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.

15 hosts · 315 ms

HostCertsFirst seenLast seenDNS
cloud-pass.jp 4 2025-10-10 2026-09-11 ok
*.cloud-pass.jp 7 2025-10-10 2026-10-05 —
id.cloud-pass.jp 4 2025-06-27 2026-05-28 ok
*.id.cloud-pass.jp 4 2025-06-27 2026-05-28 —
dleague02.id.cloud-pass.jp 2 2026-06-29 2026-06-29 nxdomain
dleague.id.cloud-pass.jp 2 2026-06-17 2026-06-17 ok
*.dleague.id.cloud-pass.jp 3 2026-06-17 2026-06-17 —
kamaboko.id.cloud-pass.jp 6 2025-07-31 2026-07-01 ok
*.kamaboko.id.cloud-pass.jp 4 2025-07-31 2026-07-01 —
pv.id.cloud-pass.jp 2 2025-06-27 2025-06-27 nodata
*.pv.id.cloud-pass.jp 2 2025-06-27 2025-06-27 —
fujispeedway.id.cloud-pass.jp 4 2026-08-10 2026-08-10 nxdomain
*.fujispeedway.id.cloud-pass.jp 4 2026-08-10 2026-08-10 —
pv.cloud-pass.jp 3 2026-10-05 2026-10-05 ok
pv.new.cloud-pass.jp 3 2026-10-05 2026-10-05 ok

Programmatic access, with DNS A records: API GET /v1/hosts/cloud-pass.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/cloud-pass.jp.