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.

4 hosts · 199 ms

Download CSV
HostCertsFirst seenLast seen
cloud.newsletter.nivea.de 1 2025-11-07 2025-11-07
image.newsletter.nivea.de 3 2026-01-22 2026-08-31
click.newsletter.nivea.de 1 2025-11-05 2025-11-05
view.newsletter.nivea.de 1 2025-11-06 2025-11-06

Programmatic access: API GET /v1/hosts/newsletter.nivea.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/newsletter.nivea.de.