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 · 237 ms

HostCertsFirst seenLast seenDNS
sending.jobrad-holding.de 1 2026-09-14 2026-09-14 ok
risklytics.jobrad-holding.de 11 2026-04-30 2026-09-20 ok
risklytics-test.jobrad-holding.de 7 2026-05-04 2026-09-20 ok

Programmatic access, with DNS A records: API GET /v1/hosts/jobrad-holding.de (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/jobrad-holding.de.