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 · 194 ms

HostCertsFirst seenLast seen
winamax.de 5 2025-06-13 2026-08-17
*.winamax.de 5 2025-06-13 2026-08-17
prelive.winamax.de 4 2025-08-22 2026-07-23
*.prelive.winamax.de 4 2025-08-22 2026-07-23
dev.winamax.de 4 2025-06-23 2026-05-26
*.dev.winamax.de 4 2025-06-23 2026-05-26

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