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.

3 hosts · 237 ms

Download CSV
HostCertsFirst seenLast seen
scnd.com 10 2026-05-18 2026-09-14
features.scnd.com 13 2026-04-20 2026-10-14
www.scnd.com 8 2026-05-06 2026-09-01

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