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.

93 hosts · 373 ms

HostCertsFirst seenLast seen
goodnotes.com 11 2025-07-07 2026-10-05
*.goodnotes.com 14 2026-02-08 2026-10-05
ja.goodnotes.com 14 2026-06-03 2026-06-04
web.goodnotes.com 2 2025-08-20 2025-12-09
www.web.goodnotes.com 2 2025-08-20 2025-12-09
*.api-pd.goodnotes.com 2 2026-04-29 2026-09-29
web.pd.goodnotes.com 2 2026-04-30 2026-05-14
stable-redline.pd.goodnotes.com 1 2026-08-07 2026-08-07
ma-cdn.pd.goodnotes.com 1 2026-07-16 2026-07-16
desktop.pd.goodnotes.com 2 2026-04-30 2026-05-14
latest.pd.goodnotes.com 1 2026-05-14 2026-05-14
nightly.pd.goodnotes.com 1 2026-05-14 2026-05-14
marketplace.goodnotes.com 2 2026-03-16 2026-08-16
*.marketplace.goodnotes.com 2 2026-03-16 2026-08-16
compliance.goodnotes.com 10 2026-05-24 2026-09-20
de.goodnotes.com 22 2026-06-03 2026-10-01
*.redline.goodnotes.com 2 2026-09-22 2026-09-22
share.goodnotes.com 2 2025-08-20 2025-12-09
www.share.goodnotes.com 2 2025-08-20 2025-12-09
web-pre.goodnotes.com 1 2026-01-05 2026-01-05
*.web-pre.goodnotes.com 1 2026-01-05 2026-01-05
classroom-web.web-pre.goodnotes.com 1 2026-01-15 2026-01-15
share-testing-staging.goodnotes.com 7 2025-12-04 2026-09-29
*.share-testing-staging.goodnotes.com 4 2026-04-29 2026-09-29
api.share-testing-staging.goodnotes.com 2 2026-03-19 2026-08-19
www.share-testing-staging.goodnotes.com 3 2025-12-04 2026-02-23
share-testing-new-staging.goodnotes.com 10 2025-12-22 2026-02-16
*.share-testing-new-staging.goodnotes.com 5 2026-01-19 2026-01-20
api.share-testing-new-staging.goodnotes.com 4 2025-12-22 2025-12-29
www.share-testing-new-staging.goodnotes.com 2 2026-01-27 2026-02-16
app.staging.goodnotes.com 2 2026-09-17 2026-09-17
api.us.staging.goodnotes.com 2 2026-09-15 2026-09-15
api.eu.staging.goodnotes.com 1 2026-09-23 2026-09-23
th.goodnotes.com 21 2026-06-03 2026-09-30
ai.goodnotes.com 1 2026-03-08 2026-03-08
*.ai.goodnotes.com 1 2026-03-08 2026-03-08
api.goodnotes.com 3 2026-03-14 2026-08-14
feedback.goodnotes.com 10 2026-05-07 2026-09-03
track.goodnotes.com 7 2026-06-11 2026-08-30
ml.goodnotes.com 1 2026-05-10 2026-05-10
*.ml.goodnotes.com 1 2026-05-10 2026-05-10
classroom.goodnotes.com 4 2026-04-05 2026-09-08
*.classroom.goodnotes.com 4 2026-04-05 2026-09-08
medium.goodnotes.com 3 2025-11-04 2026-10-05
csan.goodnotes.com 1 2026-01-08 2026-01-08
*.csan.goodnotes.com 3 2026-01-08 2026-09-12
*.eks.csan.goodnotes.com 1 2026-01-08 2026-01-08
thumbnail.cdn.goodnotes.com 1 2025-12-16 2025-12-16
artefact.cdn.goodnotes.com 1 2025-12-16 2025-12-16
attachment.cdn.goodnotes.com 1 2025-12-16 2025-12-16
open.goodnotes.com 16 2026-04-12 2026-10-06
org-admin.goodnotes.com 1 2025-12-24 2025-12-24
edu-admin.goodnotes.com 1 2025-12-24 2025-12-24
education.goodnotes.com 4 2026-04-14 2026-08-12
go.goodnotes.com 8 2026-05-08 2026-09-03
creatorstudio.goodnotes.com 1 2026-01-08 2026-01-08
*.creatorstudio.goodnotes.com 1 2026-01-08 2026-01-08
ko.goodnotes.com 5 2026-07-28 2026-09-25
retail-demo.goodnotes.com 1 2025-12-16 2025-12-16
*.retail-demo.goodnotes.com 1 2025-12-16 2025-12-16
p.goodnotes.com 1 2025-11-29 2025-11-29
*.p.goodnotes.com 1 2025-11-29 2025-11-29
jp.goodnotes.com 13 2026-05-06 2026-10-01
app.goodnotes.com 4 2026-04-21 2026-08-19
fr.goodnotes.com 26 2026-06-03 2026-10-01
es.goodnotes.com 6 2026-07-21 2026-09-18
clicks.goodnotes.com 2 2025-07-07 2026-06-07
integrations.goodnotes.com 3 2026-03-26 2026-08-26
*.integrations.goodnotes.com 3 2026-03-26 2026-08-26
kratos.goodnotes.com 3 2026-03-14 2026-08-14
business.goodnotes.com 8 2026-04-15 2026-08-11
insights.goodnotes.com 2 2025-08-27 2026-07-28
*.insights.goodnotes.com 2 2025-08-27 2026-07-28
status.goodnotes.com 4 2026-04-20 2026-08-18
aant.goodnotes.com 1 2025-11-11 2025-11-11
*.aant.goodnotes.com 1 2025-11-11 2025-11-11
us-west-2.aant.goodnotes.com 2 2025-08-26 2025-11-11
*.us-west-2.aant.goodnotes.com 1 2025-11-11 2025-11-11
argo-cd.us-west-2.aant.goodnotes.com 1 2025-08-26 2025-08-26
*.argo-cd.us-west-2.aant.goodnotes.com 1 2025-08-26 2025-08-26
pt.goodnotes.com 5 2026-07-21 2026-09-18
support.goodnotes.com 4 2026-04-14 2026-08-12
export.goodnotes.com 1 2026-06-12 2026-06-12
preview.goodnotes.com 1 2025-11-30 2025-11-30
*.preview.goodnotes.com 1 2025-11-30 2025-11-30
qe-interview.goodnotes.com 1 2025-08-08 2025-08-08
web-new.goodnotes.com 3 2026-03-11 2026-08-11
webflow.goodnotes.com 12 2026-04-14 2026-10-08
share-testing-sandbox.goodnotes.com 18 2025-07-29 2026-09-29
*.share-testing-sandbox.goodnotes.com 4 2026-02-11 2026-09-29
www.share-testing-sandbox.goodnotes.com 14 2025-07-29 2026-02-13
security.goodnotes.com 2 2026-02-27 2026-07-30
*.security.goodnotes.com 2 2026-02-27 2026-07-30

Programmatic access: API GET /v1/hosts/goodnotes.com (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/goodnotes.com.