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.

42 hosts · 323 ms

HostCertsFirst seenLast seenDNS
sparrowcard.com 31 2026-04-22 2026-09-27 ok
*.sparrowcard.com 12 2026-04-22 2026-09-27 —
nifi-uat-2.sparrowcard.com 12 2026-04-18 2026-08-14 ok
api2.sparrowcard.com 10 2026-05-20 2026-09-15 ok
supersetv2.sparrowcard.com 14 2026-05-31 2026-09-27 ok
jupyterhub.sparrowcard.com 14 2026-04-10 2026-10-05 ok
argocd.sparrowcard.com 11 2026-05-31 2026-09-26 ok
metabase.sparrowcard.com 13 2026-06-02 2026-09-29 ok
nifi.sparrowcard.com 9 2026-05-31 2026-09-26 ok
api.sparrowcard.com 10 2026-05-21 2026-09-17 ok
uat-api.sparrowcard.com 11 2026-06-06 2026-10-02 ok
login.sparrowcard.com 5 2026-04-19 2026-08-15 ok
url5814.application.sparrowcard.com 7 2026-05-27 2026-09-22 ok
akhq.sparrowcard.com 13 2026-05-31 2026-09-27 ok
jenkins.sparrowcard.com 11 2026-05-31 2026-09-26 ok
nifikops.sparrowcard.com 10 2026-04-29 2026-08-25 ok
alerts.sparrowcard.com 15 2026-04-10 2026-10-05 ok
supersetv2-uat.sparrowcard.com 14 2026-05-30 2026-09-26 ok
jupyterhub-uat.sparrowcard.com 11 2026-05-30 2026-09-25 ok
argocd-uat.sparrowcard.com 13 2026-05-30 2026-09-26 ok
metabase-uat.sparrowcard.com 7 2026-05-30 2026-09-25 ok
synapse-uat.sparrowcard.com 9 2026-05-31 2026-09-26 ok
nifi-uat.sparrowcard.com 11 2026-05-30 2026-09-26 ok
api-uat.sparrowcard.com 13 2026-06-01 2026-09-27 ok
temporal-uat.sparrowcard.com 13 2026-05-26 2026-09-22 ok
merlin-uat.sparrowcard.com 11 2026-06-01 2026-09-27 ok
rasa-merlin-uat.sparrowcard.com 6 2026-05-07 2026-09-02 ok
akhq-uat.sparrowcard.com 11 2026-05-31 2026-09-26 ok
merlin-server-uat.sparrowcard.com 8 2026-05-02 2026-08-28 ok
nr-uat.sparrowcard.com 13 2026-05-31 2026-09-26 ok
jenkins-uat.sparrowcard.com 11 2026-05-31 2026-09-26 ok
nifikops-uat.sparrowcard.com 9 2026-04-09 2026-10-03 ok
superset-uat.sparrowcard.com 7 2026-05-30 2026-09-25 ok
vault-uat.sparrowcard.com 13 2026-05-30 2026-09-26 ok
superset.sparrowcard.com 9 2026-06-01 2026-09-27 ok
vault.sparrowcard.com 11 2026-06-01 2026-09-28 ok
tesla-dev.sparrowcard.com 10 2026-05-09 2026-09-05 ok
www.sparrowcard.com 19 2026-05-10 2026-09-26 ok
verify.sparrowcard.com 1 2026-05-15 2026-05-15 ok
apply.sparrowcard.com 9 2026-02-22 2026-09-26 ok
api.apply.sparrowcard.com 1 2025-12-01 2025-12-01 ok
test.apply.sparrowcard.com 1 2026-01-24 2026-01-24 ok

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