Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts and first/last seen dates.

9 hosts · 227 ms

HostCertsFirst seenLast seen
lunyone.de 4 2026-06-06 2026-10-04
*.lunyone.de 4 2026-06-06 2026-10-04
long.lunyone.de 4 2026-04-17 2026-08-14
*.long.lunyone.de 4 2026-04-17 2026-08-14
link.lunyone.de 5 2026-04-26 2026-09-11
design.lunyone.de 12 2026-04-27 2026-08-24
www.design.lunyone.de 8 2026-04-26 2026-08-22
short.lunyone.de 5 2026-04-17 2026-10-13
*.short.lunyone.de 5 2026-04-17 2026-10-13

Programmatic access: API GET /v1/hosts/lunyone.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/lunyone.de.