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.

4 hosts · 240 ms

HostCertsFirst seenLast seen
platformfunding.com 28 2026-04-17 2026-09-18
*.platformfunding.com 20 2026-04-20 2026-09-18
www.platformfunding.com 8 2026-04-20 2026-08-16
apply.platformfunding.com 6 2026-04-20 2026-08-16

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