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.

8 hosts · 250 ms

HostCertsFirst seenLast seen
redcare-apotheke.ch 2 2025-10-16 2025-12-16
*.redcare-apotheke.ch 1 2025-10-16 2025-10-16
cdn.redcare-apotheke.ch 4 2026-04-15 2026-09-30
info.redcare-apotheke.ch 5 2026-05-09 2026-09-06
img.smtp.redcare-apotheke.ch 16 2026-04-25 2026-08-22
r.smtp.redcare-apotheke.ch 5 2026-04-24 2026-10-01
test.redcare-apotheke.ch 4 2026-06-08 2026-10-06
www.redcare-apotheke.ch 1 2025-12-16 2025-12-16

Programmatic access: API GET /v1/hosts/redcare-apotheke.ch (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/redcare-apotheke.ch.