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.

5 hosts · 259 ms

HostCertsFirst seenLast seen
kiausacrm.com 2 2026-01-30 2026-06-27
res2.adb.kiausacrm.com 2 2026-03-31 2026-08-31
cloud.email.kiausacrm.com 3 2026-04-13 2026-09-14
image.email.kiausacrm.com 2 2026-04-25 2026-04-25
www.kiausacrm.com 2 2026-01-30 2026-06-27

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