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.

18 hosts · 295 ms

HostCertsFirst seenLast seenDNS
eichie.jp 7 2025-07-28 2026-08-18 ok
*.eichie.jp 6 2025-07-28 2026-08-18 —
dev.eib.eichie.jp 2 2025-08-12 2026-07-13 ok
ejb.eichie.jp 7 2025-12-07 2026-10-06 ok
edge-ejb.eichie.jp 3 2025-10-16 2026-09-16 nodata
*.edge-ejb.eichie.jp 3 2025-10-16 2026-09-16 —
development-ejb.eichie.jp 5 2025-10-14 2026-09-14 ok
*.development-ejb.eichie.jp 5 2025-10-14 2026-09-14 —
*.ejb.eichie.jp 7 2025-12-07 2026-10-06 —
backend.eichie.jp 2 2025-11-01 2026-10-01 ok
stg.backend.eichie.jp 2 2025-08-24 2026-07-24 ok
monitor.backend.eichie.jp 1 2025-11-08 2025-11-08 ok
stg.monitor.backend.eichie.jp 3 2025-09-23 2026-08-23 ok
metabase.eichie.jp 1 2025-12-21 2025-12-21 ok
stg.eichie.jp 3 2025-08-20 2026-07-21 ok
new.eichie.jp 2 2025-11-01 2026-10-01 nxdomain
stg.new.eichie.jp 3 2025-09-19 2026-08-19 nxdomain
legacy.eichie.jp 1 2026-01-03 2026-01-03 nxdomain

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