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.

16 hosts · 249 ms

HostCertsFirst seenLast seen
skuola.net 13 2025-10-16 2026-09-30
*.skuola.net 13 2025-10-16 2026-09-30
*.staging.ricerca.skuola.net 3 2026-06-11 2026-09-11
*.staging.skuola.net 3 2026-06-11 2026-09-11
samsung.skuola.net 10 2026-05-04 2026-08-24
sondaggi.skuola.net 1 2026-09-08 2026-09-08
supporto-ripetizioni.skuola.net 5 2026-05-20 2026-09-17
*.staging.ripetizioni.skuola.net 3 2026-06-11 2026-09-11
nofakebereal.skuola.net 9 2026-04-23 2026-10-08
convienesaperlo.skuola.net 5 2026-05-04 2026-08-23
demo-convienesaperlo.skuola.net 5 2026-04-19 2026-10-03
supporto.skuola.net 7 2026-05-04 2026-09-17
uudbvq.skuola.net 3 2026-05-02 2026-09-17
tr.skuola.net 1 2026-02-16 2026-02-16
*.tr.skuola.net 1 2026-02-16 2026-02-16
schooldays.skuola.net 6 2026-04-19 2026-10-03

Programmatic access: API GET /v1/hosts/skuola.net (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/skuola.net.