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.

25 hosts · 217 ms

HostCertsFirst seenLast seen
gpi.it 1 2025-12-03 2025-12-03
*.gpi.it 1 2025-12-03 2025-12-03
consorziolamma.gpi.it 1 2026-01-14 2026-01-14
*.consorziolamma.gpi.it 1 2026-01-14 2026-01-14
umbria.virtualcare.gpi.it 3 2025-07-07 2026-06-07
testumbriaprod.virtualcare.gpi.it 1 2025-07-02 2025-07-02
fvg.virtualcare.gpi.it 1 2026-02-17 2026-02-17
umbria.dev.virtualcare.gpi.it 2 2026-03-19 2026-08-19
sardegna.dev.virtualcare.gpi.it 2 2026-04-13 2026-09-13
marche.dev.virtualcare.gpi.it 2 2026-04-13 2026-09-13
umbria-cardioline.dev.virtualcare.gpi.it 1 2026-09-23 2026-09-23
sardegna-cardioline.dev.virtualcare.gpi.it 1 2026-09-23 2026-09-23
marche-cardioline.dev.virtualcare.gpi.it 1 2026-09-23 2026-09-23
fvg-cardioline.dev.virtualcare.gpi.it 2 2026-09-23 2026-09-23
fvg.dev.virtualcare.gpi.it 2 2026-04-13 2026-09-13
umbria-priv.dev.virtualcare.gpi.it 1 2026-06-03 2026-06-03
sardegna-priv.dev.virtualcare.gpi.it 1 2026-06-03 2026-06-03
marche-priv.dev.virtualcare.gpi.it 1 2026-06-03 2026-06-03
fvg-priv.dev.virtualcare.gpi.it 1 2026-06-03 2026-06-03
umbria-priv.virtualcare.gpi.it 2 2026-08-28 2026-08-28
training-token-issue.gpi.it 10 2026-06-03 2026-10-08
training-ngh.gpi.it 5 2026-05-14 2026-09-11
pam.gpi.it 1 2026-05-22 2026-05-22
www.pam.gpi.it 1 2026-05-22 2026-05-22
cup.gpi.it 1 2026-01-17 2026-01-17

Programmatic access: API GET /v1/hosts/gpi.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/gpi.it.