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.

8 hosts · 237 ms

HostCertsFirst seenLast seen
topshelfgolf.com 15 2026-04-23 2026-09-28
*.topshelfgolf.com 10 2026-04-23 2026-09-09
vdangi.topshelfgolf.com 3 2026-05-07 2026-10-02
ops.topshelfgolf.com 2 2026-05-22 2026-05-22
products.topshelfgolf.com 5 2026-04-30 2026-09-13
t.topshelfgolf.com 10 2026-04-30 2026-09-18
account.topshelfgolf.com 17 2026-05-31 2026-10-09
sim-quiz.topshelfgolf.com 8 2026-05-04 2026-07-19

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