Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts, first/last seen and live DNS status.

100 hosts (first page) · 1075 ms

HostCertsFirst seenLast seenDNS
clio.com 6 2025-09-26 2026-09-28 ok
dub.clio.com 3 2025-09-15 2026-08-16 ok
ca.dub.clio.com 2 2025-10-24 2026-09-24 ok
staging.dub.clio.com 2 2025-08-19 2026-07-20 ok
spm.dub.clio.com 1 2025-12-04 2025-12-04 ok
au.dub.clio.com 1 2025-11-14 2025-11-14 ok
eu.dub.clio.com 1 2025-11-18 2025-11-18 ok
abc.clio.com 3 2026-06-04 2026-08-11 ok
ebooks.abc.clio.com 3 2026-06-04 2026-08-11 ok
www.abc.clio.com 3 2026-06-04 2026-08-11 ok
americanhistory.abc.clio.com 3 2026-06-04 2026-08-11 ok
www.americanhistory.abc.clio.com 3 2026-06-04 2026-08-11 ok
brand.clio.com 1 2025-11-08 2025-11-08 ok
store.clio.com 16 2026-05-20 2026-09-29 ok
culture.clio.com 2 2026-06-15 2026-08-23 ok
www.culture.clio.com 2 2026-06-15 2026-08-23 ok
landing.clio.com 6 2026-05-08 2026-09-03 ok
staging.clio.com 1 2026-01-01 2026-01-01 ok
clients-staging.clio.com 1 2026-01-01 2026-01-01 ok
salesloft-tracking.clio.com 5 2026-06-01 2026-09-28 ok
billing.clio.com 2 2025-08-24 2026-07-25 ok
staging.billing.clio.com 2 2025-08-22 2026-07-23 ok
accounting.clio.com 2 2025-10-05 2026-09-05 ok
ca.accounting.clio.com 1 2026-05-11 2026-05-11 ok
staging.accounting.clio.com 1 2025-12-28 2025-12-28 ok
status.accounting.clio.com 4 2025-12-02 2026-01-28 ok
*.status.accounting.clio.com 4 2025-12-02 2026-01-28 —
api.clio.com 2 2025-07-15 2026-06-15 ok
ca.api.clio.com 2 2025-07-15 2026-06-15 ok
staging.api.clio.com 1 2025-11-09 2025-11-09 ok
auth.api.clio.com 2 2025-07-08 2026-06-08 ok
ca.auth.api.clio.com 2 2025-07-08 2026-06-08 ok
staging.auth.api.clio.com 2 2025-06-18 2026-05-19 ok
spm.auth.api.clio.com 1 2025-12-18 2025-12-18 ok
au.auth.api.clio.com 2 2025-07-08 2026-06-08 ok
eu.auth.api.clio.com 2 2025-07-08 2026-06-08 ok
spm.api.clio.com 1 2025-12-18 2025-12-18 ok
mcp.api.clio.com 1 2026-09-02 2026-09-02 nodata
staging.mcp.api.clio.com 2 2026-08-25 2026-08-25 nodata
broker-origin.staging.mcp.api.clio.com 2 2026-08-25 2026-08-25 ok
broker-origin.mcp.api.clio.com 1 2026-09-02 2026-09-02 nodata
developers.api.clio.com 2 2025-07-08 2026-06-08 ok
ca.developers.api.clio.com 2 2025-07-08 2026-06-08 ok
staging.developers.api.clio.com 2 2025-06-18 2026-05-19 ok
spm.developers.api.clio.com 1 2025-12-18 2025-12-18 ok
au.developers.api.clio.com 2 2025-07-08 2026-06-08 ok
eu.developers.api.clio.com 2 2025-07-08 2026-06-08 ok
au.api.clio.com 3 2025-07-15 2026-06-15 ok
eu.api.clio.com 2 2025-07-15 2026-06-15 ok
feedback.clio.com 6 2026-05-14 2026-10-01 ok
cancel.clio.com 5 2026-05-05 2026-09-02 ok
