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.

15 hosts · 282 ms

Download CSV
HostCertsFirst seenLast seen
kingarthurbaking.com 15 2026-04-30 2026-10-08
*.kingarthurbaking.com 10 2026-04-30 2026-10-08
shopstage.kingarthurbaking.com 6 2026-07-15 2026-09-12
cmsstage.kingarthurbaking.com 5 2026-05-26 2026-09-13
catalog.kingarthurbaking.com 2 2025-08-17 2026-07-18
email.kingarthurbaking.com 16 2026-04-26 2026-08-22
tablespoon.kingarthurbaking.com 3 2026-07-01 2026-08-31
dev.tablespoon.kingarthurbaking.com 5 2026-04-29 2026-08-31
sso.kingarthurbaking.com 2 2025-08-21 2026-08-07
www.sso.kingarthurbaking.com 2 2025-08-21 2026-08-07
sap.kingarthurbaking.com 3 2026-03-25 2026-09-16
*.sap.kingarthurbaking.com 3 2026-03-25 2026-09-16
shop.kingarthurbaking.com 2 2025-09-29 2026-09-29
cmsdev.kingarthurbaking.com 5 2026-05-22 2026-09-19
www.kingarthurbaking.com 3 2026-06-22 2026-09-08

Programmatic access: API GET /v1/hosts/kingarthurbaking.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/kingarthurbaking.com.