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.

33 hosts · 337 ms

HostCertsFirst seenLast seenDNS
qa.castorconsent.com 15 2026-04-24 2026-09-27 ok
api.qa.castorconsent.com 15 2026-04-24 2026-09-27 ok
staging.castorconsent.com 10 2026-04-24 2026-08-23 ok
api.staging.castorconsent.com 15 2026-04-24 2026-08-23 ok
mailsg.castorconsent.com 9 2026-04-27 2026-09-25 ok
cvshealth.castorconsent.com 5 2026-04-28 2026-08-26 nxdomain
api.cvshealth.castorconsent.com 5 2026-04-28 2026-08-26 nxdomain
auth.castorconsent.com 10 2026-05-05 2026-09-29 ok
uat.auth.castorconsent.com 5 2026-05-31 2026-09-28 nxdomain
go.castorconsent.com 5 2026-05-11 2026-09-08 ok
api-k8s.castorconsent.com 5 2026-05-19 2026-09-17 nxdomain
dev-k8s.castorconsent.com 5 2026-05-19 2026-09-17 nxdomain
cvsclinicalstudies.k8s.castorconsent.com 4 2026-04-08 2026-08-06 nxdomain
api.cvsclinicalstudies.k8s.castorconsent.com 4 2026-04-08 2026-08-06 nxdomain
us.k8s.castorconsent.com 5 2026-05-31 2026-09-28 nxdomain
api.us.k8s.castorconsent.com 5 2026-06-01 2026-09-29 nxdomain
eu.k8s.castorconsent.com 5 2026-05-29 2026-09-26 nxdomain
api.eu.k8s.castorconsent.com 5 2026-05-28 2026-09-25 nxdomain
cvsclinicalstudies.castorconsent.com 10 2026-04-28 2026-09-25 ok
mailsg.cvsclinicalstudies.castorconsent.com 9 2026-04-28 2026-09-25 ok
api.cvsclinicalstudies.castorconsent.com 10 2026-04-28 2026-09-25 ok
us.castorconsent.com 10 2026-04-28 2026-09-29 ok
api.us.castorconsent.com 10 2026-04-28 2026-09-29 ok
uat.castorconsent.com 10 2026-05-17 2026-09-15 ok
api.uat.castorconsent.com 10 2026-05-17 2026-09-15 ok
pentest.castorconsent.com 10 2026-04-23 2026-09-27 ok
api.pentest.castorconsent.com 10 2026-04-23 2026-09-27 ok
eu.castorconsent.com 10 2026-05-30 2026-10-02 ok
api.eu.castorconsent.com 10 2026-05-30 2026-10-02 ok
dev.castorconsent.com 13 2026-04-11 2026-09-27 ok
api.dev.castorconsent.com 14 2026-04-11 2026-09-27 ok
staging.new.castorconsent.com 10 2026-05-30 2026-09-28 nxdomain
api.staging.new.castorconsent.com 10 2026-05-30 2026-09-28 nxdomain

Programmatic access, with DNS A records: API GET /v1/hosts/castorconsent.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/castorconsent.com.