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.

24 hosts · 192 ms

HostCertsFirst seenLast seen
sara.it 3 2025-09-05 2026-09-09
*.sara.it 8 2025-08-09 2026-09-09
omnia.sara.it 19 2026-05-04 2026-09-10
*.ala.sara.it 4 2025-08-11 2026-07-26
*.sec.sara.it 3 2025-07-07 2026-06-22
*.agenzie.sara.it 1 2025-11-30 2025-11-30
www.formazione.sara.it 2 2025-07-05 2026-06-19
*.sedi.sara.it 1 2026-01-08 2026-01-08
sinistri.sara.it 1 2026-01-25 2026-01-25
www.sinistri.sara.it 1 2026-01-25 2026-01-25
formazione.dipendenti.sara.it 4 2025-08-05 2026-10-05
www.formazione.dipendenti.sara.it 4 2025-08-05 2026-10-05
cloud.email.sara.it 1 2025-11-05 2025-11-05
image.email.sara.it 2 2026-01-06 2026-01-22
click.email.sara.it 1 2025-11-05 2025-11-05
view.email.sara.it 1 2026-01-06 2026-01-06
*.seccoll.sara.it 2 2025-06-19 2026-06-04
*.secoll.sara.it 1 2025-06-16 2025-06-16
*.mondo.sara.it 1 2025-12-12 2025-12-12
realgimm-collaudo.sara.it 2 2026-06-01 2026-06-01
www.preventivo.sara.it 2 2025-09-27 2026-09-10
s.sara.it 6 2026-05-01 2026-08-30
ebds.sara.it 1 2026-04-13 2026-04-13
*.aws.sara.it 8 2026-01-08 2026-10-04

Programmatic access: API GET /v1/hosts/sara.it (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/sara.it.