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.

22 hosts · 223 ms

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HostCertsFirst seenLast seen
cantabrialabs.es 2 2026-01-26 2026-02-17
*.cantabrialabs.es 2 2026-01-26 2026-02-17
formacion.farmacia.cantabrialabs.es 2 2026-05-17 2026-05-17
www.formacion.farmacia.cantabrialabs.es 2 2026-05-17 2026-05-17
rutina.cantabrialabs.es 5 2026-05-06 2026-09-03
kb.cantabrialabs.es 1 2026-10-08 2026-10-08
observatorioheliocare.cantabrialabs.es 5 2026-05-04 2026-09-02
kb-staging.cantabrialabs.es 1 2026-10-08 2026-10-08
supplycdm-staging.cantabrialabs.es 1 2026-10-09 2026-10-09
cloud.email.cantabrialabs.es 2 2026-04-03 2026-09-04
image.email.cantabrialabs.es 3 2026-02-03 2026-09-25
click.email.cantabrialabs.es 3 2026-04-03 2026-09-04
view.email.cantabrialabs.es 3 2026-04-03 2026-09-04
aicontrol.cantabrialabs.es 1 2026-09-21 2026-09-21
supplycdm.cantabrialabs.es 1 2026-10-09 2026-10-09
formacion.medico.cantabrialabs.es 1 2026-05-13 2026-05-13
www.formacion.medico.cantabrialabs.es 1 2026-05-13 2026-05-13
cyber.cantabrialabs.es 2 2026-06-11 2026-10-03
core.cyber.cantabrialabs.es 1 2026-09-28 2026-09-28
jobs.cantabrialabs.es 5 2026-05-01 2026-08-28
eventos.cantabrialabs.es 1 2026-01-30 2026-01-30
mta-sts.cantabrialabs.es 1 2026-01-13 2026-01-13

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