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) · 533 ms

HostCertsFirst seenLast seenDNS
joinroot.com 56 2025-07-05 2026-09-17 ok
*.joinroot.com 13 2026-04-23 2026-08-20 —
email2.joinroot.com 4 2025-07-01 2026-06-02 nodata
*.email2.joinroot.com 1 2025-07-01 2025-07-01 —
ablink.email2.joinroot.com 2 2025-07-02 2026-06-02 ok
email3.joinroot.com 4 2025-07-01 2026-06-02 nodata
*.email3.joinroot.com 1 2025-07-01 2025-07-01 —
ablink.email3.joinroot.com 2 2025-07-02 2026-06-02 ok
data.joinroot.com 2 2025-07-16 2026-06-15 ok
data.production-data.joinroot.com 2 2025-06-22 2026-05-22 ok
inc.joinroot.com 2 2026-04-09 2026-09-09 ok
atlantis.cicd.joinroot.com 1 2026-02-16 2026-02-16 ok
bind.joinroot.com 3 2026-04-27 2026-09-27 ok
service.joinroot.com 2 2026-01-26 2026-01-26 nodata
maintenance.joinroot.com 1 2026-01-01 2026-01-01 ok
data-science.joinroot.com 1 2025-07-14 2025-07-14 nodata
guf.py.data-science.joinroot.com 7 2025-07-05 2026-08-04 ok
lambda.guf.py.data-science.joinroot.com 5 2025-07-06 2025-07-14 nxdomain
beta.guf.py.data-science.joinroot.com 2 2025-09-03 2026-08-04 ok
temp.guf.py.data-science.joinroot.com 1 2025-06-26 2025-06-26 nxdomain
dev.guf.py.data-science.joinroot.com 2 2025-09-03 2026-08-04 ok
quote.joinroot.com 2 2025-07-05 2026-06-05 ok
drive.joinroot.com 10 2026-05-11 2026-09-06 ok
eng.joinroot.com 1 2025-06-27 2025-06-27 nxdomain
*.eng.joinroot.com 12 2026-05-13 2026-09-08 —
staging.eng.joinroot.com 1 2026-04-22 2026-04-22 nxdomain
partner-testing.eng.joinroot.com 1 2026-04-13 2026-04-13 nxdomain
deploy-testing.eng.joinroot.com 1 2025-06-30 2025-06-30 nxdomain
staging.joinroot.com 2 2025-07-05 2026-06-05 ok
root-staging.joinroot.com 1 2026-02-18 2026-02-18 ok
*.staging.joinroot.com 10 2026-05-10 2026-09-05 —
data.staging.joinroot.com 2 2025-07-16 2026-06-15 ok
inc.staging.joinroot.com 2 2026-04-09 2026-09-09 ok
bind.staging.joinroot.com 3 2026-04-29 2026-09-29 ok
maintenance.staging.joinroot.com 1 2026-01-05 2026-01-05 ok
quote.staging.joinroot.com 2 2025-07-05 2026-06-05 ok
monitoring.staging.joinroot.com 3 2026-03-25 2026-08-25 nodata
blog.staging.joinroot.com 1 2026-02-16 2026-02-16 ok
safelite-api.staging.joinroot.com 1 2026-01-22 2026-01-22 nodata
iaai-api.staging.joinroot.com 1 2026-02-16 2026-02-16 nodata
user-access-api.staging.joinroot.com 1 2026-06-16 2026-06-16 ok
trip-tracker.api.staging.joinroot.com 1 2026-02-18 2026-02-18 ok
telematics.api.staging.joinroot.com 2 2026-02-20 2026-07-08 ok
legacy-fallback.staging.joinroot.com 2 2025-07-04 2026-06-04 ok
internal.staging.joinroot.com 2 2026-03-26 2026-08-26 ok
fact-set-service-internal.staging.joinroot.com 2 2025-10-26 2026-09-26 ok
admin.staging.joinroot.com 2 2026-02-21 2026-07-09 ok
customerservice.admin.staging.joinroot.com 2 2025-11-20 2026-02-18 ok
pricing.admin.staging.joinroot.com 2 2026-02-19 2026-07-07 ok
market-manager-dash.admin.staging.joinroot.com 1 2026-01-28 2026-01-28 ok
customerservice-internal.admin.staging.joinroot.com 3 2026-03-25 2026-08-25 ok
upm.admin.staging.joinroot.com 1 2026-09-28 2026-09-28 nodata
rating-plan-manager.admin.staging.joinroot.com 2 2026-03-25 2026-08-25 ok
market-manager.admin.staging.joinroot.com 1 2026-02-13 2026-02-13 ok
