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.

4 hosts · 218 ms

HostCertsFirst seenLast seenDNS
form.kanagawabank.co.jp 1 2026-01-16 2026-01-16 ok
loan.kanagawabank.co.jp 2 2026-02-22 2026-07-10 ok
*.loan.kanagawabank.co.jp 2 2026-02-22 2026-07-10 —
www.kanagawabank.co.jp 1 2025-11-05 2025-11-05 ok

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