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 · 246 ms

HostCertsFirst seenLast seen
cloud.email.zadig-et-voltaire.com 1 2025-11-06 2025-11-06
image.email.zadig-et-voltaire.com 5 2025-12-29 2026-09-13
click.email.zadig-et-voltaire.com 1 2025-11-05 2025-11-05
view.email.zadig-et-voltaire.com 1 2025-11-07 2025-11-07

Programmatic access: API GET /v1/hosts/email.zadig-et-voltaire.com (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/email.zadig-et-voltaire.com.