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.

9 hosts · 255 ms

HostCertsFirst seenLast seen
cursosfemxa.es 1 2026-02-23 2026-02-23
femxa001.cursosfemxa.es 9 2026-05-02 2026-10-01
femxa002.cursosfemxa.es 7 2026-04-24 2026-09-22
php82.cursosfemxa.es 6 2026-04-17 2026-09-13
nova.cursosfemxa.es 5 2026-05-07 2026-09-04
velocidad.cursosfemxa.es 9 2026-05-02 2026-10-01
tracking.cursosfemxa.es 3 2026-05-27 2026-08-11
ftp.cursosfemxa.es 7 2026-04-24 2026-09-22
www.cursosfemxa.es 1 2026-02-23 2026-02-23

Programmatic access: API GET /v1/hosts/cursosfemxa.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/cursosfemxa.es.