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 · 294 ms

HostCertsFirst seenLast seenDNS
dpd.ro 2 2025-08-08 2026-08-25 ok
*.dpd.ro 2 2025-08-08 2026-08-25 —
apps.okd.dpd.ro 1 2026-01-22 2026-01-22 nxdomain
*.apps.okd.dpd.ro 1 2026-01-22 2026-01-22 —

Programmatic access, with DNS A records: API GET /v1/hosts/dpd.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/dpd.ro.