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.

7 hosts · 244 ms

HostCertsFirst seenLast seenDNS
www.api.b2b.kitakyushubank.chance.co.jp 2 2025-06-09 2026-06-08 ok
www.b2b.kitakyushubank.chance.co.jp 4 2025-07-04 2026-06-02 ok
www.api.inb.kitakyushubank.chance.co.jp 4 2026-04-07 2026-09-07 ok
www.inb.kitakyushubank.chance.co.jp 3 2025-09-08 2026-09-07 ok
digitalreg.kitakyushubank.chance.co.jp 3 2025-07-04 2026-07-29 ok
digital.kitakyushubank.chance.co.jp 2 2026-02-13 2026-02-13 ok
www.apt.kitakyushubank.chance.co.jp 2 2025-09-08 2026-09-07 ok

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