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
dhlparcel.be 21 2026-04-23 2026-09-15 ok
*.dhlparcel.be 21 2026-04-23 2026-09-15 —
mx2.dhlparcel.be 1 2026-01-17 2026-01-17 ok

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