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.

15 hosts · 170 ms

HostCertsFirst seenLast seen
immobiliare.it 3 2025-10-30 2026-10-07
*.immobiliare.it 3 2025-10-30 2026-10-07
firma-elettronica.immobiliare.it 5 2026-04-30 2026-08-28
t.informa.immobiliare.it 5 2026-06-02 2026-08-01
sitiweb.immobiliare.it 5 2026-05-01 2026-08-29
aste.immobiliare.it 1 2025-11-05 2025-11-05
www.aste.immobiliare.it 1 2025-11-05 2025-11-05
report-staging.immobiliare.it 2 2026-03-02 2026-09-25
mutui.immobiliare.it 3 2026-04-29 2026-08-11
international.immobiliare.it 13 2026-05-16 2026-09-26
youdomus.immobiliare.it 3 2026-02-23 2026-10-08
report.immobiliare.it 3 2026-03-18 2026-09-29
youdomus-test.immobiliare.it 2 2026-02-26 2026-06-19
cgapigw.immobiliare.it 3 2026-05-01 2026-08-16
academy.immobiliare.it 3 2026-05-20 2026-09-04

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