5 2026-05-17 2026-09-14 ok
requests.eaed.be 2 2026-10-03 2026-10-03 ok

Programmatic access, with DNS A records: API GET /v1/hosts/eaed.be (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/eaed.be.