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.

4 hosts · 208 ms

HostCertsFirst seenLast seenDNS
cloud.em.delhaize.be 1 2026-02-21 2026-02-21 ok
image.em.delhaize.be 3 2026-02-12 2026-09-21 ok
click.em.delhaize.be 1 2026-02-21 2026-02-21 ok
view.em.delhaize.be 1 2026-02-21 2026-02-21 ok

Programmatic access, with DNS A records: API GET /v1/hosts/em.delhaize.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/em.delhaize.be.