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.

5 hosts · 251 ms

HostCertsFirst seenLast seen
snapple.com 13 2025-07-24 2026-09-26
*.snapple.com 12 2026-05-23 2026-09-26
staging.snapple.com 6 2025-07-16 2026-10-02
*.staging.snapple.com 2 2026-06-29 2026-08-22
www.snapple.com 1 2025-07-24 2025-07-24

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