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.

27 hosts · 273 ms

HostCertsFirst seenLast seen
trustitalia.it 26 2025-09-30 2026-10-05
*.trustitalia.it 14 2026-01-14 2026-09-29
test2.trustitalia.it 2 2026-09-03 2026-09-22
luca.trustitalia.it 8 2026-03-09 2026-04-17
www.luca.trustitalia.it 6 2026-04-14 2026-04-14
giulia.trustitalia.it 3 2026-04-17 2026-04-24
testdurata.trustitalia.it 1 2026-10-02 2026-10-02
www.testdurata.trustitalia.it 1 2026-10-02 2026-10-02
c9800-lab.trustitalia.it 7 2026-10-06 2026-10-07
customfield.trustitalia.it 4 2026-05-27 2026-06-12
www.customfield.trustitalia.it 1 2026-05-27 2026-05-27
artemide.trustitalia.it 15 2026-06-12 2026-10-05
portale.trustitalia.it 16 2025-07-23 2026-09-21
caronte.trustitalia.it 26 2025-07-16 2026-09-29
notte.trustitalia.it 7 2025-09-10 2026-10-05
webmail.trustitalia.it 9 2025-09-10 2026-10-05
proxy.zmail.trustitalia.it 6 2026-08-26 2026-08-27
www.proxy.zmail.trustitalia.it 2 2026-08-26 2026-08-26
testchain.trustitalia.it 2 2026-06-12 2026-06-12
efesto.trustitalia.it 17 2026-03-25 2026-10-07
webreq.trustitalia.it 1 2026-04-08 2026-04-08
test.trustitalia.it 3 2026-07-07 2026-09-22
win2022-test.trustitalia.it 1 2026-06-11 2026-06-11
ubuntu-test.trustitalia.it 13 2025-12-05 2026-03-05
www.ubuntu-test.trustitalia.it 14 2025-12-05 2026-03-05
ev.trustitalia.it 1 2026-07-01 2026-07-01
www.trustitalia.it 25 2025-09-30 2026-10-05

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