m.clio.com 1 2026-01-05 2026-01-05 ok
spm.m.clio.com 3 2025-10-23 2026-09-23 nodata
referralprogram.clio.com 11 2026-05-23 2026-09-18 ok
campaign.clio.com 5 2026-05-01 2026-09-14 ok
staging.docusign.clio.com 2 2025-10-11 2026-09-10 ok
staging-proxy.docusign.clio.com 2 2025-10-11 2026-09-10 nodata
word-addin.clio.com 2 2026-03-30 2026-08-30 ok
staging.word-addin.clio.com 2 2026-03-27 2026-08-27 ok
admin.clio.com 2 2025-08-13 2026-07-14 ok
staging.admin.clio.com 2 2025-07-14 2026-06-14 ok
us.admin.clio.com 2 2025-08-13 2026-07-14 ok
staging.formevo.clio.com 3 2026-04-27 2026-09-27 ok
help.clio.com 5 2026-05-17 2026-09-14 ok
app.clio.com 1 2026-01-05 2026-01-05 ok
ca.app.clio.com 1 2026-01-06 2026-01-06 ok
spm.app.clio.com 3 2025-10-23 2026-09-23 ok
au.app.clio.com 1 2026-01-06 2026-01-06 ok
eu.app.clio.com 1 2026-01-06 2026-01-06 ok
refer.clio.com 10 2026-04-19 2026-08-15 ok
au.refer.clio.com 13 2026-05-19 2026-09-15 ok
eu.refer.clio.com 13 2026-05-19 2026-09-15 ok
developer.clio.com 3 2026-06-02 2026-08-09 ok
labs.clio.com 1 2026-02-09 2026-02-09 ok
marketing.analytics.clio.com 3 2026-04-29 2026-08-15 ok
files.clio.com 5 2026-05-14 2026-09-27 ok
*.staging-us.phones.clio.com 6 2026-09-08 2026-09-17 —
monster-ui-use1.staging-us.phones.clio.com 1 2026-09-02 2026-09-02 ok
questionnaires.clio.com 1 2025-12-03 2025-12-03 ok
ca.questionnaires.clio.com 2 2026-01-14 2026-01-14 ok
staging.questionnaires.clio.com 1 2025-12-03 2025-12-03 ok
au.questionnaires.clio.com 2 2026-04-01 2026-09-01 ok
eu.questionnaires.clio.com 2 2026-03-15 2026-08-15 ok
cms.templates.clio.com 1 2026-07-06 2026-07-06 ok
staging.cms.templates.clio.com 1 2026-07-02 2026-07-02 ok
demand-channels.clio.com 5 2026-05-20 2026-10-03 ok
ca.permissions.clio.com 1 2026-01-01 2026-01-01 ok
staging.permissions.clio.com 1 2026-01-01 2026-01-01 ok
us.permissions.clio.com 1 2026-01-01 2026-01-01 ok
spm.us.permissions.clio.com 1 2026-01-01 2026-01-01 ok
au.permissions.clio.com 1 2026-01-01 2026-01-01 ok
eu.permissions.clio.com 1 2026-01-01 2026-01-01 ok
integrations.clio.com 2 2025-07-08 2026-06-08 ok
ca.integrations.clio.com 2 2025-07-08 2026-06-08 ok
staging.integrations.clio.com 2 2025-06-18 2026-05-19 ok
spm.integrations.clio.com 1 2025-12-18 2025-12-18 nodata
au.integrations.clio.com 2 2025-07-08 2026-06-08 ok
eu.integrations.clio.com 2 2025-07-08 2026-06-08 ok
partners.clio.com 15 2026-05-13 2026-09-20 ok
developers.clio.com 1 2026-01-05 2026-01-05 ok

Showing the first 100 hostnames — sign in with GitHub or Google to page the full list, or use the API with an API key: GET /v1/hosts/clio.com.

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/clio.com.