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.

11 hosts · 275 ms

HostCertsFirst seenLast seenDNS
chateraise.co.jp 1 2025-11-07 2025-11-07 ok
*.chateraise.co.jp 1 2025-11-07 2025-11-07 —
kps10.chateraise.co.jp 3 2026-06-11 2026-08-10 ok
kps20.chateraise.co.jp 3 2026-06-11 2026-08-10 ok
gw1.chateraise.co.jp 2 2026-04-14 2026-04-14 nxdomain
gw2.chateraise.co.jp 2 2026-04-14 2026-04-14 nxdomain
www2.chateraise.co.jp 5 2026-05-20 2026-09-17 ok
*.intra.chateraise.co.jp 5 2026-03-31 2026-09-03 —
address-api.intra.chateraise.co.jp 2 2026-04-02 2026-09-02 ok
recruit.chateraise.co.jp 8 2026-04-12 2026-08-10 ok
gw.chateraise.co.jp 2 2026-04-14 2026-04-14 ok

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