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 · 215 ms

HostCertsFirst seenLast seen
revotech.com 13 2025-08-26 2026-09-23
*.revotech.com 15 2025-08-26 2026-09-23
cdn.revotech.com 3 2025-10-22 2026-09-22
grow.revotech.com 1 2025-09-08 2025-09-08

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