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.

28 hosts · 237 ms

HostCertsFirst seenLast seen
grothe.it 5 2026-04-25 2026-08-23
*.grothe.it 1 2026-05-12 2026-05-12
hub2.grothe.it 5 2026-05-11 2026-09-26
stage2.grothe.it 5 2026-05-11 2026-09-26
*.stage2.grothe.it 5 2026-05-11 2026-09-26
websrv03.grothe.it 4 2026-04-18 2026-08-16
imperia.grothe.it 3 2026-07-30 2026-09-29
hub.grothe.it 7 2026-05-07 2026-09-26
marketplace.grothe.it 5 2026-06-02 2026-09-29
stage.grothe.it 5 2026-05-12 2026-09-26
*.stage.grothe.it 5 2026-05-12 2026-09-26
portal.grothe.it 1 2026-09-02 2026-09-02
control.grothe.it 5 2026-05-15 2026-09-12
cloud.demo.grothe.it 45 2026-07-01 2026-10-08
mail.demo.grothe.it 5 2026-07-01 2026-08-19
vmail.demo.grothe.it 4 2026-07-01 2026-10-06
autodiscover.demo.grothe.it 3 2026-08-19 2026-08-19
cipp.grothe.it 6 2026-03-03 2026-08-26
aces.grothe.it 5 2026-05-28 2026-09-25
webmail.aces.grothe.it 5 2026-05-28 2026-09-25
www.aces.grothe.it 5 2026-05-28 2026-09-25
mta-sts.grothe.it 5 2026-05-16 2026-10-08
news.grothe.it 5 2026-05-18 2026-09-15
cloudprotect.grothe.it 4 2026-04-19 2026-08-16
dev.grothe.it 5 2026-05-11 2026-09-26
*.dev.grothe.it 5 2026-05-11 2026-09-26
www.grothe.it 5 2026-04-25 2026-08-23
datenschutz.grothe.it 2 2025-07-17 2026-06-16

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