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.

37 hosts · 397 ms

HostCertsFirst seenLast seenDNS
castore.com 32 2026-05-09 2026-09-25 ok
*.castore.com 16 2026-05-11 2026-09-25 —
customer-service.castore.com 28 2026-04-09 2026-10-04 ok
de.castore.com 14 2026-05-10 2026-09-05 ok
ie.castore.com 10 2026-04-16 2026-08-12 ok
care.castore.com 3 2025-09-01 2026-08-28 ok
*.care.castore.com 3 2025-09-01 2026-08-28 —
welshfire.castore.com 11 2026-06-16 2026-09-07 ok
garcia.ai.castore.com 1 2026-04-16 2026-04-16 nodata
*.garcia.ai.castore.com 1 2026-04-16 2026-04-16 —
dashboard.garcia.ai.castore.com 4 2026-05-27 2026-08-25 nxdomain
storage.garcia.ai.castore.com 2 2026-08-25 2026-08-25 ok
hitl.garcia.ai.castore.com 2 2026-08-25 2026-08-25 ok
dashboard.uat.garcia.ai.castore.com 11 2026-05-27 2026-09-22 ok
storage.uat.garcia.ai.castore.com 6 2026-04-16 2026-08-12 ok
hitl.uat.garcia.ai.castore.com 8 2026-04-17 2026-08-13 ok
dev.garcia.ai.castore.com 6 2026-05-06 2026-07-04 ok
dashboard.dev.garcia.ai.castore.com 9 2026-05-27 2026-09-23 ok
storage.dev.garcia.ai.castore.com 6 2026-04-23 2026-08-19 ok
hitl.dev.garcia.ai.castore.com 9 2026-05-18 2026-09-13 ok
lookbook.castore.com 9 2026-05-16 2026-09-11 ok
nl.castore.com 14 2026-05-15 2026-09-11 ok
jp.castore.com 15 2026-04-08 2026-10-03 ok
teamwear.castore.com 13 2026-05-13 2026-09-08 ok
preorder.castore.com 11 2026-05-03 2026-08-29 ok
fr.castore.com 24 2026-05-13 2026-09-09 ok
sunrisers-leeds.castore.com 8 2026-07-20 2026-09-21 ok
es.castore.com 12 2026-05-10 2026-09-05 ok
returns.castore.com 4 2026-04-13 2026-08-10 ok
careers.castore.com 14 2026-06-05 2026-09-20 ok
mta-sts.castore.com 1 2025-11-23 2025-11-23 ok
us.castore.com 11 2026-05-08 2026-09-03 ok
account.castore.com 9 2026-07-28 2026-09-25 ok
my-account.castore.com 13 2026-04-16 2026-09-27 ok
au.castore.com 17 2026-06-06 2026-10-02 ok
eu.castore.com 19 2026-05-26 2026-10-01 ok
www.castore.com 18 2026-05-20 2026-10-01 ok

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