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.

3 hosts · 302 ms

HostCertsFirst seenLast seen
m.edm.uniqlo.tw 2 2025-09-03 2026-08-04
res.edm.uniqlo.tw 2 2025-09-03 2026-08-04
t.edm.uniqlo.tw 2 2025-09-03 2026-08-04

Programmatic access: API GET /v1/hosts/uniqlo.tw (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/uniqlo.tw.