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.

13 hosts · 249 ms

HostCertsFirst seenLast seen
kingsford.com 5 2026-05-14 2026-09-17
*.kingsford.com 6 2026-06-25 2026-10-03
kfd-3225.kingsford.com 5 2026-06-04 2026-10-02
qa.kingsford.com 5 2026-05-22 2026-09-22
brand.kingsford.com 2 2026-03-18 2026-08-18
espanol.kingsford.com 5 2026-05-13 2026-09-10
qa-espanol.kingsford.com 5 2026-05-13 2026-09-10
test-espanol.kingsford.com 5 2026-05-13 2026-09-10
*.em.kingsford.com 2 2025-08-30 2026-07-31
lp.kingsford.com 3 2025-08-01 2026-08-27
www.lp.kingsford.com 2 2025-08-01 2025-08-01
test.kingsford.com 5 2026-05-12 2026-09-13
www.kingsford.com 5 2026-05-15 2026-09-16

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