Find every subdomain
of a domain.

Every hostname under a domain that ever appeared in a public TLS certificate — with certificate counts, first/last seen and live DNS status.

8 hosts · 190 ms

HostCertsFirst seenLast seenDNS
sandscap.com 4 2025-08-08 2026-08-31 ok
*.sandscap.com 3 2025-08-08 2026-08-31 —
go.sandscap.com 9 2026-04-19 2026-09-15 ok
intranet.sandscap.com 5 2026-04-23 2026-08-21 ok
content.sandscap.com 4 2026-06-05 2026-10-07 ok
thesandlot.sandscap.com 3 2025-10-30 2026-09-30 ok
api.thesandlot.sandscap.com 5 2025-10-30 2026-09-30 ok
www.sandscap.com 1 2026-06-02 2026-06-02 ok

Programmatic access, with DNS A records: API GET /v1/hosts/sandscap.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/sandscap.com.