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.

6 hosts · 280 ms

HostCertsFirst seenLast seen
clickup-stg.com 4 2025-07-14 2026-06-14
*.clickup-stg.com 9 2025-07-14 2026-09-21
crm.clickup-stg.com 2 2025-07-03 2026-06-03
*.crm.clickup-stg.com 2 2025-07-03 2026-06-03
*.app.clickup-stg.com 5 2025-07-14 2026-06-14
*.preview.clickup-stg.com 1 2026-01-05 2026-01-05

Programmatic access: API GET /v1/hosts/clickup-stg.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/clickup-stg.com.