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.

2 hosts · 184 ms

HostCertsFirst seenLast seen
zoomgovstatus.com 2 2025-09-20 2025-11-18
www.zoomgovstatus.com 5 2026-05-19 2026-09-15

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