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.

5 hosts · 187 ms

HostCertsFirst seenLast seen
cloud.mail.movistar.es 3 2026-03-25 2026-08-31
image.mail.movistar.es 32 2026-03-25 2026-08-31
click.mail.movistar.es 3 2026-03-25 2026-08-26
link.mail.movistar.es 2 2026-03-07 2026-07-23
view.mail.movistar.es 3 2026-03-25 2026-08-31

Programmatic access: API GET /v1/hosts/mail.movistar.es (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/mail.movistar.es.