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.

7 hosts · 313 ms

HostCertsFirst seenLast seenDNS
moebel-boss.de 8 2025-08-12 2026-09-25 ok
*.moebel-boss.de 6 2025-08-12 2026-10-05 —
service.moebel-boss.de 5 2026-05-19 2026-09-16 ok
marketing.moebel-boss.de 5 2026-04-26 2026-08-24 ok
servicemail.moebel-boss.de 5 2026-04-26 2026-08-24 ok
registration.moebel-boss.de 5 2026-04-26 2026-08-24 ok
qr.moebel-boss.de 1 2025-12-30 2025-12-30 ok

Programmatic access, with DNS A records: API GET /v1/hosts/moebel-boss.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/moebel-boss.de.