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.

6 hosts · 261 ms

HostCertsFirst seenLast seen
mibaby.de 6 2025-08-01 2026-08-18
*.mibaby.de 3 2025-08-01 2026-08-04
meeting.mibaby.de 5 2026-05-09 2026-09-07
shop.mibaby.de 10 2026-06-03 2026-09-29
ddns.mibaby.de 5 2026-05-11 2026-09-07
www.mibaby.de 3 2025-08-01 2026-08-18

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