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.

5 hosts · 237 ms

HostCertsFirst seenLast seenDNS
valorfinancial.co.jp 3 2025-10-04 2026-09-04 ok
*.valorfinancial.co.jp 1 2025-12-22 2025-12-22 —
app.valorfinancial.co.jp 3 2025-08-08 2026-08-25 ok
faq.valorfinancial.co.jp 1 2025-10-07 2025-10-07 ok
support.valorfinancial.co.jp 2 2025-09-20 2026-08-21 ok

Programmatic access, with DNS A records: API GET /v1/hosts/valorfinancial.co.jp (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/valorfinancial.co.jp.