claims.admin.staging.joinroot.com 2 2026-02-26 2026-07-14 ok
customerservice-test.admin.staging.joinroot.com 1 2025-06-09 2025-06-09 ok
motion-only.admin.staging.joinroot.com 2 2026-02-19 2026-07-07 ok
r.staging.joinroot.com 2 2025-07-05 2026-06-05 ok
vendor.staging.joinroot.com 2 2026-02-20 2026-07-08 ok
lenderservices.staging.joinroot.com 2 2026-02-20 2026-07-08 ok
claims.staging.joinroot.com 2 2025-07-05 2026-06-05 ok
partners.staging.joinroot.com 1 2026-02-13 2026-02-13 nxdomain
renters.staging.joinroot.com 2 2025-07-05 2026-06-05 ok
agents.staging.joinroot.com 2 2026-04-13 2026-09-13 ok
bonus.staging.joinroot.com 2 2025-07-04 2026-06-03 ok
rootbonus.staging.joinroot.com 2 2025-07-04 2026-06-04 ok
www.rootbonus.staging.joinroot.com 2 2025-07-05 2026-06-05 ok
account.staging.joinroot.com 2 2026-04-11 2026-09-11 ok
www.staging.joinroot.com 2 2025-07-07 2026-06-07 ok
platform-eng-api.staging.eng-tooling.joinroot.com 1 2026-04-14 2026-04-14 nxdomain
platform-eng-app.staging.eng-tooling.joinroot.com 1 2026-04-14 2026-04-14 nxdomain
monitoring.joinroot.com 2 2026-03-25 2026-08-25 ok
impact-analysis.admin.staging-rating.joinroot.com 2 2025-08-26 2026-07-26 ok
impact-analysis.admin.production-rating.joinroot.com 2 2025-06-14 2026-05-13 ok
partner-testing.joinroot.com 2 2025-07-04 2026-06-04 ok
*.partner-testing.joinroot.com 10 2026-05-10 2026-09-05 —
inc.partner-testing.joinroot.com 2 2026-04-08 2026-09-08 ok
bind.partner-testing.joinroot.com 3 2026-04-29 2026-09-29 ok
maintenance.partner-testing.joinroot.com 1 2026-01-06 2026-01-06 ok
quote.partner-testing.joinroot.com 2 2025-07-05 2026-06-05 ok
monitoring.partner-testing.joinroot.com 3 2026-03-25 2026-08-25 nodata
blog.partner-testing.joinroot.com 1 2026-02-16 2026-02-16 ok
safelite-api.partner-testing.joinroot.com 1 2026-01-28 2026-01-28 ok
iaai-api.partner-testing.joinroot.com 1 2026-01-07 2026-01-07 ok
user-access-api.partner-testing.joinroot.com 1 2026-06-16 2026-06-16 ok
trip-tracker.api.partner-testing.joinroot.com 2 2026-02-20 2026-07-08 ok
telematics.api.partner-testing.joinroot.com 2 2026-02-21 2026-07-09 ok
legacy-fallback.partner-testing.joinroot.com 2 2025-07-05 2026-06-05 ok
internal.partner-testing.joinroot.com 2 2026-03-26 2026-08-26 ok
fact-set-service-internal.partner-testing.joinroot.com 2 2025-08-09 2026-07-10 ok
admin.partner-testing.joinroot.com 2 2026-02-20 2026-07-08 ok
customerservice.admin.partner-testing.joinroot.com 5 2025-12-02 2026-04-06 ok
pricing.admin.partner-testing.joinroot.com 1 2026-02-18 2026-02-18 ok
market-manager-dash.admin.partner-testing.joinroot.com 1 2026-01-28 2026-01-28 ok
customerservice-internal.admin.partner-testing.joinroot.com 3 2026-03-25 2026-08-25 ok
upm.admin.partner-testing.joinroot.com 1 2026-09-28 2026-09-28 nodata
rating-plan-manager.admin.partner-testing.joinroot.com 2 2026-03-25 2026-08-25 ok
market-manager.admin.partner-testing.joinroot.com 1 2026-02-12 2026-02-12 ok
claims.admin.partner-testing.joinroot.com 2 2026-02-25 2026-07-13 ok
customerservice-test.admin.partner-testing.joinroot.com 3 2025-06-09 2025-12-03 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/joinroot.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/joinroot.com.