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.

75 hosts · 326 ms

HostCertsFirst seenLast seen
fastbreak.ai 13 2025-07-31 2026-09-26
qa.fastbreak.ai 2 2025-10-22 2025-10-24
*.qa.fastbreak.ai 2 2025-10-22 2025-10-24
*.api.qa.fastbreak.ai 1 2025-10-22 2025-10-22
vpn.qa.fastbreak.ai 1 2025-11-02 2025-11-02
home.employee.fastbreak.ai 5 2026-05-05 2026-09-05
fee-config.employee.fastbreak.ai 3 2026-06-09 2026-08-12
directory.employee.fastbreak.ai 5 2026-04-27 2026-08-29
console.fastbreak.ai 4 2026-08-01 2026-10-03
api.pxi-core.fastbreak.ai 4 2026-06-05 2026-10-07
staging.fastbreak.ai 2 2026-01-19 2026-01-20
*.staging.fastbreak.ai 2 2026-01-19 2026-01-20
*.api.staging.fastbreak.ai 1 2026-01-20 2026-01-20
vpn.staging.fastbreak.ai 1 2026-01-19 2026-01-19
auth.fastbreak.ai 2 2026-10-07 2026-10-07
setup.auth.fastbreak.ai 2 2026-10-07 2026-10-07
api.fastbreak.ai 3 2026-08-19 2026-09-16
router.mobile-pxi.fastbreak.ai 4 2026-06-05 2026-10-07
ref.compliance.internal.fastbreak.ai 2 2026-10-01 2026-10-01
roadmap.internal.fastbreak.ai 3 2026-06-09 2026-08-10
travel.fastbreak.ai 3 2026-07-08 2026-09-09
platform.fastbreak.ai 4 2026-06-04 2026-10-08
cdn.fastbreak.ai 10 2026-04-20 2026-08-16
go.fastbreak.ai 10 2026-05-02 2026-09-29
help.fastbreak.ai 6 2026-04-24 2026-08-20
app.fastbreak.ai 4 2026-03-02 2026-08-25
*.app.fastbreak.ai 4 2026-03-02 2026-08-25
*.api.app.fastbreak.ai 2 2026-03-02 2026-07-18
tickets.app.fastbreak.ai 3 2026-06-08 2026-08-10
control.iq.fastbreak.ai 1 2026-08-01 2026-08-01
northstar.fastbreak.ai 3 2026-06-20 2026-08-23
developer.fastbreak.ai 3 2026-09-16 2026-09-16
*.solver.fastbreak.ai 3 2026-06-26 2026-06-26
*.stage.solver.fastbreak.ai 2 2026-07-22 2026-07-22
jobs.stage.solver.fastbreak.ai 2 2026-08-14 2026-08-14
*.scratch.solver.fastbreak.ai 2 2026-06-25 2026-06-25
jobs.solver.fastbreak.ai 1 2026-07-13 2026-07-13
*.dev.solver.fastbreak.ai 2 2026-06-26 2026-06-26
amateur-admin.dev.solver.fastbreak.ai 1 2026-09-08 2026-09-08
jobs.dev.solver.fastbreak.ai 1 2026-07-02 2026-07-02
postmaster.services.fastbreak.ai 1 2026-09-01 2026-09-01
*.sites.fastbreak.ai 3 2026-06-05 2026-08-06
messaging.routes.fastbreak.ai 3 2026-06-13 2026-08-12
scheduling.routes.fastbreak.ai 3 2026-06-06 2026-08-06
api.routes.fastbreak.ai 1 2026-09-24 2026-09-24
travel.routes.fastbreak.ai 1 2026-09-01 2026-09-01
registration.routes.fastbreak.ai 3 2026-06-07 2026-08-08
editor.routes.fastbreak.ai 3 2026-07-10 2026-09-11
tasks.routes.fastbreak.ai 3 2026-06-05 2026-08-05
communications.routes.fastbreak.ai 1 2026-08-28 2026-08-28
tickets.routes.fastbreak.ai 4 2026-07-15 2026-09-17
checkout.addons.fastbreak.ai 2 2026-08-25 2026-08-25
travel.partners.fastbreak.ai 6 2026-05-30 2026-10-02
tickets.fastbreak.ai 5 2026-04-23 2026-08-25
payments.fastbreak.ai 5 2026-04-24 2026-08-26
events.fastbreak.ai 3 2026-06-07 2026-08-07
status.fastbreak.ai 1 2026-09-29 2026-09-29
impact.fastbreak.ai 3 2026-06-23 2026-08-26
support.fastbreak.ai 13 2026-04-29 2026-09-16
checkout.fastbreak.ai 3 2026-06-09 2026-08-10
dev.fastbreak.ai 3 2026-01-25 2026-07-16
*.dev.fastbreak.ai 3 2026-01-25 2026-07-16
*.api.dev.fastbreak.ai 1 2026-01-25 2026-01-25
llm.dev.fastbreak.ai 2 2026-05-20 2026-05-20
na.api.perform.dev.fastbreak.ai 4 2025-08-05 2026-07-06
*.na.api.perform.dev.fastbreak.ai 4 2025-08-05 2026-07-06
vpn.dev.fastbreak.ai 3 2025-09-11 2026-08-12
tools.dev.fastbreak.ai 6 2026-05-31 2026-10-03
trueview.fastbreak.ai 8 2026-05-06 2026-09-02
demo.trueview.fastbreak.ai 1 2026-07-13 2026-07-13
www.fastbreak.ai 14 2025-07-31 2026-09-25
case-study.fastbreak.ai 8 2026-04-24 2026-08-20
api.snapentry.fastbreak.ai 6 2026-05-18 2026-09-20
router.snapentry.fastbreak.ai 5 2026-05-02 2026-09-06
identity.fastbreak.ai 4 2026-05-01 2026-09-02

Programmatic access: API GET /v1/hosts/fastbreak.ai (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/fastbreak.ai.