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.

70 hosts · 351 ms

HostCertsFirst seenLast seen
kion.io 35 2025-06-12 2026-09-15
*.kion.io 32 2025-06-12 2026-09-15
c7ntest-835962552640.kion.io 3 2026-09-25 2026-09-28
support01.kion.io 1 2026-02-17 2026-02-17
qa1.kion.io 2 2025-07-17 2026-06-17
gcqa1.kion.io 2 2025-07-18 2026-06-17
demo1.kion.io 2 2025-07-23 2026-06-23
data.analytics1.kion.io 3 2026-05-09 2026-08-23
content.analytics1.kion.io 5 2025-07-23 2026-09-02
support02.kion.io 1 2026-02-17 2026-02-17
qa2.kion.io 2 2025-07-17 2026-06-17
egramens-sandbox-ec2.kion.io 2 2025-08-28 2026-07-29
demo2.kion.io 2 2025-07-08 2026-06-08
egramens-sbx2.kion.io 1 2025-08-14 2025-08-14
support03.kion.io 1 2026-02-17 2026-02-17
qa3.kion.io 2 2025-07-16 2026-06-16
demo3.kion.io 2 2025-07-15 2026-06-15
support04.kion.io 1 2026-02-17 2026-02-17
qa4.kion.io 2 2025-07-19 2026-06-19
support05.kion.io 1 2026-02-17 2026-02-17
amsa.kion.io 2 2026-03-16 2026-08-16
gitlab.kion.io 2 2025-09-03 2026-08-04
*.adhoc.kion.io 5 2025-09-19 2026-08-24
sonarqube.kion.io 1 2025-07-27 2025-07-27
license.kion.io 3 2025-07-25 2026-06-29
license-staging.kion.io 2 2025-07-28 2026-06-28
licensing-staging.kion.io 2 2025-07-23 2026-06-23
licensing-alt-staging.kion.io 2 2025-10-05 2026-09-05
licensing.kion.io 4 2025-07-25 2026-06-29
security-testing.kion.io 3 2025-09-17 2026-08-18
portal.kion.io 2 2025-07-20 2026-06-20
kmeportal.kion.io 1 2026-09-29 2026-09-29
litellm.kion.io 1 2026-10-06 2026-10-06
automationstation.kion.io 1 2025-12-18 2025-12-18
hello.kion.io 8 2026-04-23 2026-08-19
demo.kion.io 2 2025-07-23 2026-06-23
itsm-demo.kion.io 1 2026-01-05 2026-01-05
kangaroo.kion.io 2 2025-07-20 2026-06-20
help.kion.io 1 2026-09-01 2026-09-01
workshop.kion.io 1 2026-06-15 2026-06-15
verisma.app.kion.io 1 2026-05-05 2026-05-05
leidosrosc.app.kion.io 1 2025-09-22 2025-09-22
standard.app.kion.io 1 2026-09-29 2026-09-29
amnhealthcare.app.kion.io 1 2025-10-03 2025-10-03
nick.app.kion.io 1 2025-11-13 2025-11-13
kroll.app.kion.io 1 2026-04-09 2026-04-09
alnylam.app.kion.io 1 2026-06-04 2026-06-04
risepoint.app.kion.io 1 2026-02-26 2026-02-26
kme-test.app.kion.io 1 2026-10-01 2026-10-01
kme-test-west.app.kion.io 1 2026-10-06 2026-10-06
sandbox.app.kion.io 3 2026-04-30 2026-09-30
license-dr.kion.io 1 2025-07-25 2025-07-25
pages-failover.kion.io 2 2026-02-28 2026-07-31
git-failover.kion.io 1 2025-07-02 2025-07-02
vault-failover.kion.io 1 2025-07-02 2025-07-02
pages.kion.io 2 2026-02-28 2026-07-31
*.tools.kion.io 1 2025-11-23 2025-11-23
sorry-cypress.kion.io 2 2025-10-29 2026-09-29
insights.kion.io 1 2026-02-05 2026-02-05
contact.kion.io 14 2026-05-04 2026-10-01
git.kion.io 3 2025-07-02 2026-08-04
vault.kion.io 3 2025-07-02 2026-09-29
support.kion.io 5 2026-04-11 2026-09-09
trust.kion.io 6 2026-04-27 2026-08-23
www.kion.io 5 2026-05-02 2026-09-01
mloatman-sandbox.kion.io 2 2026-02-19 2026-07-07
jwebber-sandbox.kion.io 1 2026-09-29 2026-09-29
egramens-sandbox.kion.io 5 2025-08-04 2026-08-29
gkingsbury-sandbox.kion.io 1 2026-09-01 2026-09-01
evansandbox.kion.io 2 2025-08-28 2026-07-29

Programmatic access: API GET /v1/hosts/kion.io (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/kion.io.