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.

3 hosts · 289 ms

HostCertsFirst seenLast seenDNS
okiwine.jp 22 2025-08-12 2026-10-02 ok
*.okiwine.jp 14 2026-05-11 2026-09-06 —
www.okiwine.jp 6 2026-06-03 2026-10-02 ok

Programmatic access, with DNS A records: API GET /v1/hosts/okiwine.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/okiwine.jp.